Constant Spring Support Assemblies for an LNG Plant in Central Africa

PT&P Designed and Fabricated Constant Spring Support Assemblies for an LNG Plant in Central Africa.

Type: Constant Spring Supports
Material: A36 Carbon Steel w/ HDG Finish
Design: 1,790 lb. Load | 8″ Vertical
Testing: Load and Travel Tests

These constant spring supports were modified to increase their installed height. The constants range in size from 20.5″ in height 38.75″ in length, and 13″ in width. They’re designed for up to 1790 lb. load and a vertical movement range of 8″. All constants were fabricated from A-36 carbon steel and hot-dipped galvanized. Each assembly went through standard load and travel testing per MSS Standards. The constants were shipped within 6 to 8 weeks to a Liquefied Natural Gas (LNG) plant in Africa.

LNG is natural gas cooled down until it reaches a liquid state. In its liquid state, natural gas is easier to transport by large ships when pipelines are not feasible. Over the years, we have supplied insulated and spring hanger supports to gasification and degasification plants. Our long history in the arena has helped us become the vendor of choice by offering the full scope of our services from testing, engineering & design, manufacturing, and Field Service.

For this application, our constants were designed and manufactured with carbon steel; however, depending on application requirements, such as a furnace, we can also provide constant spring supports utilizing stainless steel material, which accommodates high temperatures and corrosive environments. We created the world’s smallest constant spring support. Our nano constant is ideal for such applications:

Constant Spring Supports

The applications for constant spring supports range in industry verticals we have built and designed for. In addition to LNG clients, we have designed and built constants for refineries, geothermal plants, petrochemical plants, and renewable energy facilities. The use applications include coker replacement, debottlenecking of the furnace, installation of a new VDU (vacuum distillation unit) heater, tube and heater replacement, and flare gas recovery units. Constant spring supports alongside our portfolio of products are shipped worldwide from our Houston, Texas headquarters, where all our products are manufactured. We are open for plant tours. If you are interested, please let us know so we can schedule some time with your team.



Pig Launchers and Receivers Designed for a Crude Export Pipeline

Pig Launchers and Receivers Designed for a Crude Export Pipeline

Sweco Fab., Inc. designed and fabricated pig (pipeline intervention gadget) launchers and receivers with closures for a crude export pipeline in Mexico. Pig Launchers and receivers are pressure-containing vessels or sections of piping within a pipeline system that are utilized for pipeline maintenance, cleaning, and inline inspection for upstream, downstream, and midstream operations. The design of the launcher and receiver depends on the pig and pipeline design conditions. Crude oil, wet gas, dry gas, and product lines are typically cleaned with pipeline pigs monthly or semi-annually.

These units were custom-designed per ASME CODE B31.3 and weighed 2,400 lb. They are 120″ in length and have 12″ dia. minor barrels and 18″ dia. major barrels. The barrels are fabricated from API 5L Gr. B pipe, the flanges from SA105, and the closures are manufactured from carbon steel. The launchers are designed for operating temperatures ranging from -20°F to 212°F at 943 psig. They were radiography-tested and hydro-tested on-site at our manufacturing facility at 1,415 psig for two hours.


A-Type Variable Spring Supports for a Process Power Plant in Oklahoma

A-Type Variable Spring Supports for a Process Power Plant in Oklahoma

Type: Variable Spring Supports
Size: Rod Diameter 2” / Casing 8′ long & 3 1/8” Diameter
Material: Carbon Steel
Design: Operating Load 31,563 lbs., Installed Load 29,000 lbs., 0.82″ Downward Movement
Testing: Standard Load & Travel Tests

PT&P designed two standard PTP-4 size 210 A-type variable spring supports for a process power plant in Oklahoma. The springs are fabricated from A36 carbon steel with a hot-dipped galvanized finish. The springs are designed to accommodate a hydro test load of 34,000 lbs. with an operating load of 31,563 lbs. and an installed load of 29,000 lbs., with the movement of 0.82″ downward. Standard load and travel tests were conducted on the variables before shipment. The specially designed springs utilize a rod diameter of 2″ and the spring casing 8′ long and 3 1/8″ in diameter.

In addition to the products we offer, we also have an experienced field service team. Over 80% of the field service we do is for engineered supports, including constant and spring supports. Inspecting pipe supports in high-energy piping systems such as refineries, chemical plants, and power plants is critical for ensuring safety and reliability. Neglecting these inspections can lead to major consequences detailed below:

  • Structural Failures: Over time, pipe supports can weaken due to corrosion, vibration, or other factors. Without inspection, undetected defects can result in the failure of these supports, causing pipes to sag, bend, or even rupture. This can lead to catastrophic accidents and expensive repairs.
  • Leakage: When pipe supports degrade, they may cause pipes to shift or disconnect, leading to leaks at flange connections and other types of connections in high-pressure systems caused by pipe strain. These leaks can release hazardous substances, causing environmental damage, health risks, and operational disruptions.
  • Reduced System Efficiency: Improperly supported pipes can experience increased friction, causing higher energy consumption to maintain the desired flow rates. This inefficiency can result in increased operational costs and decreased overall system performance.
  • Loss of Containment: In high-energy piping systems, failure to inspect supports can compromise containment integrity. A pipe rupture or leak called a “failure in the pressure-containing boundary,” can release hazardous materials, posing serious risks to personnel, nearby communities, and the environment.
  • Regulatory Non-Compliance: Many industries are subject to regulations and standards governing the inspection and maintenance of high-energy piping systems, including ASME B31.1 and 31.3 and API570. The implications of non-compliance can result in legal consequences and fines.
  • Increased Maintenance Costs:With regular inspections, minor issues can be managed so they do not escalate into costly and timely major problems such as extensive repairs or complete system replacement.
  • Loss of Productivity:Unexpected failures and repairs can disrupt production schedules and lead to unplanned downtime, causing financial losses and impacting the company’s reputation.

Correct installation and regular inspections are essential to mitigate risks and ensure industrial facilities’ safe and efficient operation. We have a team of engineers and technicians who are qualified to inspect pipe supports and expansion joints and can assist with diagnosing problems, replacement, and identifying models, types, and sizes. We provide field service to our clients for all product categories we manufacture, even if we are not the OEM because serving our clients is our first priority.


Clamped Pipe Shoes Custom-Designed for an Offshore Vessel Project

Clamped Pipe Shoes Custom-Designed for an Offshore Vessel Project

These special clamped pipe shoes with isolators were supplied for an offshore vessel project. Offshore renewable energy companies are exploring the viability of developing an offshore charging facility for electrified vessels and using ammonia-powered or hydrogen-powered fuel cells to power marine vessels. As the world’s only major Expansion Joints and Engineered Pipe Supports manufacturer, we are uniquely positioned to service various piping needs. The 210 pipe shoes were fabricated from carbon steel for pipe sizes ranging from 1″ to 24″ in diameter. They are supplied with a hot-dipped galvanized finish for corrosion resistance and range in length from 8″ to 16″ with 4″ from the BOP. These pipe shoes include a dampening isolator in between the pipe and the shoe to reduce vibration and noise. The isolator pad is typically made of a “rubber bonded cork elastomeric” which can be designed to suit the application for temperature and other system needs as specified.

1,485 supports were supplied for this order, including these pipe shoes. At Piping Technology and Products, we supply products to facilities that are helping to reduce carbon emissions and dependence on fossil fuels.


Custom-Designed Hot Shoes

Hot Shoe Custom Designed for a 16-inch pipeline for a mining facility in the Caribbean

Type: Pre-Insulated Pipe Supports “Hot Shoes”
Size: 18″ Length | 16″ Dia. | 4″ Insulation
Material: A240 Gr. 304 L Stainless Steel | Firetemp®
Design: 25,000 lb. – 50,000 Load
Testing: Standard Q.C. Inspections

Piping Technology & Products, Inc. designed and manufactured pre-insulated pipe supports for a high-temperature pipeline for a gold mine. Our subsidiary, Pipe Shields, created this category and family of products.

The “hot shoes” are 16″ in diameter, including 4″ of insulation, and are 18″ in length. They are fabricated from A240 Gr 304 L stainless steel and high-density calcium silicate insulation. The insulation material is noncombustible and can be supplied in varying densities to accommodate different loading applications. This type of insulated support is also utilized in lithium battery plants, automotive manufacturing, data centers, semiconductor manufacturing facilities, sports stadiums, hospitals, and other facilities where there are high-temperature pipelines. In many cases, these lines are for chilled water, hot water, and HVAC systems. These hot shoes are custom designed to support loads from 25,000 lb. to 50,000 lb. at an operating temperature of 1,400°F. Standard tests were performed for a three-week rush job.

For this particular project, we provided a larger scope of material in addition to the pre-insulated supports shown here. We worked with the pipe module fabricator and the EPC for the same project. The scope of material and services included engineering services, insulated supports, pipe hanger hardware, clamps, rods, guides, anchors, structural bolts, nuts, and washers. The project dates back to 2010; however, this mine has last year undergone a plant expansion and mine life extension project designed to increase throughput and allow the operation to maintain a minimum annual gold production of approximately 800,000oz until 2040.

We regularly support customers for the life of their facilities, sometimes over 40 years. We see every customer relationship as long-term and strategic so we can be part of their continued success.


Cryogenic Pipe Saddles with Micarta® Insulation for LNG Service

Insulated Pipe Supports for Low Temperatures

PT&P manufactured cryogenic pipe saddles for LNG transportation pipelines. These types of insulated supports have been utilized in LNG plants around the world. Insulated supports are also used on cold piping in semiconductor plants or plants that make batteries to eliminate condensation.

Cryogenic Pipe Saddles with Micarta® G-10 Insulation for LNG Service

A cold shoe is a pipe support used for cryogenic applications where the transfer of cold temps from the pipeline to the surrounding steel pipe rack is not desirable. These supports can be used for temperatures down to -320° Fahrenheit.  This particular type of insulated pipe saddle assembly was fabricated with a carbon steel base plate, 304L stainless steel saddle, and an insulation block. The overall size ranges from 25” x 19” x 12-¾” to 29” x 25” x 13-3/8”. These pipe shoes were manufactured to support pipe sizes ranging in diameter from 36″ to 42″ NPS.

For additional information about Insulated Pipe Supports go to our product page.

Cryogenic Pipe Saddles Made for LNG Project

For this job, our client was a new entrant into the LNG engineering and design market space, and this was one of their capstone projects internally and for the marketplace.  Given PTP’s long history and experience concerning LNG pipe supports, we served as strategic partners in the engagement.  We identified that the client was using a pre-existing standard that underestimated the amount of Micarta® insulation thickness needed to provide adequate insulation for the facility.

PT&P engineers recognized that the insulation was not sufficient, and we tested the existing design using a test fixture we developed to demonstrate our concern.  PT&P utilized thermal scanning (infrared technology) to measure temperature at various locations around the insulated pipe support. As a result of our tests, our client corrected the concern, saving dollars, man hours, and scheduled project completion.

pipe support thermal scanning image
pipe support on test

Our work with facilities such as these are a great example of our commitment to providing clean, affordable energy to the world.

To find additional information about our Cryogenic Pipe Saddles visit our product page.



Cross Reference – The Other Companies

Piping Technology & Product, Inc. and our subsidiaries offer a wide range of innovative alternatives to other pipe support products. We can design products less expensive and more efficient than offered by our competitors.

Our team is equipped with in-depth knowledge and expertise to provide you with tailored solutions.

If you need to replace any products which were designed or manufactured by the companies below, contact us today so we can discuss your pipe support needs.


  • Aaa & Technologies & Specialties Co
  • Aaa Supports
  • Adsco
  • Advanced Piping
  • Aislantes Minerales
  • Alberta Pipe Support & Fabrication
  • Alloy Bellows
  • Amber Booth Co
  • American Boa Inc
  • Anup
  • Anvil Intl
  • Bachmann Dampjoint
  • Bachmann Industries,Inc
  • Badger Expansion Joints
  • Basic Psa
  • Belllows Mfg & Research
  • Bellows Systems Inc
  • Bergen Pipe Supports
  • Bergen Pipe Supports Inc
  • Bergen Power Pipe Supports, Inc./Fr
  • Bergmann
  • Bergmann Associates
  • Binder
  • Binder Group
  • Boa
  • Boa Inc
  • Brown Industrial Sales
  • Burgmann
  • Burgmann India
  • Burgmann Mexico
  • Burgmann Middle East
  • Carpenter & Paterson
  • Carpenter & Paterson Ltd
  • Cheong Kee Engineering Works
  • Colonial Associates
  • Cts Industrial
  • Cts Industries Ltd
  • Cts Industries/Unistrut Alberta
  • Delata Machine & Ironworks Llc
  • Duraflex Inc
  • Eagle Burgmann Industries
  • Eagleburgmann
  • Eagleburgmann Ejs Expansion Joint S
  • Eagleburgmann Malaysia S/B
  • Effox
  • Egyptian Maritime Services & Tradin
  • Expansion Joint Systems
  • Expansion Joint Systems Asia Pacific Pty Ltd
  • Fabreeka International
  • Flex Hose Co
  • Flexatherm
  • Flexible Hose Solutions
  • Flexible Metal
  • Flexible Metal Hose Co
  • Flexican Bellows & Hoses P Ltd
  • Flexican Bellows And Hoses Pvt Ltd
  • Flexicraft Industries
  • Flexider
  • Flexider Usa
  • Flexonics
  • Flextech
  • Flextech Engineering Inc
  • Fluorocarbon
  • Grinnell Corporation
  • Grinnell Fire
  • Grinnell Flow Control
  • Hose Master
  • Hyspan
  • Independent Hose
  • Independent Hose & Expjts
  • Inno Flex Tech Eq
  • Inoflex
  • Ke Burgmann
  • Ke Burgmann Singapore Pl
  • Ke Burgmann Usa
  • Kompaflex-Dmm Sro
  • Lisega
  • Lisega Ag
  • Lisega Inc.
  • Lisega Sarl
  • Lonestar
  • Lonestar Industries
  • Madden Bolt Corp
  • Mason
  • Metallic Bellows
  • Metallicbellows
  • Metraflex
  • Microflex
  • Miller Fittings
  • Nhk Spring Co Ltd
  • Nibco
  • Oak Ridge Bellows
  • Pathway
  • Pathway Bellows
  • Pathway Bellows Co
  • Pipe Supports Inc
  • Pipe Supports India P Ltd
  • Pipe Supports Usa Inc
  • Piping Solutions
  • Piping Solutions Inc
  • Power Piping Co
  • Precision Bellows Manufacture
  • Proco Products
  • Purchasing
  • Radcoflex
  • Radcoflex India Pvt Ltd
  • Radcoflex Singapore Pte Ltd
  • Radcoflex Singapore Pte Ltd
  • Resistoflex Pvt Ltd
  • Rilco
  • Rpp Pipe Supports & Bellows
  • Senior Aerospace
  • Senior Aerospace (Ssp)
  • Senior Flexonics Hose Division
  • Senior Flexonics Bartlett
  • Senior Flexonics Inc
  • Senior Flexonics, Pathway
  • Sr Flexonics Inc
  • Teddington
  • Tozen
  • Tozen Vietnam
  • Unaflex
  • Unaflex Rubber Corp
  • Wahlco Metroflex
  • Wahlcome Trofle
  • Wahlcometroflex Inc
  • Witzenmann

Discover the comprehensive Cross Reference guide, showcasing products that PT&P can effectively replace. Compare PT&P offerings with others in this guide to make informed decisions.
When it comes to Engineered Pipe Supports and Expansion Joints, PT&P stands out as the premier global manufacturer in the industry. With a stellar reputation and a commitment to excellence, PT&P offers a wide range of top-notch products that have been trusted by numerous companies worldwide. Let’s take a closer look at how PT&P products compare to those offered by other companies in the market. In a competitive landscape, PT&P shines as the go-to solution for pipe supports, expansion joints, shock control devices, and more. While there are other companies operating in this space, none match the expertise, quality, and reliability that PT&P consistently delivers. By choosing PT&P products, customers can rest assured that they are investing in solutions that have been refined through extensive knowledge and experience gained from solving problems in almost every major EPC, Petrochem, Chemical, and Power company.

PT&P’s extensive product portfolio covers a wide range of applications and specifications, ensuring that customers can find the perfect fit for their unique requirements. Whether it’s supporting complex piping systems in petrochemical plants, ensuring optimal performance in power generation facilities, or addressing challenges in EPC projects, PT&P has the expertise and solutions to meet and exceed expectations. Not only does PT&P offer superior products, but the company also places a strong emphasis on customer satisfaction. Their team of experts works closely with clients to understand their specific needs and provide tailored solutions that optimize performance, efficiency, and safety. With a customer-centric approach, PT&P goes above and beyond to ensure that each project is executed flawlessly, resulting in long-term partnerships built on trust and mutual success.

Furthermore, PT&P’s commitment to innovation and continuous improvement sets them apart from the competition. By staying at the forefront of industry advancements and utilizing cutting-edge technologies, PT&P consistently introduces new and enhanced products that address the evolving needs of its customers. This dedication to innovation ensures that PT&P remains the preferred choice for companies seeking the highest-quality pipe supports and expansion joints on the market.

In summary, PT&P stands as the unparalleled leader in the global market for Engineered Pipe Supports and Expansion Joints. With an extensive product range, a track record of solving complex problems, a customer-centric approach, and a commitment to innovation, PT&P outshines other companies in the industry. When it comes to ensuring the success and reliability of piping systems in major EPC, Petrochem, Chemical, and Power companies, PT&P is the name that customers trust and rely on.

Custom Sway Braces Designed for Coker Units


Sway Braces Custom Designed for Coker Units at an Oil Refinery in the Virgin Islands


Type: Custom Sway Braces with Ball Joints
Material: A36 Carbon Steel | Hot-dipped Galvanized
Testing: Standard Load Testing & Q.C. Inspection

PT&P custom-designed sway braces on an urgent basis to replace existing sway braces at one of the ten largest oil refineries in the world initially built over 75 years ago. These sway braces will be used in Coker units that have long displacements. They are fabricated with “ball joints” at both ends due to the “banana effect,” where the Coker unit will actually bend due to the heating of one side of the Coker unit faster than the opposite side. The casing, pipe, coils, threaded rods, turnbuckle, ball joints, etc., are all fabricated from carbon steel with a hot-dipped galvanized finish.

The maximum loads, spring rates and movements for the sway braces are as follows:

Max Load (lb) Spring Rate (lb/in) Max Movement (+ / – in)
2475 90 10″
3800 267 3-3/4″
3480 120 9″
2500 200 2″

Learn more about our sway brace products and place an order with us today!


F-Type Variable Springs with Rollers


F-Type Variable Spring Support & Pipe Roller Assemblies Designed for a Fabrication Company in Texas

Type: Variable Springs w/ Rollers
Size: Springs: 11.1/16″ H | Rollers: 24″ -36″ Dia.
Design: 700-15,970 lb. Loads | 650°F Temp.
Material: HDG Carbon Steel | Cast-iron
Testing: Standard Load Testing & Q.C. Inspection

Variables use coiled springs to support a load and allow movement. The resistance of the coil to a load changes during compression, which is why these devices are called “variables”. We offer a variety of different designs of variable spring pipe supports. View Variable Spring Supports Product Section.
For this application, the variable spring with rollers were used in natural gas compressor stations in Texas. Compressor stations are an essential part of a natural gas pipeline that moves natural gas from one location to another. At these stations, natural gas is re-pressurized and sent back into the pipeline system where it travels until the next compressor station. The location and distance between compressor stations is dependent on terrain, and the number of gas wells in the vicinity. Frequent elevation changes and a greater number of gas wells will require more compressor stations.
The compressor station, also called a pumping station, is the “engine” that powers a long-distance natural gas pipeline. As the name implies, the station compresses the gas (increasing its pressure) thereby providing energy to move it through the pipeline. The compressor is driven by a motor fueled by some of the natural gas bled from the pipeline. The size of the station and the number of compressors (pumps) varies, based on the diameter of the pipe and the volume of gas to be moved.
Piping Technology and Products and its subsidiaries provide products and services to this critical piece of the energy infrastructure with not only variable spring supports with rollers showcased here, but also with insulated supports, expansion joints, pipe shoes, guides, and anchors.



U-Type Constants Designed with Slide Plates for a Polypropylene Plant in Texas


PT&P designed and fabricated a U-Type constant spring support , with PTFE and a 25% glass-filled side plate for a Polypropylene Plant in Texas. The constant is fabricated from carbon steel and hot-dipped galvanized for extra protection against corrosion. The vertical movement is 1.5" total upward travel and is capable of supporting a load of 10,350 lbs. throughout its range of movement. The constant underwent standard load testing prior to shipment.

Along with chemical plants, constant spring supports are utilized in refineries, power plants, and heat recovery steam generators (HRSG). The design of the constant spring support replaced a system of pipe support called a "counterweight" design still used in some facilities today. The counter-weight system utilized pipe clamps or lugs (attached or welded to the pipe), cables, pulleys, and a set of weights. Just like the old-fashioned brass weighing scales, weights were added to one end of the pulley system until an equilibrium was reached. The counterweight design needed a large amount of space with which to operate. Constant spring hangers replaced this system because they require much less space in order to function (similar to some designs we stand on to weigh ourselves). No matter the application, our team of experienced engineers and designers can help to resolve your pipe support needs. Please contact us via our 24×7 emergency service or send an email to


Cold Shoes and Hot Shoes Designed for an Ammonia Project

Insulated Pipe Supports Designed for Cryogenic and High Temperature Pipe Systems for an Ammonia Project

PT&P custom designed 98 insulated pipe supports for an ammonia project at a chemical plant in Louisiana. The supports were designed for both cryogenic and high-temperature pipe systems, with an 8" to 22" baseplate width and a 10" to 28" saddle length. They were designed for pipe diameters of 6"-24" and are composed of polyurethane foam for cryogenic and high-density calcium silicate insulation for high temperatures. Standard Q.C. and dimensional tests were performed prior to shipment.

This project was a combination of upgrading a current anhydrous ammonia plant and adding new capacity to the facility. We worked with the EPC, on-site contractors, and operators to ensure specifications and delivery deadlines were met over a three-year period during project construction. In addition to the insulated supports discussed here, we designed, manufactured, and shipped bellmouth reducers, metallic expansion joints, pipe shoe guides and anchors, pipe hanger hardware, slide plates, snubbers, sway braces, struts, and variable spring supports.


Compact Springs Designed for an Oil Refinery Expansion Project

Compact Springs Designed for an Oil Refinery Expansion Project

Type: Compact Spring Supports (Disc Springs)
Material: Carbon Steel | PTFE, 25% Glass-Filled
Design: Movement: 1/32″ to 1/4″ | Load: 12,000 lb.
Testing: Standard Spring Rate & Calibration Tests

These compact spring supports were custom designed for an oil refinery expansion project. They will be installed underneath a heat exchanger supporting a load of up to 12,000 lb. The space available was limited to 3" for the installed height, and the movements ranged from 1/32" to 1/4". These units are the perfect solution for tight spaces where the distance between the supporting steel and the equipment/pipeline is extremely limited. These compact springs are fabricated from carbon steel and utilize engineered Belleville (disc spring) washers to achieve the desired spring rate. 25% glass-filled (PTFE) slide plates are bonded to the top of the load flange and provide a low coefficient of friction in order to adjust the spring’s height.

Here at Piping Technology and Products, we manufacture a wide range of variable spring supports along with constant spring supports. Our experience and know-how have helped to facilitate designs to incorporate site conditions where no conventional support is available.


Custom All Stainless Steel Variable Spring Supports for a Floating LNG Platform in Singapore

Custom All Stainless Steel Variable Spring Supports for a Floating LNG Platform in Singapore

Type: Variable Spring Supports
Material: Alloy 2205 Duplex/SAE 5160H
Design: Operating Load up to 3,597 lbs./Operating Temperatures of -15-200°F
Testing: Standard Load & Travel Tests

PT&P manufactured these custom variable spring supports for a floating LNG platform in Singapore. The spring housings are fabricated with alloy 2205 duplex, and the coil is manufactured from – SAE 5160H to help prevent corrosion due to sea salt. The variables installed heights range from 10-3/4″ to 12-1/16″ and are designed for an operating load of up to 3,597 lbs. Also, load tests were performed at operating temperatures of -15°F, along with liquid penetrant testing of the welds. These variable springs are also designed to suit a highly corrosive environment such as sea salt. They can operate in temperatures ranging from -14 to 200°F without compromising their load-carrying capacity. We offer a full range of pipe supports and expansion joints for offshore applications, including floating platforms for cryogenic systems for offshore LNG transfer, both for ship-to-ship and ship-to-shore. Our team of engineers and field service technicians have assisted in offshore diving examinations to both inspect and recommend solutions to help solve emergency needs.

As the floating LNG market continues to grow at a rate of almost 5% year over year, it is evident the increased demand for clean energy is the driving factor. Piping Technology and Products and its subsidiaries are well-positioned to support the global pivot to renewable and clean energy needs. In the last year alone, we designed and delivered products and services in most associated sectors, including solar, wind, water, geothermal, bioenergy, nuclear, hydrogen & fuel cell sectors worldwide.


Over 4,000 Cryogenic Pre-Insulated Pipe Supports Designed for LNG Service

Over 4,000 Cryogenic Pre-Insulated Pipe Supports Designed for LNG Service

Type: Pre-Insulated Pipe Shoe & Clamp Assemblies
Material: 304 L Stainless Steel | Protective Coating | Micarta® Insulation
Design: 20″ L x 36″ W x 75″ H | 56″ Dia. Pipeline | -459°F
Testing: Load & Pull Tests

PT&P designed over 4,000 supports for LNG service in Texas. These pre-insulated pipe shoe and clamp assemblies were custom designed for cryogenic temperatures with special low-temperature grade NP500CR Micarta® insulation. This type of Micarta® consists of a glass fabric with a specially formulated epoxy resin. It has excellent physical properties at operating temperatures down to -459°F. It has very low thermal conductivity and has been produced specifically for use in cryogenic applications. The shoes pictured are fabricated from 304 L stainless steel, A193 GR. B8 bolting, with a protective coating and designed for a 56″ diameter pipeline. The shoes measure 20″ long, 36″ wide(base), and 75″ high. This project included supports varied in pipe sizes from ¾” to 56″ in diameter. Load tests were performed prior to shipping this rush order.

As a leader in the supply of pipe supports for LNG facilities, we’ve passed on to our client’s design expertise, innovations, and deliverables for over 30 years. For this project, we supplied over 90,000 pipe supports over a three-year period, including:

  • On-site field assistance to identify the material, address material shortages, and inspection
  • Constant spring supports
  • Fabricated pipe shoes, guides, and anchors
  • Insulated shoes and supports
  • Structural supports
  • Slide plates
  • Sway braces and struts
  • Variable Spring supports
  • Wear Pads

In recent years, the use of various new and improved insulating materials have helped to produce a better product, made installation easier, lowered maintenance costs, and extended the life of the support. We offer testing at our manufacturing facility in Houston utilizing thermal scanning (infrared technology) to measure temperature at various locations around the support. Often, we build the test structures that are then employed to analyze different products for improvement based on client needs and product optimization in manufacturing and design. The results often lead to design improvements that improve the efficiency of the piping system and reduction in the cost of installation in the field. We offer 24×7 web-based emergency services, providing field service and quick turn-around time when you need it most.


Hydraulic Snubber Assemblies Designed for a Geothermal Power Plant

Hydraulic Snubber Assemblies Designed for a Geothermal Power Plant

Fronek Anchor/Darling, a division of PT&P, designed and manufactured hydraulic snubbers for Geothermal power plants. Historically, these plants are located near tectonic plate boundaries in the Earth’s crust, where thermal activity is easily tapped. This heat energy is transferred into electrical energy through the use of turbines, generators, and heat exchangers. These snubbers are fabricated from stainless steel and include a special paint system suitable for a Hydrogen Sulfide (H2S) environment. All of the snubbers for this application were a 2-1/2 bore size, capable of operating at loads up to 10,000 lb., and were provided with either 6″ or 12″ of available stroke. The Pin-to-Pin dimensions ranged from approximately 36″ to 54″. Each snubber was tested at its rated capacity to ensure acceptable dynamic performance once it was installed in the field.

A hydraulic snubber is used to protect piping from unexpected events, such as water hammers or seismic activity prevalent in geothermal applications, while allowing the piping to move freely during normal operation conditions – a typical movement driven by thermal growth. We have seen hydraulic snubbers used in a large number of different applications, typically during the design phase of a project when the Piping Engineer is designing for a line that may have transient events but must also accommodate thermal growth. A hydraulic snubber works by passing hydraulic fluid between 2 chambers via a poppet valve. When the speed of the fluid passes a threshold, the poppet valve closes and causes the Hydraulic snubber to become rigid support. There is a small relief passage between the two chambers that will eventually allow the Hydraulic snubber to “reset.”

These snubbers were designed and manufactured for one of the world’s leading developers, operators, and manufacturers of geothermal renewable energy. We have long-standing relationships with our clients as a result of our long history and extensive portfolio of products and services. In this case, we supported this client’s initiatives for over 20 years worldwide with their projects in Nevada, California, Oregon, Israel, Hawaii, and Guatemala. In addition to hydraulic snubbers, we provided constant assemblies, pipe shoes, guides, anchors, pipe hanger hardware, slide-bearing plates, and variable spring supports.


Bronzphite® Slide Plate Assemblies for a Power Plant

Structural and Bronzphite® Slide Plate Assembly for an Exhaust Duct at a Fossil-Fired Power Plant

Type: Structural Support with Slide Plates
Size: 1/2” x 5/18”
Material: Carbon Steel | Hot-dipped Galvanized | Bronzphite®
Design: 2,000 lb. Load | 730°F Temperature | 3,500 lb. Hydro-test

Piping Technology & Products, Inc. custom designed this structural support with Bronzphite® slide plates for an exhaust duct application at a fossil fuel-fired power plant in Louisiana. The Bronzphite measures 1/2” x 5″ x18” and was attached to a stand manufactured in carbon steel with a galvanized finish. The assembly is designed for an operating temperature of 730°F and an operating load of up to 2,000 lb. Also, designed with a hydro-test load of 3,500 lb. Standard visual and dimensional tests were performed prior to shipment.

Bronzphite® slide plates are commonly installed underneath the saddles of large stainless and carbon steel pressure vessels and tanks used in mining, refineries, and storage tanks storing a number of gasses such as chlorine, petroleum, and ammonia. Bronziphite plates used in these applications help to facilitate the growth of the tank due to pressure and temperature changes by lowering the friction between the supporting structural steel and the saddle of the vessel. Our Sweco division is ASME certified and can assist in the design and manufacture of small vessels and have experienced engineers utilizing materials such as Hastelloy, stainless, and carbon steel.


Constant Spring Supports Custom Designed for a Power Plant in Egypt

Constant Spring Supports Custom Designed for a Main Stream System at a Power Plant in Egypt

Type: Constant Springs & Alloy Clamp Assemblies
Size: 48″ H x 57″ L x 24″ W | 36″ dia. Clamp
Materials: Carbon Steel with HDG Finish | Alloy
Design: 1070°F | 7-1/2″ Total Travel | 24,712 lb. Load
Testing: Load and Travel Test

PT&P custom-designed and manufactured constant spring supports for a mainstream system at a power plant in Egypt. The constants include alloy clamps designed for a 900 mm (approximately 36″ dia.) pipe. They are 48″ H x 57″ L x 24″ W with 7-1/2″ total travel from the cold position. We also supplied alloy clamps designed for an operating temperature of 1070°F. The constants are fabricated from A36 carbon steel and include a hot-dip galvanized protective coating. They are designed for an operating load of 24,712 lb. The constants have been modified to accommodate a specialized spring coil and modified casing in order to fit the existing space or envelope. Standard travel and load tests were performed prior to shipping.

Constants can be used with rollers, travelers, or slide plates to accommodate lateral or axial movement in the pipeline system in plants such as solar, geothermal, soybean crushing, ethanol, and other green energy facilities. Our company and its subsidiaries work with over 90% of the leading green energy providers in the world.

Our Field Service team, along with our pipe support engineers and designers, can also conduct inspections of existing supports, provide consultation on-site remediation, and oversee installation on both a short-term and long-term basis catering to facilities worldwide. So whether a “grassroots project” or an existing plant that has been in service for years, we offer cost-effective products and services.


Variable Spring Supports Designed for a Furnace in Trinidad

Variable Spring Supports Designed for a Furnace in Trinidad

Type: F-Type Variable Spring Supports (Furnace Springs)
Material: Carbon Steel | Red Oxide Primer
Design: Movement: 1/2 “| Load: 398 lb. | Spring Rate: 84 lb./in.
Testing: Standard Spring Rate & Calibration Tests

PT&P designed and manufactured these F-Type variable spring supports for use in a furnace at a facility in Trinidad. We manufactured these furnace springs for an operating load of 398 lb., a movement up to 1/2″, and a spring rate of 84 lb./in. Customer specifications required a modified “installed height” while maintaining the spring rate, operating load and installation load. In order to accomplish this, PT&P designed, manufactured, and attached, to each spring, a “pedestal” to accomplish the increased installed height. They are fabricated from carbon steel with a red oxide primer coating (instead of a hot dipped galvanized) to protect against corrosion. Our standard hot-dipped galvanizing is not suitable for high temperatures because the zinc used in the galvanizing process can melt and cause damage to surrounding pipes and equipment. We also offer several other coatings for high-temperature applications.

We offer a wide range of modifications to our standard variable springs, from stainless steel units used in Food Processing plants and facilities which operate at Sub-Zero temperatures to units designed for use in high-temperature applications often found in refineries, fertilizer, and chemical plants. Some applications include hydrogen reboilers and radiant coils in gas vent heater systems. Our team of sales, engineering, and manufacturing offers a unique source of experience and knowledge unmatched in our industry.

In a Furnace application, both variable and/or constant spring hangers are utilized to support piping and equipment. In the past year, we have provided constant furnace springs for some of the largest refineries in the Americas. We replaced a 25-year incumbent design with a smaller envelope at a lower cost than any other offering in the market with our newly designed nano-constant. The project requirements were stringent in terms of load deviation requirements of 3% of all catalyst tube springs. We provided over 350 furnace springs in less than six months’ time from our manufacturing facility in Houston, Texas. To expedite the manufacture and shipment of springs, we built a new test machine in order to conduct tests more quickly, as every unit is tested before being shipped to the job site.

If you need assistance or are interested in scheduling a virtual or in-person training specifically on pipe supports and expansion joints for furnace applications, reach out as we are always available 24×7 via our emergency service or just send an email to


Compact Spring Supports Designed for an Oil Refinery in Minnesota

Compact Spring Supports Designed for an Oil Refinery in Minnesota

These compact spring supports were custom designed for an oil refinery in Minnesota. Typically, compact spring supports are used to support large loads but small movements relieving process equipment nozzles from overloading. In this case, the springs are designed to support loads of 5,605 lb., 4,747 lb. and 1,250 lb. and movements of 0.133” and 0.029” upward and 0.199″ downward, respectfully.

Compact spring supports utilize engineered Belleville (disc spring) washers. Since these spring supports contain disc springs, both the support housings and the springs contained in the housings are made from 304 stainless steel. Corrosion resistance is significantly increased by using this combination. Glass coatings can also be applied to both the housing and springs to make the support system virtually impervious. Each assembly underwent load testing prior to shipment.


Variable Spring Supports Designed for a Large Refinery Project in Texas

Variable Spring Supports Designed for a Large Refinery Project in Texas

PT&P manufactured 266 variable spring supports for a refinery in Texas. The variable spring hangers include chained travel stops for ease of disengagement and reinsertion during plant shutdowns. Variable springs (a type of Compression spring) are used in a wide range of applications (including various Low Carbon Capital projects, CO2 removal units, and Infrastructure improvements) to support the piping system. The variables are fabricated from carbon steel and hot-dipped galvanized to protect against corrosion. The PTP-2 variables were designed for loads up to 13,850 lb. and movements up to 0.1875” upwards. The PTP-4 variables were designed for a maximum load of 15,050 lb. and movements up to 0.8125” upwards. Each spring hanger underwent standard load testing and QC tests. PT&P also provided constant supports for loads that remain uniform throughout the deflection cycle and sway struts for controlling vibration and shock loading while restraining movement due to thermal expansion for this order.