Big Ton Spring Supports with Low Friction Rollers

Big Ton Spring Supports with Low Friction Rollers
Big Ton Spring Supports with Low Friction Rollers

PT&P fabricated several big ton spring assemblies consisting of two different models for a refinery expansion project in India. The larger model has an operating load of 25,590 lb. and a design travel of .420″ up.

Big Ton Spring Supports with Low Friction Rollers
Low Friction Rollers

The smaller model has an operating load of 12,100 lb. and a design travel of .443″ up. The big tons will be utilized to support substantial vertical loads while simultaneously providing a large platform to accommodate axial movement of the piping system across the load flange. Low friction rollers are installed to reduce the sliding friction between the load flange and the bottom section of a pipe shoe.

Do you require big ton springs in your plant or refinery? Let us price them for you today!
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5′ 7-1/2″ Tall F-Type Variable Spring Support Assemblies for an Oil Refinery in California

5′ 7-1/2″ Tall F-Type Variable Spring Support Assemblies
5′ 7-1/2″ Tall F-Type Variable Spring Support Assemblies

PT&P designed and fabricated F-type variables for an oil refinery in California. The variable springs are designed for an operating load of 49,771 lb. and an installed load of 43,000 lb. Two coils are used in tandem to achieve a vertical movement of 1-5/8″ downward. The variables are fabricated from hot-dipped galvanized carbon steel and are customized with an extended load column to reach an installed height of 67-1/2″. The variables for this project are the largest standard double springs offered; however, PT&P can customize to any load specification. Standard load testing was performed prior to shipment.

Want to learn more about variable springs? Instantly view a past variables webinar!
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Constant Spring Assemblies Custom Designed for Replacement of Failed Supports

Constant Spring Assemblies Custom Designed for Replacement of Failed Supports
Constant Spring Assemblies Custom Designed for Replacement of Failed Supports
Constant Spring Assemblies Custom Designed for Replacement of Failed Supports
Failed Constants

This initial order included PT&P’s field services division testing and recalibrating four constant spring supports not manufactured by PT&P. A preliminary inspection of the original constants revealed deformations in the spring coil housing. This is indicative of defective coils; therefore, before any load tests were conducted, inspection windows were cut into the spring coil cover to confirm the initial hypothesis (Figure 2). Inspection of the coils revealed complete deterioration with broken and missing sections of the spring. Subsequent inspections of the remaining three assemblies illustrated similar failures. The original constants were then disassembled (Figure 3) to determine the feasibility of replacing only the coils while utilizing the original frame/cam components.

Constant Spring Assemblies Custom Designed for Replacement of Failed Supports
Failed Constants

The original spring coils were different in spring rate, length, and diameter than any standard PT&P coils; therefore, multiple coils were required to duplicate the overall function of the existing coils. Using multiple coils also required modifications to the existing frames. In an effort to expedite the overall delivery schedule, entirely new constant springs were manufactured in one week (Figure 1). The four new constants measure 53″ long, 13″ wide and 86″ tall. They have a 18-3/4″ diameter spring coil with a coil housing of 20-1/2″ diameter. The new constant assemblies are designed for an operating load of 13,332 lb., travel of 13″ upward and 2″ downward for a combined total travel of 15″. A load test throughout the total travel range was performed on each constant.

Want to learn more about constant springs? Watch a recording of a past constant webinar today!
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Billet Style Clevises & Turnbuckles for Temperatures up to 1000ºF for a Power Plant

 

Billet Style Clevis
Billet Style Clevis

The clevis and turnbuckle pictured are each fabricated from individual solid pieces of 304H stainless steel. The 304H material, which has a maximum carbon content of 0.06%, was required because these items are designed to be used in an environment with temperatures up to 1000ºF. The customer’s specifications mandated that no welding would be allowed on either the clevises or turnbuckles. Additionally, no forgings were readily available, so blocks of 304H stainless steel were utilized in this design.

Billet Style Turnbuckle
Billet Style Turnbuckle

Both the clevises and turnbuckles are made to accommodate rod diameter ranges between 1-1/4″ to 1-3/4″. These components have a maximum load capacity of 18,600 lb. The clevises measure 3″ thick x 5-1/4″ wide x 10-5/8″ tall. The turnbuckles measure 2″ thick x 4″ wide x 9-1/4″ tall. Prior to fabrication, each component was modeled using finite element analysis to determine that stress levels are within the acceptable range.

Do you require some pipe support hardware for your project? Get pricing today!

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November 2009 News: PT&P is Awarded the ISO Certificate

PT&P is Now ISO 9001:2008 Certified (11-23-2009)
Piping Technology & Products, Inc. is awarded the ISO 9001:2008 certificate by DNV Certification, a division of Det Norske Veritas (DNV), for the Manufacture of Hot and Cold Pipe Supports. This certificate proves that PT&P’s Quality Management System has been certified against the best practice standard and is compliant.

ISO 9001:2008

View ISO 9001:2008 Certificate

The latest version of standards, ISO 9001:2008 is created by the International Organization for Standardization (ISO), who set international requirements for Quality Management Systems. By conforming to the Quality Management System, Piping Technology & Products, Inc. demonstrates predictability of internal operations and the ability to meet customer requirements. While becoming certified, a company can identify the areas that are most critical to operations through management system audits. Once problem areas are identified, measured, managed and improved, customer satisfaction will rise, staff responsibility and motivation will also experience growth.

25-7/8″ Diameter High Temperature Supports for a Rush Job

25-7/8″ Diameter High Temperature Supports for a Rush Job
25-7/8″ Diameter High Temperature Supports for a Rush Job

PT&P fabricated hot shoes with an insulation thickness of 2 ½” and a pipe size of 20″. The supports are fabricated from carbon steel with a red oxide finish and calcium silicate insulation. They are capable of loads up to 3400 lb. and temperatures ranging from 40°F to 1200°F. PT&P completed delivery for this rush job within two weeks.

Want to learn more about hot shoes? Instantly watch a pre-insulated support webinar today!

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4″ to 14″ Diameter Spectacle Blinds for Process Piping

4″ to 14″ Diameter Spectacle Blinds for Process Piping
4″ to 14″ Diameter Spectacle Blinds for Process Piping

 

4″ to 14″ Diameter Spectacle Blinds for Process Piping
4″ to 14″ Diameter Spectacle Blinds for Process Piping

Sweco Fab, Inc., a division of PT&P, fabricated a variety of six spectacle blinds that will be used for selective line isolation. The spectacle blinds are fabricated from A516-70 carbon steel with sizes ranging from 4″ to 14″ diameter and per ASME B16.48 code. The function of a spectacle blind is to allow a line to be in either full shut-off mode or full flow mode, depending on which side is being utilized. Spectacle blinds are a lower cost alternative to double block and bleed valves where OSHA requires positive isolation of piping segments for safety reasons.

Want to learn more about spectacle blinds? View a webinar about Sweco Fab today!
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Hydraulic Snubber and 3-Bolt Clamp Assemblies for a Refinery Expansion Project

Hydraulic Snubber and 3-Bolt Clamp Assemblies
Hydraulic Snubber and 3-Bolt Clamp Assemblies (Item #2 & #3)
Hydraulic Snubber and 3-Bolt Clamp Assemblies for a Refinery Expansion Project
Hydraulic Snubber (Item #1)

Fronek Anchor/Darling Enterprises, Inc. and PT&P designed and fabricated hydraulic snubber and 3-bolt clamp assemblies for a refinery expansion project in Louisiana. A cycle test throughout the full stroke from zero to fully extended was performed prior to shipping.

Item #1: C-C: 61″, stroke: 12″, cylinder size: 5″ dia., max. load: 50,000 lb., 3-bolt clamp: A240 Gr. 304 SS, pipe size: 12″

Item #2: C-C: 71-7/8″, stoke: 6″, cylinder size: 4″ dia., max. load: 30,000 lb., -bolt clamp: A-36 carbon steel, pipe size: 16″

Item #3: C-C: 85-5/8″, stoke: 6″, cylinder size: 4″ dia., max. load: 30,000 lb., -bolt clamp: A-36 carbon steel, pipe size: 16″

Do you see a need for snubbers or clamps in your piping system? Get pricing today!
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48 Sway Braces for a Refinery Expansion Project.

48 Sway Braces for a Refinery Expansion Project
48 Sway Braces for a Refinery Expansion Project

The carbon steel sway braces for this project range in length from 88-3/8″ to 95-3/4″. The largest sway brace has an operating load of 18,000 lb., a design travel of 12″ in either compression or extension, and a spring rate of 1416 lb. per inch. The smallest sway brace has an operating load of 7000 lb., a design travel of 8″ in either compression or extension, and a spring rate of 1000 lb. per inch.

The anticipated loads and movements exceed those of the largest standard PT&P sway brace; therefore, these sway braces required a custom design and fabrication. Each of the 48 sway braces are configured with a unique combination of spring coils, housings, and internal components to accommodate the non-standard loads and movements.

Do you require sway braces for a current or upcoming project? Let us price them for you!
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Slide Plate Assemblies with Marinite® Insulation and Vibration Pads

Slide Plate Assemblies with Marinite® Insulation and Vibration Pads
Slide Plate Assemblies with Marinite® Insulation and Vibration Pads

The slide plate assemblies were fabricated from a combination of stainless steel for the low-friction sliding surface and 2-3/4″ Marinite® insulation to isolate the higher temperatures. A fabric reinforced isolator pad was placed between the slide plate and the I-beam for vibration control. The slide plates were tested for both load and heat transfer and will be utilized in a chemical plant.

Do you need slide plates for your application? Let us price them for you today!
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Pig Launcher and Receiver with a GD Closure for a Plant on Sakhalin Island, Russia

Pig Launcher and Receiver with a GD Closure
Pig Launcher and Receiver with a GD Closure

Both pig launcher and receiver are fabricated from various low temperature carbon steels. They also include a GD Closure built to ASME Section VIII specifications. The operating temperature range is from -35°C to 65°C. The receiver is 33′ long and the launcher is 20′ long. Both have a 24″ diameter major barrel feeding into a 16″ diameter minor barrel. A rugged three coat paint system was applied per customer specifications. Various tests were performed, from hydrostatic and dye-penetrant to full radiography and ultrasound.

Want to learn more about pig launchers? Instantly view a past webinar on pig launchers!

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Riser Clamp for a 30″ Diameter Vertical Pipe at a Power Plant

Riser Clamp for a 30" Diameter Vertical Pipe
Riser Clamp for a 30" Diameter Vertical Pipe

This carbon steel riser clamp is designed for an operating load of 22,400 lb. at 650°F, and has a hot-dipped galvanize finish. It is fabricated from 1¾” x 12″ bar stock with an overall length of 86″. PT&P has an extensive inventory of all types of pipe clamps made from carbon steel with galvanized or black finishes. Clamps from alloy steels for high-temperature applications are also available.

Do you see a need for riser clamps in your plant? Let us price them for you today!
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How are failures due to inadequate flexibility now almost nonexistent?

Increase in the number of segments (nodes) reviewed though computer use and use of precise calculations.

Riser Clamps for 54″ FRP Pipe

Riser Clamps with Neoprene Lining for 54" FRP Pipe
Riser Clamps with Neoprene Lining for 54" FRP Pipe
Riser Clamps with Neoprene Lining for 54" FRP Pipe
Neoprene Lining

The riser clamps are 54″ in diameter and custom designed to be installed in the Emission Control Unit of a 1600 MW coal fired power plant in Texas. The clamps include neoprene lining adhesively bonded to the carbon steel to protect the FRP pipe. Prior to assembly, the riser clamps received a coat of Red Alkyd Primer to prevent rust and resist moisture and corrosion.

Riser Clamps with Neoprene Lining for 54" FRP Pipe
Riser Clamps Being Shipped

Do you see a need for similar clamps in your plant? Get pricing today!


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58″ Diameter High Temperature Rotational and Axial Stop Insulated Supports

58" Diameter High Temperature Rotational and Axial Stop Insulated Supports
Quality Control Check

 

58" Diameter High Temperature Rotational and Axial Stop Insulated Supports
Rotational and Axial Stop Hot Shoe

Piping Technology & Products, Inc. manufactured high temperature rotational and axial stop insulated supports for styrene lines in a petrochemical complex. The supports have an overall outside diameter of 58″ and are capable of handling temperatures up to 1500°F. They are fabricated from a combination of carbon steel for the top and stainless steel for the bottom. The hot shoes include Belleville washers, an Inconel 800HT rotational insert assembly, and high density fire temperature insulation.

Want to learn more about pre-insulated supports? View a past pre-insulated support webinar!
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F-Type Variable Springs with Fully Adjustable Travel Stops

F-Type Variable Springs with Fully Adjustable Travel Stops
F-Type Variable Springs with Fully Adjustable Travel Stops

 

Piping Technology & Products, Inc. manufactured a variety of F-type variable springs with loads ranging from 526 lb. to 33723 lb. These variable springs are fabricated from a combination of carbon steel and A193-B7 CroMoly steel with A304 stainless steel slide plates. The variable springs are modified to include fully adjustable travel stops. The first purpose of the adjustable travel stops is to aid by distributing the load evenly during the installation process. The second purpose is to allow spring adjustment to any load within the operating range.

Do you see a need for variable springs in your project? Get pricing today!
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U-Type Constants with Rollers to Reduce Friction

U-Type Constants with Rollers to Reduce Friction
U-Type Constants with Rollers to Reduce Friction
U-Type Constants with Rollers to Reduce Friction
Rollers

This constant utilizes sealed cam follower roller bearings in place of slide plates that are generally used between the moving table and stationary frame. The rollers help to reduce the friction on the table, reduce residual loads which improve constant deviation, and help to restrict table movement in horizontal directions. These U-Type constants are fabricated from A36 carbon steel with dimensions of 28″H x 37″L x 17″W. The boxing, bolting patterns and loading table location are custom designed per customer specifications. The design also includes a graphite plate bonded to the top of the load flange to reduce the friction between the constant load flange and the saddle support above it. The supports are designed to carry 3015 lb. of piping load with an upward travel of 6″. The constants underwent standard load and travel testing before being shipped to an energy plant.

Want to learn more about constant springs? Instantly view an archived constant webinar!
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Flue Gas Duct Damper

 

Flue Gas Duct Damper
Flue Gas Duct Damper

This damper was fabricated from a combination of 304 stainless steel and Inconel®. It is designed as a shut-off damper to control the flow of flue gas in an ammonia plant. The damper will be connected to a motor-driven control system by the linkage shown in the picture. The overall dimensions are 10′ x 6′ with a weight of 2,200 lb. It was painted with standard inorganic zinc primer and top coat per customer specifications. The damper went through visual inspection, dye-penetrant, and functional testing before being shipped to the customer. Refractory lining, utilized to withstand the high temperatures, will be added during installation.

Do you have an application that requires a damper? Get pricing today!
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Pre-Insulated Base Supports for a LNG Plant

Pre-Insulated Base Supports for a LNG Plant
Pre-Insulated Base Supports for a LNG Plant
Pre-Insulated Base Supports for a LNG Plant
Front View

These low-temperature base supports are fabricated from carbon steel with a hot dipped galvanize finish and range from 23″ to 37″ in height. The supports are 18″ in diameter with a base plate of 20″W x 20″L x 1″H and are designed to support pipes ranging in size from 24″ to 30″. The base supports are fabricated with micarta insulation and will be utilized in a LNG plant as a base beneath a cold temperature pipe.

Do you require pre-insulated supports for your project? Get a quote today!
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48″ Guided Pre-Insulated Pipe Supports for High Temperatures

48" Guided Pre-Insulated Pipe Supports for High Temperatures
48" Guided Pre-Insulated Pipe Supports for High Temperatures

Pipe Shields, Inc., a subsidiary of Piping Technology & Products, Inc., designed these pre-insulated supports for a pipe size of 48″. The clamp and base are fabricated from carbon steel that includes a hot dipped galvanized finish. The 4″ thick insulation is a high density calcium silicate. These guided supports allow for a maximum axial travel of plus or minus 4 1/2″ and have a vertical load rating of 7,100 lb. The operating temperature of the pipe may exceed 1,200ºF, therefore the hot shoes are designed for 1,700ºF. These heavy duty base mounted pipe supports are specially designed to be installed on four emergency diesel exhaust mufflers in a hospital.

Do you need hot shoes for your current or future project? Get pricing today!
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