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

July 4, 2023

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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 info@pipingtech.com.

PT&P REF. ORIGINAL POST 08232016

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Compact Springs Designed for an Oil Refinery Expansion Project

June 13, 2023

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.

PT&P REF. ORIGINAL POST 03092017

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

May 30, 2023

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.

PT&P REF. ORIGINAL POST 01022018

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Variable Spring Supports Designed for a Furnace in Trinidad

April 11, 2023

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 info@pipingtech.com.

PT&P REF. ORIGINAL POST 02212017

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Compact Spring Supports Designed for an Oil Refinery in Minnesota

April 4, 2023

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.

PT&P REF. ORIGINAL POST 04122016

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Constant Assemblies Custom-Designed for Hot Service at a Leading Plastic Manufacturing Plant in North Carolina

February 28, 2023

Constant Assemblies Custom-Designed for Hot Service at a Leading Plastic Manufacturing Plant in North Carolina

Type: Custom-Designed Constant Spring Supports
Size: PTP-100 B-Type | 16” x 24” x 30”
Material: A36 Carbon Steel | Hot-dipped Galvanized| Epoxy Coating
Design: Load Range: 2,280 lb. to 7,143 lb. | 2″ Total Travel
Testing: Q.C. Inspection | Load and Travel Tests

PT&P custom-designed Constant Spring Support with travel stop adjustment rods for a manufacturing company. We “re-created” the design of constants sold years ago by our now sister company, Fronek Anchor/Darling. The constants needed to fit the “envelope” or space of the original constants sold to this client for an application in an existing plant. The constants were fabricated from A36 carbon steel, hot-dipped galvanized, and painted with an epoxy coating. The assemblies are designed for an operating load ranging from 2,280 lb. to 7,143 lb. with 2″ of total travel. Standard load and travel test and Q.C. inspections were completed prior to shipment to North Carolina.

We have a great deal of experience manufacturing constant spring supports similar to that of existing constants if needed to fit existing space limitations. We can also refurbish constants manufactured by competitors if the units are repairable. So whether the constants are for large duct systems in power and refining plants or focused around renewable, carbon-neutral plants, we can assist our clients to find a cost-effective solution.

PT&P REF. ORIGINAL POST 08042020

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Variable Springs with Clevis Hangers for an Ethylene Cracker Plant

January 31, 2023

B-Type Variable Spring Supports with Clevis Hangers for an Ethylene Cracker Plant in Texas

Type: Variable Spring Supports with Clevis Hangers
Material: A36 Carbon Steel | 304 Stainless Steel
Design: 800°F | 619 lb. Ld. | 0.5″ Up Travel
Testing: Load and Travel Tests

Piping Technology & Products designed these B-Type variable spring supports with clevis hangers for an ethylene cracker plant in Texas. Interestingly enough, we recently supplied over 50,000 supports to one of the largest ethane cracker polymer plants in the US, which was completed last year. In addition to variables, we supplied slide bearing plates, hot and cold insulated shoes/supports, snubbers/sway braces/sway struts, pipe hanger hardware, expansion joints metal bellows, rectangular & circular spacers, davit arms, welded pipe shoes, rod hanger assembly, and wear Pads

On this client order, the variable spring supports, threaded rods, and hex nuts were fabricated from A36 carbon steel, and the clevis hangers from 304 stainless steel. The assemblies are 83-1/8″ in length, and the spring size is 6-80-B. They are designed for an operating temperature of 800°F, an operating load of 619 lb, and 0.5″ of movement. Standard load and travel tests were performed prior to shipment.

PT&P REF. ORIGINAL POST 06052018

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B Type & C Type Constants for an Oil Refinery in Louisiana

January 3, 2023

B Type & C Type Constants for an Oil Refinery in Louisiana

Type: B-Type & C-Type Constant Spring Supports
Size: 12″ x 18″ x 20″ to 12″ x 12″ x 32″
Material: A36 Carbon Steel | Hot-dipped Galvanized
Design: Operating Load Range: 475 lb. to 1,250 lb.
Movement of 2-1/4″ to 5″
Testing: Q.C. Inspection | Load and Travel Tests

PT&P fabricated multiple B-Type and C-Type constant spring supports for an oil refinery in Louisiana. The constants are fabricated from A36 carbon steel and hot-dipped galvanized. The dimensions range from 12” x 18” x 20” to 12” x 12” x 32”. The operating load range is 475 lb. to 1,250 lb. with movement of 2-1/4” to 5”. Standard load testing was completed to ensure quality and performance.

PT&P REF. ORIGINAL POST 05042020

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Constant Spring Supports for an Oil Refinery in Texas

December 27, 2022

Custom Designed U-Type Constant Spring Supports for an Oil Refinery in Texas

Type: Constant Spring Supports
Material: Carbon Steel w/ HDG Finish
Design: 4,000 lb. Load | 3 1/2″-9 1/2″ Vertical
Testing: Load and Travel Tests

PT&P custom designed and manufactured ten 200 U-Type constant spring supports with slide plates for an Oil Refinery in Texas. They are fabricated from A36 carbon steel with an HDG finish for plates, angles, and cans. Its dimensions are 31″ in height and 52″ in length with 19″ in width. They are designed for a movement of 3 ½” up to 9 ½” and an operating load of 1100 lbs up to 4800 lbs. They were custom designed to match the box dimensions of a competitor. The units had a Standard Load Test performed prior to shipment.

Constant springs are sometimes installed near rotating equipment such as pumps and compressors used in manufacturing, mining operations, utilities, oil and gas extraction, and cross-country pipelines. By providing constant support to piping leading to rotating equipment subject to both vertical and horizontal movement, these types of spring hangers help to decrease stresses imposed on rotating equipment, thereby extending the life of the bearings and seals within these units.

At Piping Technology and Products, our commitment to continuous improvement has helped us to become a leader in the industry by providing the highest quality products and services.

PT&P REF. ORIGINAL POST 10202020

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Furnace Applications – Spring Supports, Expansion Joints & Furnace Seal Bags

December 6, 2022

Ptp furnace application products

An industrial furnace, also known as a direct heater or a direct-fired heater, is a device used to provide heat for an industrial process. Furnace designs vary as to their function, heating duty, type of fuel, and method of introducing combustion air. Heat is generated by an industrial furnace by mixing fuel with air or oxygen, or from electrical energy. The residual heat will exit the furnace as flue gas. Types of industrial furnaces include batch ovens, vacuum furnaces, and solar furnaces. Industrial furnaces are used in applications such as chemical reactions, cremation, oil refining, glasswork, metallurgy, mechanical engineering, chemicals, ceramic, and building materials. Industrial furnaces using fossil fuels are characterized by heat losses from flue gases with a temperature of 500°C and above.

PT&P supplies many products that are well-suited for furnace applications. The first category we’ll take a look at is Engineered Spring Supports. We size furnace springs the same way as we would for a conventional variable or constant spring support. Construction may include a welded design instead of bolted and custom nameplates with the test data and ID tag. Most furnace spring supports are coated with red oxide primer to avoid potential hazards when exposed to high temperatures.

Ptp furnace application variables in service combined

PT&P specially designed and fabricated hundreds of altered Type A Variable Spring Hangers in order to accommodate the special travel and spring rate needed to support the furnace tubes of a hydrogen reformer in Venezuela. In order to accommodate customer-specified travel and spring rate, modified spring coils were required. With a travel of 8-7/8″, the variable spring hanger casing lengths were increased from the standard size of 32″ to over 6′ long. The calculated spring rate is 79 lb/sq in for an operating load of 2,804 lb. and an installed load of 3,505 lb. The housings are coated with heat-resistant paint, which protects the spring coils from corrosion and high temperatures in the furnace area.

Expansion Joints are not installed inside furnaces due to the extremely high temperatures of the environment and the piping system. Expansion joints will typically be found on the duct work and in the piping coming in and out of the furnace. In the last six months, we have shipped over 40% of our expansion joint jobs in less than 2 weeks to meet customer project deliverables.
Fabric expansion joint application

Fabric Expansion Joints that are in-service near furnaces, typically include a 3-layer belt consisting of Silicone, Fiberglass, PTFE, and Mineral Wool Insulation. The configurations are either round, rectangular or square as seen in the examples below.

Ptp furnace application products

Furnace Bags are used to seal high-temperature tubes that penetrate the furnace floor. The furnace bag consists of multiple layers of flexible, flame and heat resistant, impervious fabric designed to operate from start-up to high-temperature design conditions. The bag will expand and contract with the varying furnace temperatures.

Furnace Bag

Stainless steel clamps or band straps connect one end of the pipe that goes through the penetration opening and the other to another sleeve in the furnace floor. A tapered steel coil is installed around the conduit inside the bag to prevent the fabric from collapsing inward during vacuum conditions. PT&P’s standard furnace seal bag is nickel reinforced, with a special coating that reduces airborne fibers and increases tensile strength.

 

Furnace application diagram

PT&P REF. ORIGINAL POST 11092021

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