F-Type Variable Spring Supports Designed with Stainless Steel Slide Plates and Permanent Travel Stops

November 8, 2014

F-Type Variable Spring Supports Designed With Stainless Steel Slide Plates And Permanent Travel Stops

PT&P custom designed F-type variable spring supports for an oil refinery in Saudi Arabia. These assemblies range in height from 14-1/4″ to 39-3/8″ and include stainless steel slide plates and upper permanent travel stops. Some of the variables include an additional pipe extension to meet the installation height requirement. The variables are fabricated from carbon steel and painted with a special paint to resist corrosion. All variable assemblies underwent a standard variable spring test prior to shipment.

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B-Type Constant Spring Supports Designed for a Hydrocracker Application

October 20, 2014

B-Type Constant Spring Supports Designed For A Hydrocracker Application

PT&P manufactured B type constant spring supports for a hydrocracker application at a refinery in Port Author, TX. These custom designed constants are 83″ x 41″ x 20″, and designed to support a 53,000 lb. riser pipe through two trunnions. The constants are designed for an operating load of 26,700 lb. with 10-1/2″ of total travel. They are fabricated from A36 carbon steel and underwent standard load and travel testing prior to shipment.

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G-Type Variable Spring Supports Designed for a Chemical Plant

September 20, 2014

G-Type Variable Spring Supports Designed For A Chemical Plant

PT&P designed G-Type variable spring supports for a chemical plant in Texas. The variables are comprised of two standard spring housing joined together with an intermediate bridge assembly. The bridge assembly is customized to match existing site conditions which allows for use in applications with limited space or interferences. The variables are fabricated from carbon steel with a hot-dipped galvanized finish. The assemblies were designed for a total operating load of 23,522 lb. with a downward design travel of 3/8″. Each assembly underwent a standard load test prior to shipment.

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Hydraulic Snubbers Designed for an LNG Facility in Texas

September 6, 2014

Hydraulic Snubbers Designed For An Lng Facility In Texas

Fronek Anchor/Darling Enterprises, a division of PT&P, designed snubbers for a LNG facility in Texas. These Fig. 511 AD hydraulic snubbers range in size from 76″ – 85″ piston-to-piston and are fabricated from carbon steel. They are designed for a maximum load of 32,000 lb., 6″ stroke and have a 4″ diameter cylinder. Hydraulic snubbers are designed to protect the piping system when a sudden, heavy load is applied (such as an earthquake of high intensity), which can cause serious vibrations leading to damage and possible failure of the piping system. A cycle test throughout the full stroke from zero to fully extended was performed prior to shipment

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Trunnions Designed with Insulation for an LNG Facility

August 23, 2014

Trunnions Designed With Insulation For An Lng Facility

PT&P designed cryogenic trunnions with 2″ thick G-10 block insulation for an LNG facility in Australia. The trunnions are fabricated from 10″, 12″ and 24″ diameter pipe. The upper sections are fabricated from stainless steel pipe and plate while the lower sections are carbon steel. These insulated supports are designed for temperatures down to -300°F and operating loads of 4,990 lb.

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Variable Spring Supports Custom Designed for a Furnace Application in an Ammonia Plant

July 28, 2014

Variable Spring Supports Custom Designed For A Furnace Application In An Ammonia Plant

PT&P custom designed variable spring supports for catalyst tubes in a furnace for an ammonia plant in Canada. The furnace springs are fabricated from carbon steel and painted with a red-oxide primer to help prevent corrosion. This project required special coils that were within +/- 5% of the calculated spring rate. Over 245 springs underwent calibration test prior to shipment. PT&P has been supplying furnace springs for over 25 years and can customize them to meet your specifications.

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Bolt Cradle Supports with Slide Plates Designed for a Combined Cycle Facility

July 14, 2014

Bolt Cradle Supports With Slide Plates Designed For A Combined Cycle Facility

PT&P custom designed Fig. 900 bolt cradle supports with slide plates in 3 weeks for a combined cycle facility in Virginia. The supports are fabricated from carbon steel with a hot-dipped galvanized finish. They are 20″ long and range from 1’2-3/8″ to 1’6-7/8″ in height. The cradle supports are designed for an operating temperature range from 300°F to 530°F and are capable of supporting loads ranging from 1,340 lb. to 3,774 lb. with 0.05″ to 3.33″ of axial movement.

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Variable Spring Hangers Designed for an Oil Sands Expansion Project

June 30, 2014


Piping Technology & Products designed and fabricated 107 variable spring hanger assemblies for an Oil Sands Expansion Project in a central processing facility in Canada. We fabricated these C-type variable springs from hot-dipped galvanized carbon steel. The design loads range from 3,343 lb. to 3,417 lb., and each assembly underwent a series of tests and detailed quality control inspections prior to shipment.

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Pre-Insulated Pipe Supports Designed for High Temperatures in a Power Plant

June 22, 2014

Pre-Insulated Pipe Supports Designed For High Temperatures In A Power Plant

Piping Technology designed hot shoes with sliding bases for a power plant in Mississippi. The assemblies will be installed on 28″ diameter pipe and include 1-1/2″ thick calcium silicate insulation. Manufacturing fabricated these supports from galvanized carbon steel with a polyethylene base. They are capable of an operating load of 7,200 lb., temperatures up to 1,200 degrees F and an axial movement of +/- 4-1/2″. The shipment was met three days prior to the critical field need date.

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