Constant Spring Support Assemblies for an LNG Plant in Central Africa

June 18, 2018

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 by adding a secondary plate and angles, which will be welded to the structural beam. The constants range in size from 20.5” in height, 38.75” in length, and 13” in width. They’re designed for a load up to 1790 lb. 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 an LNG plant in Africa.

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Variable Springs with Clevis Hangers for an Ethylene Cracker Plant

June 4, 2018

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. 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.

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Big Ton Spring Supports Designed for an Oil Refinery in Australia

May 29, 2018

Big Ton Spring Supports Designed for an Oil Refinery in Australia

Type: Big Ton Spring Supports
Material: A36 carbon steel | Hot-dipped Galvanized | SS Slide Plates
Design: 16,276 lb. Ld. | 0.196″ Up Travel

The big ton spring support is used for supporting large heavy units such as compressors, vessels and pumps in power and petrochemical plants. The housing and frame are fabricated from carbon steel and the spring coils are coated in neoprene. Polished stainless steel slide plates are added to the top of the load flange, which reduces the coefficient of friction to allow for lateral movement. This big ton spring support is designed to allow limited movement of 0.196″ upwards, with an operating load of 16,276 lb. This big ton spring enabled the client to reduce engineering man hours by avoiding the redesign of the piping system due to limited space requirement.

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C-Type Constant Springs Designed for a Chemical Plant in Italy

January 29, 2018

C-Type Constant Springs Designed for a Chemical Plant in Italy

Type: Constant Spring Supports
Size: 14″ x 19″ x 64″
Material: A36 Carbon Steel
Design: 2 1/2” to 5” Total Travel and 7,681 lb. Load
Testing: Standard Load and Travel Tests

PT&P custom designed and manufactured C-Type constant spring supports for a chemical plant in Italy. The constants were designed for travel from 2 1/2” to 5” and are specified to carry a load of 7,681 lb. They are fabricated from A36 carbon steel and have a physical size of 14″ x 19″ x 64″. The supports were designed for max deviation of 6%. The standard load adjustment is 10%. However, this unit was designed with capability of up to 20%, while the standard load deviation is 4%. This constant was custom designed to allow for single pin connection with negligible constant frame at the pin connection. A multi-position locking device was installed, and standard load and travel tests were performed to ensure quality and precise performance.

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U-Type Constant Spring Supports for a Plant in Texas

January 12, 2018

U-Type Constant Spring Supports in Texas

Type: Constant Spring Supports
Size: 35 7/16″ Height & 75 3/4″ Length
Material: A36 Carbon Steel with HDG/304 Stainless Steel
Design: 9″ Total Travel at 979°F & Operating Load 6183 lbs.
Testing: Hydrotested at 6744 lbs.

These 200 U-Type constant spring supports with slide plates were designed by PT&P for a plant in Texas. They are fabricated from A36 carbon steel with an HDG finish and the slide plates manufactured from 304 stainless steel. Its dimensions are 35 7/16″ in height and 75 3/4″ in length. They are designed for 9″ of total travel at 979°F and an operating load of 6183 lbs. The units were hydrotested at 6744 lbs. prior to shipment.

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

January 2, 2018

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 manufactured from – SAE 5160H. The variables installed heights that range from 10-3/4” to 12–1/16” and are designed for an operating load up to 3,597 lbs. Also load test dye penetrate test was performed operating temperatures of -15°F. These variable springs are also designed to suit a high corrosive environment. They can operate in temperaturs ranging from -14-200°F without compromising its load carrying capacity.

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Big Ton Spring Supports Custom Designed for a Chemical Plant in Singapore

December 26, 2017

Big Ton Spring Supports Custom Designed for a Chemical Plant in Singapore

Type: Big Ton Spring Supports
Material: Carbon Steel/SAE 5160H
Design: 44mm up & Operating Load 130,642 N
Testing: Standard Load & Travel Tests

PT&P custom designed big ton spring supports for a chemical plant in Singapore. These types of supports are used in supporting large heavy units such as compressors, vessels and pumps in power and petrochemical plants. The materials that were used are a carbon steel housing and frame with spring coil- SAE 5160H. The big ton spring support is designed to allow limited movement of 44 mm up with operating load of 130,642 N. By doing this, it’s saving the customer from having to entirely redesign the piping system and saving thousands of dollars. This custom big ton design was shipped in 6 weeks.

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100-E Type Constant Spring Supports Custom Designed for a Power Plant in Canada

December 11, 2017

100-E Type Constant Spring Supports Custom Designed for a Power Plant in Canada

Type: Constant Spring Supports
Size: 52 1/4″ x 62 1/8″
Material: Carbon Steel
Design: Operating Load 21,600 to 26,350 lbs & of 3-7” of Movement
Testing: Standard Load & Travel Tests

PT&P custom designed and manufactured constant spring supports for a power plant in Canada. A total of four constant assemblies were fabricated from carbon steel. The customer designed with dimensions of 100-73-E, & 100-69-E with a thermo chemical process. They are designed for operating load 21,600 to 26,350 lbs and operating movement of 3-7” of movement. Load and travel testing were performed prior to the shipment.

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

November 27, 2017

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 and with a hot-dipped galvanized finish. The springs are designed to accommodate a Hydro Test Load of 34,000 with operating Load of 31,563 and installed Load of 29,000, movement of 0.82″ downward. A Standard Load and Travel test was conducted on the variables prior to shipment. The springs utilize a rod diameter of 2” and the spring casing 8′ long and 3 1/8” in diameter.

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