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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Custom Designed Big Ton Spring Supports for a Propane Dehydrogenation Application in Texas

November 20, 2017

Custom Designed Big Ton Spring Supports for a Propane Dehydrogenation Application in Texas

Type: Big Ton Spring Supports
Size: 42″ x 24″ x 26 1/2″
Material: Carbon Steel
Design: 94,261 lb. Load & 0.085” Movement
Testing: Standard Load Tests

PT&P custom designed big ton spring supports for a propane dehydrogenation application at a chemical plant in Texas. The components within this assembly include the spring housing, coils, name plates, pressure plate, and load indicator. While both assemblies measure 42” L x 24” W x 26-1/2” H, it was modified based on independent specifications for operating loads and movement to accommodate a load of 94,261 lb. and 0.085” of movement. This type of support is ideal for applications, such as supporting pressure vessels that combine very heavy loads with thermal expansion because of the stability they provide. The big ton was tested in the load cell to insure proper operation throughout the entire working range of the coils.

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Custom Compact Springs Designed to Support a Storage Tank

October 9, 2017

Custom Compact Springs Designed to Support a Storage Tank

Type: Compact Spring Supports
Material: A-36 Carbon Steel | HDG | Stainless Steel
Design: 0.25″ Movement (upward) | 5,000 lb. Load
Testing: Load and Travel Testing

These compact spring supports were custom designed to support a storage tank at a facility in Texas. The housing was fabricated from A-36 carbon steel and hot-dipped galvanized to protect them against corrosion. The disc springs are engineered using the stainless steel Belleville disc springs designed for large loads but small movements. In this case, the springs are designed to support a load of 5,000 lb. and movement of 0.25″ (upward). Each assembly underwent load testing prior to shipment.

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Big Ton Constant Supports Designed with Bronzphite® Slide Plates for Oil Refinery in China

September 25, 2017

Big Ton Constant Supports Designed with Bronzphite® Slide Plates for Oil Refinery in China

Type: Big Ton Constant Spring Supports
Material: Carbon Steel | HDG | Bronzphite® | Graphite
Design: 750°F | 1-1/2″ Total Travel | 29-1/2″ x 85-1/4″ x 34-1/2″ | 187,393 lb.
Testing: Load and Travel Testing

PT&P custom designed and manufactured big ton constant spring supports w/ bronzphite® slide plates for a 400 KTA light oil for a processing and utilization unit at an oil refinery in China. A total of four constant assemblies were fabricated from carbon steel and hot-dipped galvanized for extra protection against corrosion. The bronze plate acts as the bearing surface, supporting heavy loads, while the graphite inserts provide a solid, oil-free sliding surface. They are designed for operating temperatures up to 750°F and an operating load of 187,393 lb., with 1-1/2″ total travel. Load and travel testing was performed prior to shipment.

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U-Type Constant Spring Supports Designed for a Power Plant

August 20, 2017

U-Type Constant Spring Supports Designed for a Power Plant

Type: Constant Spring Supports
Material: Carbon Steel | HDG | PTFE, 25% Glass Filled
Design: 8,200 lb. Load | 11-1/2″ Total Travel
Testing: Standard Load and Travel Test

PT&P designed and manufactured 48 constant spring supports for a power plant in Mexico. The constants pictured above are Fig. 200 U-type constant spring supports fabricated from A-36 carbon steel and include PTFE, 25% glass filled slide plates bonded to the load flange. The supports are 39″ H x 26″ W x 80″ L and are designed for operating loads up to 8,200 lb., with a total travel of 11-1/2″. These are horizontal constants designed to support piping from below in conjunction with a pipe saddle. All the constants went through standard load and travel testing per MSS Standards prior to shipment.

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