F-Type Variable Spring Supports Designed for a Petrochemical Plant in Canada

May 18, 2020

F-Type Variable Spring Supports Designed for a Petrochemical Plant in Canada

Type: F-Type Variable Spring Support Assemblies
Size: Heights up to 12-3/4”
Spring Casing Diameters from 6-5/8” to 8-5/8”
Base plates from 9″x 9″ to 13-1/4” x 13-1/4″
Design: Operating Temp.: -49°F to 122°F
Operating Loads from 697 lb. to 6093 lb.
Movements of 0.04″ to 0.2”
Material: Hot-dipped Galvanized Carbon Steel
Testing: Load & Travel Test |  Q.C. Inspection

Piping Technology and Products, Inc. recently designed and manufactured F-Type variable spring supports with internal load columns for a petrochemical plant in Canada. The variables are fabricated from carbon steel that is able to accommodate low temperatures (A516-GR. 70N). The operating temperature ranges from -49°F to 122°F while supporting operating loads from 697 lb. to 6093 lb. and movements of 0.04″ to 0.2”. They are designed to accommodate installed heights up to 12-3/4”, with spring casing diameters from 6-5/8” to 8-5/8”, along with base plates from 9″x 9″ to 13-1/4” x 13-1/4″ for installing either by bolting or welding in the field. Load and travel tests, along with visual Q.C. inspections were performed before shipment.

Variable Spring Supports Designed for a Highly Corrosive Environment in Peru

July 1, 2019

 

Variable Spring Supports Designed for a Highly Corrosive Environment in Peru

Type: Variable Spring Supports w/ PTFE Slide Plates
Size: PTP-4 | 9.5″ – 11.5″ Height
Design: 1/8″ Upward & 3/16″ Downward Travel
Material: HDG Carbon Steel | Gloss Aliphatic Polyurethane Topcoat | PTFE, 25% Glass Filled Slide Plates
Testing: Standard Load Testing & Q.C. Inspection

Piping Technology & Products, Inc. recently designed and fabricated F-type variable spring supports for a plant in Peru. The variables are fabricated from carbon steel, hot-dipped galvanized and a gloss aliphatic polyurethane topcoat was applied for corrosion protection. PTFE, 25% glass filled, slide plates are bonded to the top of the load flange to reduce the friction caused by lateral movement. The variables range from 9.5″ to 11.5″ in height and are designed for a travel range of 1/8″ upward to 3/16″ downward. To ensure quality, standard load testing was performed prior to shipping.

Variable Spring Hangers Designed for a Plant in Texas

April 22, 2019

Variable Spring Hangers Designed for a Plant in Texas

Type: B-Type Variable Spring Supports
Size: PTP 100 & 200 | 3′ – 8′ ft. Height
Design: 4,000 lb. – 17,000 lb. Loads
Material: HDG Carbon Steel | Neoprene Coated Springs
Testing: Standard Load Test | Q.C. Tests

Piping Technology and Products, Inc. recently designed and fabricated B-Type variable spring supports for a plant in Texas. The operating loads range from 4,000 lb. to 17,000 lb. The variable springs are fabricated from galvanized carbon steel, have neoprene coated steel spring coils, and are designed to operate in environments up to 750°F. They have an overall height range from 3 ft. to 8 ft″. To ensure quality, standard load tests were performed prior to shipment.

Variable Springs for a Propane Dehydrogenation Unit in Texas

November 5, 2018

Variable Spring Supports for a Propane Dehydrogenation Unit in Texas

Type: Variable Spring Supports
Size: Accommodate Elevation Difference up to 11′-5″
Material: Carbon Steel | Hot-dipped Galvanized
Design: 20,000 lb. Load | 4,700 lb./in. Spring Rate

PT&P designed and manufactured over 50 variable spring supports for a propane dehydrogenation unit in Texas. The spring cans, rods, welded beam attachments, turnbuckles and clevises are fabricated from hot-dipped galvanized carbon steel. The variables can accommodate an elevation difference up to 11’-5” from the bottom of the steel to the connection of the pipe. They were designed for an operating load of 20,000 lb., a spring rate of 4,700 lb./in. and 0.007” upward movement. Standard load testing was conducted prior to shipping.

F-Type Variable Spring Supports with Graphite Slide Plates Designed for an Oil Refinery

September 24, 2018

F-Type Variable Spring Supports with Graphite Slide Plates Designed for an Oil Refinery

Type: Variable Spring Supports with Graphite Slide Plates
Materials: CS | HDG | High Heat Aluminum Finish | Graphite
Load Range: 420 lb. to 7650 lb. | 0.65″ Upward Movement
Design: 700°F Temperature | Q.C. & Load Tests

PT&P custom designed an F-type variable spring supports with graphite slide plates for an oil refinery in California. Each assembly is equipped with round base plates (instead of the standard square plates), and are designed for temperatures up to 700°F. The spring cans are designed for a load range from 420 lb. to 7,650 lb. and movements up to 0.65” up. They are finished with high heat aluminum due to the temperature requirements. O.C. inspections and load tests were conducted prior to shipment.

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.

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.

F-Type Variable Springs for a Refinery in Oklahoma

June 26, 2017

F-Type Variable Spring Cans for a refinery in Oklahoma

Type: Variable Spring Supports
Size: 70 7/8″ tall and 17 3/4″ wide
Material: Carbon Steel and PTFE Slide Plates
Design: 30,980 lb. load/2,083 lb. spring rate
Testing: 35,000 lb hydrotest

PT&P manufactured variable spring supports for a refinery in Oklahoma. These F-Type PTP-6 spring cans are 70 7/8″ tall and 17 3/4″ wide. They are completely fabricated from carbon steel with PTFE slide plates welded on the load flange and internal guide. They are designed for an operating load of 30,980 lb. .with a spring rate of 2,083 lb./in. and 0.49″ of movement. These variables were hydrotested with a load of 35,000 lb. prior to shipment.

Variable Spring Supports Designed for a Furnace in Trinidad

February 21, 2017

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 springs rate of 84 lb./in. They are fabricated from carbon steel with a red oxide primer coating to protect against corrosion. Customer specifications required a modified, installed height, while maintaining the spring rate, operating load and install load. In order to accomplish this, PT&P designed, manufactured and attached, to each spring, a pedestal to accomplish the increased installed height.

PT&P Variable Spring Supports

January 10, 2017

Variable Spring Hangers Designed for an Ammonia Plant

January 9, 2017

Variable Spring Hangers Designed for an Ammonia Plant

Type: B-Type Variable Spring Hanger
Size: PTP-2 Standard Variable Spring
Material: Hot-dipped Galvanized Carbon Steel
Design: 0.955″ Downward Movement | Cold Load: 12,183 lb. | Hot Load: 14,723 lb.
Testing: Hydro-load Test: 15,750 lb.

PT&P designed and fabricated variable spring hangers for an Ammonia Plant in Louisiana. This B-Type PTP-2 variable hanger is fabricated from carbon steel and hot-dipped galvanized to protect against corrosion. The variable is designed for 0.955″ of downward movement and an installed load of 12,183 and an operating load of 14,723 lb. This variable included a 1″ forged steel clevis and the assembly was tested at a hydro-load of 15,750 lb.

Variable Spring Supports Designed for a Furnace Application in Oklahoma

September 26, 2016

Variable Spring Supports Designed for a Furnace Application in Oklahoma

Type: Variable Spring Supports
Design: 1,765 lb. Load | +/- 5% Spring Rate
Material: Carbon Steel with Red Oxide Primer
Testing: Standard Spring Rate & Calibration Tests

PT&P custom designed variable spring supports for a furnace application at a Nitrogen Facility in Oklahoma. The furnace springs are fabricated from carbon steel and painted with a red-oxide primer to help prevent corrosion. The spring supports are designed to support loads up to 1,765 lb. With a spring rate calibrated to be within +/- 5% of the theoretical value.

Variable Spring Supports Product Video

August 10, 2016

Big Ton Spring Supports Designed for Propane Dehydrogenation Facility

June 27, 2016

Big Ton Spring Supports Designed for Propane De-Hydrogenation Facility

PT&P custom designed big ton spring supports for a propane dehydrogenation facility in Texas. The components within these assemblies include the spring housing, load columns, travel stops, spring coils and lifting lugs. While both assemblies measure 42” x 24” x 26-1/2”, they were each modified based on independent specifications for operating loads and movement. The first will accommodate a load of 94,261 lb. and 0.085” of movement, while the second will accommodate a load of 102,219 lb. with 0.08” of movement.

This type of support is ideal for applications, such as pressure vessels, that combine very heavy loads with thermal expansion because of the stability they provide. The big tons were tested in the load cell to insure proper operation throughout the entire working range of the coils.

300 Variable Spring Supports Designed for a Furnace Application at a Methanol Processing Facility

April 25, 2016

300 Variable Spring Supports Designed for a Furnace Application at a Methanol Processing Facility

PT&P designed and fabricated 300 variable spring supports for use in a furnace within a methanol processing facility in Mexico. We manufactured the ”housing” of these variable springs using seamless pipe (in order to prevent the springs’ coils from rubbing against the ”weld seam” of a standard pipe) so that the exact spring rate (+/- 5%) can be calculated without discrepancies or variations. The reason that an accurate spring rate is important is because furnace springs function as a ”scale” in order to determine the weight of the radiant coils within the unit. These springs are coated with red oxide primer to protect against corrosion. We manufactured these furnace spring assemblies for an operating load of 1,036 lb. and a movement up to 8 1/2″. Each spring is traceable to test data and tagged with its’ unique spring rate along with other standard information use for identification.

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

October 19, 2015

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

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

PT&P custom designed variable spring supports and hangers for a furnace application in an ammonia plant. The furnace springs are fabricated from carbon steel and painted with a red-oxide primer to help prevent corrosion. The spring supports are designed to support loads ranging from 400 lb. to 12,500 lb. Over 150 spring coils underwent calibration test prior to fabrication and insertion into the variable support housing to ensure variance of less than 5%.

F-Type Variable Spring Supports Designed for a Chemical Processing Plant

May 23, 2015

F-Type Variable Spring Supports Designed for a Chemical Processing

PT&P manufactured F-type variable spring supports for a chemical processing plant in Texas. The variables are designed with an internal guide and for a movement of 0.09″. They are designed for a 5,350 lb. cold load and 5,450 lb. hot load. Because these springs had to be capable of withstanding a hydro-test in excess of 33,000 lb. (which substantially exceeded the standard maximum hydro-test of 18,000 lb.), special collars were used in conjunction with the standard travel stops. These collars are designed to absorb the large hydro load by relying on the high strength characteristics of the load flange and housing components of the assembly while essentially bypassing the threaded internal components.

G-Type Variable Spring Supports Designed for a Coker Replacement Project

April 12, 2015

G-Type Variable Spring Supports Designed for a Coker Replacement Project

PT&P fabricated PTP-6 G-type variable spring supports for a coker replacement project in Kansas. 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. They are 50″ in length, designed for an operating load of 15,000 lb. and fabricated from carbon steel with a hot-dipped galvanized finish. All variable assemblies underwent standard load and spring testing prior to shipment.

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.

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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