F-Type Constant Spring Supports Designed and Manufactured for Gas Plant

April 20, 2020

F-Type Constant Spring Supports Designed and Manufactured for Gas Plant

Type: F-Type Constant Spring Supports
Size: 36″- 87″ Length | 24″ Height
Material: A36 Carbon Steel | HDG | SS Slide Plates
Design: 13,500 lb. Load | 250°F | 17.5″ Travel
Testing: Q.C. Inspection | Load and Travel Tests

PT&P custom-designed multiple horizontal F-Type constant spring supports for a gas plant in Saudi, Arabia. The constants are provided with stainless steel slide plates and custom-designed for 17.5” total travel. They are fabricated from carbon steel, hot-dipped galvanized and painted to withstand a highly corrosive environment. The assemblies are 24” in height, 36” – 87” in length, designed for an operating temperature of 250°F and loads up to 13,500 lb. Load tests and dye penetrant testing was conducted prior to shipment.

Constant Spring Supports Designed for up to 9-1/2” of Travel

November 18, 2019

 

Constant Spring Supports Designed for up to 9-1/2” of Travel

Type: Constant Spring Supports
Size: 29″ L x 14″ W x 18-3/4″ H |  76″ L x 26″ W x 37-3/8″ H
Material: A36 Carbon Steel | HDG | Neoprene
Design: 124 lb. to 10,570 lb. Load | 3-1/2″ to 9-1/2″ Travel
Testing: Q.C. Inspection | Load and Travel Tests

PT&P designed and manufactured U-Type and D-Type constant spring supports for a facility in Mexico. The constants frames are fabricated from A36 carbon steel and have a hot-dipped galvanized coating. The spring coils are alloy steel and have a neoprene coating. The dimensions range from 29” L x 14” W x 18-3/4” H to a max of 76” L x 26” W x 37-3/8” H. The 200-U-Type constants were supplied with graphite plates on the load table. The supports range in load from 124 lb. to 10,570 lb. The total travel ranged from 3-1/2” to 9-1/2”. Standard Q.C., load and travel tests were performed.

Custom Designed Constant Spring Supports for a Chemical Plant in Singapore

December 10, 2018

Custom Designed Constant Spring Supports for a Chemical Plant in Singapore

Type: Constant Spring Supports
Size: 15-¼” W x 17″ H x 46″ L with 9-¼” OD
Material: Carbon Steel | Hot-dipped Galvanized
Design: 2,379 lb. Load | 10″ Upward Movement

PT&P custom designed and manufactured constant spring supports for a chemical plant in Singapore. The constants are fabricated from A36 carbon steel A36, and include alloy coil springs. The dimensions are 15-¼” W x 17″ H x 46″ L with 9-¼” OD. They were designed for an operating load of 2,379 lb. and movement of 10” upward. These constants were designed specially with “telescoping cans” and painted to protect against corrosion. Standard load and travel tests were performed prior to shipment.

Constant Spring Supports Custom Designed for a Power Plant in Egypt

October 9, 2018

Constant Spring Supports Custom Designed for a Main Stream System at a Power Plant in Egypt

Type: Constant Springs & Alloy Clamp Assemblies
Size: 48″ H x 57″ L x 24″ W | 36″ dia. Clamp
Materials: Carbon Steel with HDG Finish | Alloy
Design: 1070°F | 7-1/2″ Total Travel | 24,712 lb. Load
Testing: Load and Travel Test

PT&P custom designed and manufactured constant spring supports for a main stream system at a power plant in Egypt. The constants include alloy clamps designed for a 900 mm (approximately 36” dia.) pipe. They are 48” H x 57” L x 24” W and designed for an operating temperature of 1070°F, with 7-1/2” total travel from the cold position. The constants are fabricated from A36 carbon steel and include a hot-dip galvanize protective coating. They are designed for an operating load of 24,712 lb. The constants have been modified to accommodate a specialized spring coil and modified casing. Standard travel and load tests were performed prior to shipping.

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.

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.

Constant Spring Support Assemblies Designed for a Chemical Plant in New Jersey

January 23, 2017

Constant Spring Support Assemblies Designed for a Chemical Plant in New Jersey

Type: Constant Spring Supports
Size: PTP 200 C-Type Double Suspension
Material: Hot-dipped Galvanized Carbon Steel | Epoxy Coated Springs
Load: 8,000 lb. – 19,000 lb. | Upward Movement: 6″ – 9″
Testing: Standard Load and Travel Test

PT&P designed twelve constant spring support assemblies for a chemical plant in New Jersey. The assemblies will be used as replacements in a recuperator up-leg and down-leg application in conjunction with custom cross-over supports previously fabricated by PT&P. Physical sizes of these constant assemblies range from 18-1/2″ x 22″ x 64″ to 18-1/2″ x 26″ x 83″. Operating loads range between 8,000 lb. – 19,000 lb. and each allows for upward movement between 6″ – 9″. The spring coils are coated with epoxy instead of the standard neoprene coating. Standard load and travel tests were completed prior to shipment.

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

August 22, 2016

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PT&P designed and fabricated U-Type constant spring support , with PTFE, 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 10,350 lb. load. The constant underwent standard load testing prior to shipment.

Constant Spring Supports Designed for a Power Plant in New Mexico

March 7, 2016

Constant Spring Supports Designed for a Power Plant in New Mexico

PT&P fabricated constant support assemblies for a power plant in New Mexico. The constant assemblies will be used in conjunction with structural supports also provided by PT&P. Operating loads range between 7,000 lb. and 20,000 lb. and designed for movements from 10-1/2″ to 12″. All thread rods were coated with rust prevention compound and the constants were painted with Intergard® 475 HSS. The travel stops are wired to the constants frame and can be reused to lock the constant, preventing travel during plant maintenance or shutdowns. Standard load and travel tests were completed according to MSS standards prior to shipment.

Register for the next Webinar: Engineered Spring Supports (Practical, Hands-on Approach)

November 12, 2015

This webinar is over… view the recording at: https://pipingtech.com/resources/media/webinars/

Live Webinars are worth 1 PDH Credit for TX Professional Engineers

Engineered Spring Supports

Learn how the theoretical applications of spring supports are put into use in the real world. We will start with a review of the working principles of both variable and constant springs. See how brand new spring looks at delivery, and review installation guidelines. Learn the key points to review through the total installation process and subsequently when the springs are in operation. See how to determine if springs need adjustments, re-calibration, refurbishment or replacement. View in field examples, shutdown and isolation procedures. See the selection process required when there are significant changes to the operating condition.

The featured presenter, Jerry Godina has over 16 years experience as a pipe support designer and manages PT&P’s engineer training development program. He also inspects existing supports, consults on site remediation projects and oversees installation on a regular basis.

Custom F-Type Constant Spring Supports for Oil Refinery

November 6, 2015

Custom Constant Spring Supports for Oil Refinery

PT&P designed 100-F type constant spring supports for an oil refinery in Alabama. These custom constant spring supports are 32” x 12” x 23.5” and designed to support an operating load of 650 lb. with 14” of total travel. The constants are fabricated from A36 carbon steel and the coil is from 5160H alloy material. Standard load and travel testing were completed to ensure the quality and performance of these constants.

Constant Spring Supports Designed for a Steam Methane Reformer

May 10, 2015

Constant Spring Supports Designed for a Steam Methane Reformer
PT&P manufactured Fig. PTP 100-E constant spring supports for a steam methane reformer plant project in Thailand. The constant springs are designed for a pipe operating temperature from 650°F to 1250°F and an operating load of 3,355 lb. with a movement of 13″ upward. The constants are fabricated from carbon steel and painted with an epoxy for high temperatures. Standard load and travel test were completed prior to shipment.

Custom Vertical Constant Hangers

April 6, 2010
Custom Vertical Constant Hangers
Custom Vertical Constant Hangers

PT&P manufactured constant spring supports to custom dimensions of 21″ height x 13″ width x 7.5″ depth. The total travel is 7″, with an actual travel of 3.5″ in both up and down directions. The rated load is 180 lb. and they will be used to support pipe lines for a power plant in Louisiana.

Do you see a need for constant hangers in your plant? Get pricing today!
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78″ Long 200 C-Type Constant Spring Assembly for a Power Plant

January 12, 2010
78" Long 200 C-Type Constant Spring Assembly
78" Long 200 C-Type Constant Spring Assembly
78" Long 200 C-Type Constant Spring Assembly

Each constant spring support is designed to carry a 27,200 lb. load and provide 13″ downward travel. Special spring coils are used in order to reduce the entire length of the pipe hanger assembly. The frame and all internal moving components’ geometry are optimized as well to reduce the overall size. In total, the frame and casing combination measure 78″L x 21½”W x 33¾”H. The customer requested frame modification for special lug locations.

Do you require constant spring assemblies for your plant? Get pricing today!
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80" U-Type Constants for a Power Plant

October 10, 2007
80" U-Type Constants for a Power Plant
80" U-Type Constants for a Power Plant

– U-Type constant spring supports for a power plant in Thailand
– Fabricated from A36 carbon steel
– Dimensions = 25″W x 28″H x 80″L
– Load = 24,000 lb.
– 3″ of total travel upward
– Standard load and travel testing was performed

Want to learn more about constant springs? Instantly view a constant webinar today.


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U-Type Constants for an Oil Refinery in Taiwan

May 10, 2006

 

U-Type Constants for an Oil Refinery in Taiwan
U-Type Constants for an Oil Refinery in Taiwan
U-Type Constants for an Oil Refinery in Taiwan
Constants in Assembly

These Figure 200 U-Type horizontal upthrust constants are designed to support piping from below. They are fabricated from carbon steel. These constants were also hot dipped galvanized and then specially painted. In addition, they are able to handle loads of up to 13,600 lbs. Each constant has a capacity of 4 total travel. They range from 55 to 62 long. Load testing and external inspections were completed to ensure the quality of these constants.

Want to learn more about constants? View a constant spring webinar today!


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Horizontal Upthrust Constants for a Power Plant

March 8, 2006

 

Horizontal Upthrust Constants for a Power Plant
Horizontal Upthrust Constants for a Power Plant
Horizontal Upthrust Constants for a Power Plant
Multiple Constants During Inspection

The horizontal upthrust constants (Fig. PTP200-U) were fabricated from carbon steel and chrome-moly for a Heat Recovery Steam Generator. The constants range in sizes PTP-200 size 3 to 65 and weigh from 24 lbs to 1,300 lbs. They support loads of 100 lbs to 8,100 lbs. The constants support pipes and equipment subjected to vertical movement due to thermal expansion at locations where transfer of stress to other supports or equipment can be critical. Horizontal upthrust constants are utilized in areas where horizontal travel is unacceptable. Standard testing was completed for performance and quality assurance.

Want to learn more about constant springs? View a constant webinar today!



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March 2006 News

March 4, 2006

Piping Technology & Products, Inc. Performed Field Services for a Power Generating Plant in Texas

PT&P was contracted to assist in the determination of pipe support maintenance at a power plant in Texas. The constant effort support springs with loads of excess of 9,500 lbs and the variable spring supports with loads of 450 lbs were marked for needing attention.

Inspecting Variable Springs for Performance
Cleaning Variable Spring Unit
Inspecting Variable Springs for Performance
Inspecting Variable Springs for Performance

PT&P’s objectives were to:

* Evaluate the pipe supports
* Determine state of performance
* Provide a plan of action
* Train personnel on-site to perform adjustments and replacement of supports or support components
* Provide final inspection of modified supports

After Cleaning & Preparation of the Constant
After Cleaning & Preparation of the Constant
Final Assembly with Added Slide Plates
Final Assembly with Added Slide Plates

The pipe supports needing attention could not be set to the required installation position. A plan was initiated to recondition some of the support components such as turnbuckles and rods. This would allow a greater range of field adjustment to the pipe supports. During a planned shut-down, PT&P Field Service Units returned to the site to modify the existing supports. The initial phase of the modifications included bracing the piping in order to isolate and lock the supports in position. Then, they were disconnected from the system and modifications to the assemblies were completed. Afterwards, the supports were reinstalled and any necessary adjustments were completed. A total of eight pipe supports were modified or adjusted.

Roller Bearing Needing Maintenance
Roller Bearing Needing Maintenance
Restored Roller Bearing
Restored Roller Bearing

Do you see a need for a routine inspection of your plant? Contact us for a quote today!
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Upthrust 200-U Type Constants for an Oil Refinery

February 28, 2006

 

Upthrust 200-U Type Constants for an Oil Refinery
Upthrust 200-U Type Constants for an Oil Refinery
Upthrust 200-U Type Constants for an Oil Refinery
Upthrust 200-U Type Constants for an Oil Refinery

The upthrust constants (PTP Fig. 200-U) were fabricated from A36 carbon steel. Weighing at 4,150 lbs each, they measure 94” long, 27” wide, and 43” tall. They support loads from 90,700 lbs to 93,000 lbs with 4” of vertical travel. In addition, they are custom designed with extra supporting points for heavier loads. They are used to support the piping system from beneath the pipeline. Upthrust constants only allow for vertical travel and are used where horizontal travel is unacceptable. Standard load and travel testing was completed to assure quality and performance.

Do you require u-type constants in your plant or refinery? Let us price them for you now!
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Constants for an Oil Refinery in Texas

November 16, 2005
Constants for an Oil Refinery in Texas
Constants for an Oil Refinery in Texas

These constant hanger assemblies are used to support piping systems subjected to vertical movement. They are capable of supporting loads ranging from 3,000 lbs to 63,000 lbs with a travel range of 5″. They have dimension between 73″ long, 36″ tall, and 23″ wide to 80″ long, 27″ tall, and 12 3/4 ” wide. Standard testing was performed for quality assurance.

Constants for an Oil Refinery in Texas
Constants for an Oil Refinery in Texas

Do you see a need for constant supports in your refinery? Let us price them for you today!
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