Constant Assemblies Custom-Designed for Hot Service at a Leading Plastic Manufacturing Plant in North Carolina

August 4, 2020

Constant Assemblies Custom-Designed for Hot Service at a Leading Plastic Manufacturing Plant in North Carolina

Type: Custom-Designed Constant Spring Supports
Size: PTP-100 B-Type | 16” x 24” x 30”
Material: A36 Carbon Steel | Hot-dipped Galvanized| Epoxy Coating
Design: Load Range: 2,280 lb. to 7,143 lb. | 2″ Total Travel
Testing: Q.C. Inspection | Load and Travel Tests

PT&P custom-designed constant spring supports with assembly rods for a manufacturing company. The constants were fabricated from A36 carbon steel, hot-dipped galvanized, and painted with an epoxy coating. The assemblies are designed for an operating load ranging from 2,280 lb. to 7,143 lb. with 2” of total travel. Standard load and travel test and Q.C. inspection were completed prior to shipment to North Carolina.

Constant Spring Supports Designed for LNG Service in Louisiana

July 7, 2020

Constant Spring Supports Designed for LNG Service in Louisiana

Type: B-Type Constant Spring Supports
Size: 11-5/8 W x 41” L x 19” H to 21” W x 88” L x 38” H
Material: A36 Carbon Steel | Hot-dipped Galvanized
Design: Operating Load Range: 3,170 lb. to 48,400 lb.
Movement of 3” to 8”
Testing: Q.C. Inspection | Load and Travel Tests

PT&P manufactured B-type constant spring supports for LNG service in Louisiana. These constants are fabricated from A36 carbon steel with alloy steel 5160 spring coils. The constants are designed for an operating load range of 3,170 lb. to 48,400 lb., and movements from 3” to 8”. They range in size from 11-5/8 W x 41” L x 19” H to 21” W x 88” L x 38” H. To avoid delivery delay, a standard frame was paired with an oversized coil and coil housing. The lugs were rotated 90 degrees from the standard to allow the hanger to swing beyond +/- 4” of side-to-side swing. Standard load and travel tests were performed prior to shipment.

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.

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.

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.

C-Type Constant Spring Supports for a Refinery in Texas

July 10, 2017

C-Type Constant Spring Supports for a Refinery in Texas

Type: Constant Spring Supports
Size: 25″ in Height x 17-38″ in Length x 11-5/8″ in Width
Material: A-36 Carbon Steel with HDG Finish
Design: 981 lb. to 1828 lb. load | 2-1/2″ to 3″ Vertical Movement Range
Testing: Standard Load and Travel Testing per MSS Standards

Piping Technology & Products, Inc. designed and manufactured C-type constant spring support assemblies for a refinery in Texas. The constants are 25″ in height, 17-3/8″ in length, and 11-5/8″ in width. Their load capacities range from 981 lb. to 1828 lb., with a vertical movement ranging from 2-1/2″ to 3″. All constants were fabricated from A-36 carbon steel with a hot-dipped galvanized finish, and underwent 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 Design and Application Webinar

August 11, 2016
This webinar is over, view the recording in the webinar archives

Constant Spring Support

This Webinar will focus on the different types of constant spring supports. Learn about the special features available, in addition to the design of a constant support. View how the different cam/coil configurations produce a unique response to an applied load. Discover the step by step process used to size a spring for your application. Learn about the different attachments, testing, and installation and maintenance procedures. View examples of failed supports provided by our Field Service Division and learn why they failed and how to prevent it. Gain knowledge of the valuable tips used when deciding to adjust or replace a constant spring support, as well as shutdown and isolation procedures.

The featured presenter, Jerry Godina has over 15 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.

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.

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 Designed Upthrust Constant Spring Supports

March 20, 2015

Custom Designed Upthrust Constant Spring Supports

PT&P designed Fig. PTP 200-U upthrust constant spring supports modified to accommodate an increased installed height. PT&P fabricated these constant assemblies from A36 carbon steel. They were designed for temperatures up to 185°F, and a load of 15,737 lb. The constants are capable of a downward total travel of 2″ and are 61″ L x 25″ W x 39″ H. Standard load and travel tests were conducted prior to shipment.

U-Type Constant Spring Supports Designed to Support Ducts in an Acid Plant

March 23, 2014

U-Type Constant Spring Supports Designed to Support Ducts in an Acid Plant

U-Type constant spring supports were designed to support ducts in an acid plant. The constants are fabricated from carbon steel, galvanized and painted for extra protection against corrosion. The U-type constants are designed to support piping from below. The base plate is 25-7/8″ wide and bolted directly to the top of the steel or floor. The assemblies measure 84″ in length and 22-1/2″ in height. They only have vertical movement subjected by 6-1/2″ total upwards travel and are capable of supporting a 13,489 lb. load. The constants underwent standard spring testing prior to shipment.

New Webinar: Pipe Supports for Beginners- Constants & Variables

December 6, 2012

View the recording at: Webinars

This webinar series was created to explain the basic principles of different types of pipe supports in the simplest way possible. It is geared towards “non-engineers” who want to have a better understanding of pipe supports. This particular presentation will give you a brief introduction to pipe supports and will then solely concentrate on constant and variable spring supports. It will explain the various designs, applications, and details of each support using simple terms and a lot of visual aids. The presentation will conclude with general guidelines of the maintenance and ordering process of constants and variables.

How To: Remove Travel Stops from a Constant

October 8, 2010

Check out this video of our field service manager instructing how to remove travel stops from a constant effort support. This procedure is a very critical and necessary step in the installation of constant spring supports.

More helpful instructional videos are available on our website!

Custom U-Type Constant Spring Supports with Slide Plates

June 15, 2010
Custom U-Type Constant Spring Supports with Slide Plates
Custom U-Type Constant Spring Supports with Slide Plates

PT&P fabricated 12 constant spring supports of various sizes with PTFE, 25% glass filled slide plates. The smallest constant is 38.25″ length x 13″ width x 28″ height, and the largest is 52″ length x 19″ width x 28″ height. The designed loads vary from 13,264 lb. to 15,962 lb. and the total travel range is 2″ to 3″.

Do you require constants or slide plates in your piping system? Get a quote today!

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