Piping Technology and Products Logo

Piping Technology & Products

Loading
 
  Experienced Manufacturer of Pipe Supports since 1978
Call Us: (713) 731-0030 Toll-Free: (800) 787-5914   Se habla español
 
Constant Spring Assemblies — The Pipe Supports Blog

Custom U-Type Constant for an Oil Refinery

July 13th, 2010 No comments

U-Type Constant Spring Support for an Oil Refinery

This custom designed carbon steel constant measures 19 5/8″ wide, by 59 1/2″ tall, by 52 1/8″ long. It is designed for a 500 lb. load with a total travel of 17 1/2″. The support frame was increased in height to meet a large take-off of 59 1/2″. The constant spring will be used to support piping in an oil refinery.

Do you have a need for custom constant springs? Let us price them for you today!
request-a-quote

Custom Constant Spring Hangers and Pipe Clamps

June 8th, 2010 No comments
Custom Constant Spring Hangers and Pipe Clamps

Custom Constant Spring Hangers and Pipe Clamps

The constant spring hangers are manufactured from A36 carbon steel and have custom 4-bolt pipe clamps due to heavy loads. The dimensions are 40″ length x 18″ width x 85″ height and are designed for a 1,784 lb. load with 10″ of travel. The constants will be used to support radiant inlet manifolds and have a unique paint applied due to the highly corrosive condition. The entire pipe hanger assembly went through load and travel testing prior to shipping.

Want to learn more about constant springs? Instantly view a past constant webinar!
access-our-webinar-archives

Constant Spring Assemblies Custom Designed for Replacement of Failed Supports

December 15th, 2009 No comments
Constant Spring Assemblies Custom Designed for Replacement of Failed Supports

Constant Spring Assemblies Custom Designed for Replacement of Failed Supports

Constant Spring Assemblies Custom Designed for Replacement of Failed Supports

Failed Constants

This initial order included PT&P’s field services division testing and recalibrating four constant spring supports not manufactured by PT&P. A preliminary inspection of the original constants revealed deformations in the spring coil housing. This is indicative of defective coils; therefore, before any load tests were conducted, inspection windows were cut into the spring coil cover to confirm the initial hypothesis (Figure 2). Inspection of the coils revealed complete deterioration with broken and missing sections of the spring. Subsequent inspections of the remaining three assemblies illustrated similar failures. The original constants were then disassembled (Figure 3) to determine the feasibility of replacing only the coils while utilizing the original frame/cam components.

Constant Spring Assemblies Custom Designed for Replacement of Failed Supports

Failed Constants

The original spring coils were different in spring rate, length, and diameter than any standard PT&P coils; therefore, multiple coils were required to duplicate the overall function of the existing coils. Using multiple coils also required modifications to the existing frames. In an effort to expedite the overall delivery schedule, entirely new constant springs were manufactured in one week (Figure 1). The four new constants measure 53″ long, 13″ wide and 86″ tall. They have a 18-3/4″ diameter spring coil with a coil housing of 20-1/2″ diameter. The new constant assemblies are designed for an operating load of 13,332 lb., travel of 13″ upward and 2″ downward for a combined total travel of 15″. A load test throughout the total travel range was performed on each constant.

Want to learn more about constant springs? Watch a recording of a past constant webinar today!
access-our-webinar-archives

Custom Designed and Manufactured Box Design Constants

April 29th, 2005 No comments
Custom Designed and Manufactured Box Design Constants

Custom Designed and Manufactured Box Design Constants

Custom Designed and Manufactured Box Design Constants

Front View

These constants are manufactured from A36 carbon steel and measure 11″ x 29″ x 61″. Total weight of each constant is 430 lb. The loaded capacity is 2,160 lb. and the maximum travel is 15″. Standard load and travel test were done to ensure quality and performance. The turn around for this product was four days.

Custom Designed and Manufactured Box Design Constants

Side View

 

 

 

 

 

 

Do you require custom constants for your piping system? Get a price quote today!
request-a-quote


9200 lb. Load Type “E” Constant Hanger Assemblies

December 12th, 2003 No comments
9200 lb. Load Type “E” Constant Hanger Assemblies

9200 lb. Load Type “E” Constant Hanger Assemblies

PT&P designed and manufactured forty PTP 200- type “E” constant hanger assemblies with pipe sizes ranging from 36” to 62” for an oil refinery in Canada.  These constant hanger assemblies are designed to support and allow vertical movement of the field pipe during thermal expansion. The constants have a load capacity of 2800 lbs. to 9200 lbs. and a 3”-7” travel range. To assure quality, standard load testing was performed on the constants prior to shipping. The assemblies’ components consist of a constant load hanger, a rod and a clamp. The constants are fabricated from ASTM A36 carbon steel and the rod and clamp were manufactured from ASTM A240, Gr. 304 stainless steel.

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



access-our-webinar-archives



C-Type Constants

May 3rd, 2002 No comments
 C-Type Constants

C-Type Constants

Piping Technology & Products, Inc. designed and manufactured 70 horizontal, C-type constants for a furnace application located in Venezuela.

 C-Type Constants

C-Type Constants

The sizes of the Figure 200 constants ranged from 32 to 64, with a total travel of 4.5 to 10.5, and loads varying from 1,149 to 5,149 pounds. The constants are provided with a custom designed PT&P Figure 270, which consists of a double lug horizontal traveler versus a single lug. Within the horizontal travel, the constants are designed to handle 8 of horizontal movement and support a rod that remains vertical throughout pipe movement.

Learn about other types of constants by visiting our webinar archives!



access-our-webinar-archives



Mailing: P.O. Box 34506, Houston, TX 77234-4506 Location: 3701 Holmes Road, Houston, TX 77051
Our Subsidiaries: U.S. Bellows: Metallic & Fabric Expansion Joints, Bellows
Sweco Fab: ASME Vessels, Pig Launchers, Spectacle Blinds
 Pipe Shields: Pre-Insulated Pipe Supports, Slides, Guides & Anchors

Fronek Anchor/Darling
: Snubbers, Sway Struts & Sway Braces
Phone: (713) 731-0030 Toll-Free: (800) 787-5914 FAX: (713) 731-8640 info@pipingtech.com

©2017 Piping Technology and Products, Inc. All Rights Reserved. Contact Us | Privacy Policy