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Constant Spring Supports — The Pipe Supports Blog

B-Type Constant Spring Supports Designed for a Hydrocracker Application

October 20th, 2014 Comments off

B-Type Constant Spring Supports Designed for a Hydrocracker Application

PT&P manufactured B type constant spring supports for a hydrocracker application at a refinery in Port Author, TX. These custom designed constants are 83″ x 41″ x 20″, and designed to support a 53,000 lb. riser pipe through two trunnions. The constants are designed for an operating load of 26,700 lb. with 10-1/2″ of total travel. They are fabricated from A36 carbon steel and underwent standard load and travel testing prior to shipment.

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

March 23rd, 2014 Comments off

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.

G Type Constant Spring Supports Designed for a Power Plant in Mississippi

January 23rd, 2014 Comments off

G Type Constant Spring Supports Designed for a Power Plant in Mississippi

PT&P custom designed 16 G type constant spring supports for a power plant in Mississippi. The constants are comprised of two standard constant spring housing sub-assemblies joined together with an intermediate bridge assembly. They also include welded beam attachments, rods and hex nuts. The assemblies are designed to support pipes ranging from 80″ – 96″ in diameter. Standard load and travel tests were performed prior to shipment.

100-B Type Constant Spring Supports Designed with Double Transverse Lugs for a Refinery in Mexico

August 16th, 2013 Comments off

100-B Type Constant Spring Supports Designed with Double Transverse Lugs for a Refinery in Mexico

These 100-B Type vertical constant spring supports were designed with double transverse lugs for a refinery in Mexico. The constants were fabricated from A-36 carbon steel and they range in size from 23-1/4″ to 26-5/8″ in height, 50″ to 78″ in length and 18-3/8″ to 18-3/4″ in width. They are designed for operating loads ranging from 8,000 – 27,000 lb. and upward movements ranging from 3″ to 7″. The double transverse lugs allow the entire constant to swivel with the rod. Standard load and travel tests were performed prior to shipment.

Stainless Steel Constant Spring Supports for an Oil Refinery in the Virgin Islands

December 17th, 2012 Comments off

Stainless Steel Constant Spring Supports for an Oil Refinery in the Virgin Islands

PT&P custom designed  C-type constant spring supports for an oil refinery in the Virgin Islands. They are fabricated entirely from 304 stainless steel to support piping in a highly corrosive environment. The design loads are 7,000 lb., 9,500 lb., and 11,000 lb. with movements of 2-1/2″ and 3″. The constants measure 29″ L x 22″ W x 20″ H. Standard load and travel testing was conducted prior to shipment.

Over 40 Constant Spring Supports Designed to Support Production Pipes

November 12th, 2012 Comments off

Fig. 200 U-Type Constant Spring Support

Over 40 constant spring supports were custom designed to support production pipes in an oil refinery. This picture shows a Fig. 200 U-Type constant spring support.

Fig. 100 B-Type Constant Spring Support

This picture shows a Fig. 100 B-Type constant spring support.

The constants range in size from 22″ to 30″ in height, 35″ to 85″ in length, and 12″ to 31″ in width. Their load capacities range from 1,800 lb. to 20,800 lb. with a vertical movement ranging from 7″ to 11-1/2″. All constants were fabricated from A-36 carbon steel and painted with a 3-coat paint system. Each constant went through standard load and travel testing per MSS Standards prior to shipment.

200 E-Type Horizontal Constant Spring Supports for a Fired Heater Radiant Manifold

October 15th, 2012 Comments off

200 E-Type Horizontal Constant Spring Supports for a Fired Heater Radiant Manifold

These 200 E-Type horizontal constant spring supports are fabricated from A-36 carbon steel with a hot-dipped galvanize finish. The pins made for constants operation are A-322-4140 high strength carbon steel. The constants range in size from 22-3/4″ to 26-1/4″ heights, 60″ to 90″ lengths, 18″ width, and 19-1/2″ to 23-1/2″ in coil housing diameters. They are designed for 23,160 lb. to 33,700 lb. loads and 6-1/2″ to 14″ of total travel. A total of sixteen assemblies were custom designed for a fired heater radiant manifold. Each pipe hanger assembly went through standard load and travel testing prior to shipping.

Special E-Type Constant Springs Designed to Support Boiler Trim Piping

June 4th, 2012 Comments off

Custom PTP-100 E-Type Constant Spring Supports

Special PTP-100 E-Type constant spring supports were custom designed to support boiler trim piping for steam generating in an upper thermal power unit. The constants measure 5-3/8″ W x 16-3/4″ L x 23-1/2″ H. They are highly customized to meet the customer’s space requirements and operating method to eliminate the hanger rod from shifting, allowing it to move only vertically while going from cold to hot position. Standard constant assemblies of this size, are about 50% larger and the hanger rod would shift horizontally as the travel reaches the hot position. These constants are designed for loads ranging from 72 lb. to 92 lb. and movements ranging from 10″ to 11-1/2″ downward. Standard load and travel tests were conducted prior to shipment

Stock Upthrust Constants Modified with an Auxillary Platform

January 16th, 2012 Comments off

200 U-Type Constant Spring Supports Designed for Large Spring Coils.

These 200 U-Type constant spring supports were modified to increase their installed height by adding a secondary plate and angles, which will be welded to the structural beam. The constants range in size from 25″ to 27″ in height, 52″ to 67″ in length, and 25″ in width. Their load capacities range from 10,300 lb. to 13,000 lb. with vertical movement ranging from 3″ to 4-1/2″. All constants were fabricated from A-36 carbon steel, and went through standard load and travel testing per MSS Standards prior to shipment.

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U-Type Constant Springs Custom Designed for Large Travel for an Oil Refinery

September 19th, 2011 No comments

U-Type Constant Springs Custom Designed for Large Travel for an Oil Refinery

These figure 200 U-type constant springs were fabricated from A-36 carbon steel and range in size from 30-1/2″ to 41″ in height, 25″ to 31″ in width, and 68″ to 80″ in length. These are horizontal constants designed to support piping from below where the base plate is bolted directly to the top of the steel or the foundation using anchor bolts. Loads range from 9,000 lb. to 42,000 lb., and vertical movements range from 6″ to 11″. All the constants went through standard load and travel testing per MSS Standards prior to shipment.

U-Type Constant Springs Custom Designed for Large Travel for an Oil Refinery

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