PT&P custom-designed constant spring support assemblies for heat recovery steam generator at a combined-cycle power plant. These power plants utilize gas turbines, steam turbines, heat exchangers along with other components to make use of “exhaust waste” for a more efficient system. These 200-F Type constants were fabricated from A36 carbon steel and include a hot-dipped galvanized finish. The spring coils are formed from alloy steel and are neoprene coated. They are designed for an operating load for up to 886 lb., and up to 6″ of maximum travel. They are placed beneath the unit being supported and allow for movement in the vertical direction (up or down). The dimensions are 13″ W x 31″ L x 18-1/2″ H. Standard load and travel tests along with a quality control inspection were conducted prior to shipment.
Tag: Constant Spring Supports
Constant Spring Supports for a Leading Energy Transportation and Midstream Service Provider
PT&P custom-designed constant spring support assemblies for an energy facility in Canada. These 100–E Type (layout B) constants were supplied with an extended hanger rod and fabricated from A36 carbon steel with 5160 alloy steel coil springs. They are designed for an operating load from 2,370 lb. to 9,240 lb., and movements from 1-1/2” to 8-1/4”. The dimensions are 12” W x12” L x 30” H and 14” W x 19” L x 53” H. Load and travel tests along with a quality control inspection were conducted prior to shipment.
U-Type Constant Spring Supports with Stainless Steel Slide Plates
PT&P custom-designed U-type constant spring supports for an oil refinery in Texas. Constants can be utilized in refineries within blocks such as hydrogenation units, naphtha desulfurization units, and fluid catalytic crackers. The spring’s frame is manufactured from A36 carbon steel and hot-dipped galvanized to protect against corrosion. For instances where there was axial and lateral movement, 240 Gr. 304 slide plates were installed on the load flanges of the constants. The constants supplied are designed for an operating load ranging from 1,085 lb. up to 17,480 lb. and horizontal travel from 2.5” to 6”. The overall dimensions range in size from 17” H x 20” W x 31” L to 28” H x 26” W x 66” L. Load and travel tests per industry standards were performed prior to shipment.
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.
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
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
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
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.
Constant Spring Supports for an Oil Refinery in Texas
Type: | Constant Spring Supports |
Material: | Carbon Steel w/ HDG Finish |
Design: | 4,000 lb. Load | 3 1/2″-9 1/2″ Vertical |
Testing: | Load and Travel Tests |
PT&P custom designed and manufactured ten 200 U-Type constant spring supports with slide plates for a Oil Refinery in Texas. They are fabricated from A36 carbon steel with an HDG finish for plates, angles, and cans. Its dimensions are 31″ in height and 52″ in length with 19” in width. They are designed for a movement of 3 ½” up to 9 ½” and an operating load of 1100 lbs up to 4800 lbs. They were custom designed to match the box dimensions of a competitor. The units had a Standard Load Test performed prior to shipment.
Constant Spring Support Assemblies for an LNG Plant in Central Africa
Type: | Constant Spring Supports |
Material: | A36 Carbon Steel w/ HDG Finish |
Design: | 1,790 lb. Load | 8″ Vertical |
Testing: | Load and Travel Tests |
These 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 20.5” in height, 38.75” in length, and 13” in width. They’re designed for a load up to 1790 lb. and a vertical movement range of 8″. All constants were fabricated from A-36 carbon steel and hot-dipped galvanized. Each assembly went through standard load and travel testing per MSS Standards. The constants were shipped within 6 to 8 weeks to an LNG plant in Africa.
U-Type Constant Spring Supports for a Plant in Texas
Type: | Constant Spring Supports |
Size: | 35 7/16″ Height & 75 3/4″ Length |
Material: | A36 Carbon Steel with HDG/304 Stainless Steel |
Design: | 9″ Total Travel at 979°F & Operating Load 6183 lbs. |
Testing: | Hydrotested at 6744 lbs. |
These 200 U-Type constant spring supports with slide plates were designed by PT&P for a plant in Texas. They are fabricated from A36 carbon steel with an HDG finish and the slide plates manufactured from 304 stainless steel. Its dimensions are 35 7/16″ in height and 75 3/4″ in length. They are designed for 9″ of total travel at 979°F and an operating load of 6183 lbs. The units were hydrotested at 6744 lbs. prior to shipment.
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.
Constant Spring Supports Design and Application Webinar
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How to Remove Travel Stops from a Constant Spring Hanger
Constant Spring Supports Product Video
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
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
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
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
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.