Blog Category: ENGINEERED SPRING SUPPORTS

950 lb. Load PTP- 6 Type F Variable Springs for an Offshore Oil Rig
March 19, 2004
950 Lb. Load Ptp- 6 Type F Variable Springs For An Offshore Oil Rig
950 lb. Load PTP- 6 Type F Variable Springs for an Offshore Oil Rig

Piping Technology and Products, Inc. recently designed and fabricated two 950 lb. load PTP-6 type F size 90 variable springs for an offshore oil rig.  These variable springs have an overall height of 33 1/2″ and are designed for a travel range of 4″. Each variable consists of an 8 5/8″ dia. casing, a 13″ square base plate, an 8″ load flange and three spring coils with a 7 1/2″ working range. All components are fabricated from carbon steel and are hot-dipped galvanized.

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49,000 lb. Load Constant Springs for a Power Plant
March 5, 2004

49,000 Lb. Load Constant Springs For A Power Plant
49,000 lb. Load Constant Springs for a Power Plant

Piping Technology and Products, Inc. custom designed and manufactured four double lug suspension PTP 100-C size 84 constants for a power plant in South Carolina.  These constants are designed for a vertical travel range of 5″ and an operating load capacity of 49,000 lb. They are fabricated out of A36 carbon steel and weigh 2,900 lb. each. Prior to shipping standard load and travel tests were performed on these 20″x 35″x 80″ constants to ensure quality.

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24,500 lb. Load PTP- 8 Type C Variable Spring Assemblies
February 26, 2004

 

24,500 Lb. Load Ptp- 8 Type C Variable Spring Assemblies
24,500 lb. Load PTP- 8 Type C Variable Spring Assemblies

Piping Technology and Products, Inc. designed and manufactured four PTP-8 Type C variable spring assemblies for a power plant in South Carolina.  These variable spring assemblies with an average overall length of 87″ are fabricated from carbon steel. Each pipe hanger assembly consists of a variable spring, a rod, a clevis and hex nuts. The springs are designed for operating loads ranging from 22,500 lb. to 24,500 lb. and a total travel of 5″. For quality assurance, the spring coils are inspected and tested individually for proper operation.

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Furnace Spring Assemblies up to 13,000 lbs. for a Chemical Refinery
January 9, 2004
Furnace Spring Assemblies Up To 13,000 Lbs. For A Chemical Refinery
Furnace Spring Assemblies up to 13,000 lbs. for a Chemical Refinery

Piping Technology and Products, Inc. designed and manufactured furnace spring assemblies for a chemical refinery in Saudi Arabia.  Each pipe hanger assembly consists of a variable spring, rod, clevis, hex nuts, and pipe attachments. Unlike other variable springs which are designed to have bolted housings, these furnace springs are designed for spring coils with a customer specified spring rate installed in a welded housing. The sizes of these Fig. PTP-2 and Fig. PTP-4 ranged from 90-170, with a total travel of 1 1/4″ to 5″, and loads varying from 850 lbs to 13,300 lbs.

Furnace Spring Assemblies Up To 13,000 Lbs. For A Chemical Refinery
Furnace Spring Assemblies up to 13,000 lbs. for a Chemical Refinery

Prior to the final welding, trial fit-up and cycle test were performed to ensure unrestrained movement throughout the designed travel range. The spring assemblies were then calibrated to determine the exact spring rate prior to shipping.

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9200 lb. Load Type “E” Constant Hanger Assemblies
December 12, 2003
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.

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PTP-6 Carbon Steel Variable Springs
November 7, 2003
Ptp-6 Carbon Steel Variable Springs
PTP-6 Carbon Steel Variable Springs

PT&P recently designed and manufactured PTP-6 Type G variable springs in size PTP 6-00-G for a power plant project in Colorado.  These variable springs are constructed from carbon steel with movement ranging from 1” to 2” and loads of 73 lbs and 52 lbs, respectively. They were tested prior to shipping for load and movement performance by using calibrated load cells.

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950 lb. load C-type Constants
September 26, 2003
950 Lb. Load C-Type Constants
950 lb. load C-type Constants

PT&P recently designed and manufactured sixteen PTP-200 C-type constants modified to fit in constricted areas near a furnace of a chemical facility.  These constants are designed to travel from 5 1/2” to 19” and are specified to carry loads ranging from 245 to 924 lbs. They were fabricated from A36 plates with 4140 pins. Due to the proximity of the pipes and other equipment, the front part of the constant frame was cut to allow the pipe to move freely. Load and travel testing was performed to ensure quality and precise performance.

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2,650 lb. load C-Type Constants
2,650 Lb. Load C-Type Constants
2,650 lb. load C-Type Constants

Piping Technology and Products, Inc. recently fabricated 22 Carbon Steel PTP 200-C type Horizontal & PTP 100-C type Vertical Constants with sizes from 3 to 27.  The load capacity of the constants spans between 215 to 2650 lbs., with a travel ranging from 1” to 4”.  The three bolt clamps are fabricated from stainless steel material A 240 Gr. 304 for 4″ to 8″ dia. pipes.  The rod and turnbuckle were shortened on two of the constants in order to accommodate situations of small rod take out. Standard load and adjustment testing was performed.

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1,520 Spring Assemblies for a Chemical Plant
July 18, 2003
1,520 Spring Assemblies For A Chemical Plant
1,520 Spring Assemblies for a Chemical Plant

PT&P recently manufactured 1,520 PTP-2 and PTP-4 spring hanger assemblies designed specifically for a furnace application. These custom variable springs have welded components as opposed to bolted components found in standard assemblies. Due to the space limitation within the furnace, the spring coils were set in a welded housing which allows for the springs to be closely oriented within a smaller spatial envelope. The pipe hanger assemblies are made from carbon steel, consisting of variable spring, rod, and riser clamp components. Instead of galvanizing, the assemblies were coated with a red-oxide primer due to the high temperature operating conditions of the furnace. This prevents the possibility of molten zinc (from the galvanizing process) contaminating the furnace tubes.

1,520 Spring Assemblies For A Chemical Plant
1,520 Spring Assemblies for a Chemical Plant

The springs are designed for loads of 143 to 660 lbs. and for total travel ranging from 3/4 to 2″. Each assembly was pre-assembled to ensure free movement throughout the spring’s travel range before welding the bottom closure plate. Prior to shipment, all assemblies were calibrated to determine the exact spring rate and then were set to the customer’s designated cold load position. These springs are then located and installed into the furnace based on the spring rate.

Do you see a need for spring assemblies in your piping system? Get a quote today!

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PT&P Aids in the Construction of an Oil Refinery
June 13, 2003

Pt&Amp;P Aids In The Construction Of An Oil Refinery
PT&P Aids in the Construction of an Oil Refinery

Piping Technology & Products, Inc. has designed and manufactured over 177 tons of supports for the Chad/Cameroon Development Project in Chad, Africa. Adjustable Base Supports designed to support pipe size ranging from 3 to 18″ in diameter were one type of the many supports fabricated for this project.

Pt&Amp;P Aids In The Construction Of An Oil Refinery
Pipe Stands

Each of the hot-dipped galvanized pipe stands has an 8″x8″ base plate and a midrange height of 12″. The pipe stands allow for a maximum travel of +/- 3″. These supports provide for easy adjustment in the field when supporting pipe trunnions on concrete pads or foundations. In addition, these pipe stands have a major advantage when the exact installation heights are not known at the remote job site.

Other supports including constants and variables spring hangers, rigid rod hangers, structural steel, FRP pads, and pre-insulated pipe supports were also manufactured in a range of different specifications and materials.

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