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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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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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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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.
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.
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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.
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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Within a two-week span, PT&P designed and fabricated eight Stainless Steel, grade-304, types B & E Constants for a marine plant. These constants have a travel of 1 1/2 – 5″ and are specified to carry 50 – 1540 lbs load. Stainless steel was requested due to the corrosive nature of the environment. PT&P also manufactured nine Carbon Steel types B & E Constants for this project.
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Piping Technology & Products, Inc. designed and manufactured 85 support assemblies for a power generation facility in Georgia. These assemblies consisted of Variable and Constant Assemblies and structures made with carbon steel and alloy material. The variable spring hanger assemblies have standard three-bolt clamps and lug attachments for the existing pipes. These variable spring hangers accommodate operating loads varying from 8,000 to 18,000 lb. and 1-1/2 ” of upward travel. PT&P also manufactured a Fig.43 (heavy duty yoke u-bolt) for a 14″ diameter pipe. Components of the Fig. 43 include yoke, U-bolt, shield, and lug. The structure (beam, plate, angle, and tube steel) was painted green as per the customer’s specifications.
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Piping Technology & Products, Inc. designed and manufactured sixty nine Upthrust Constants for a construction site in Chad, Africa. They range in constant size from 31-61 and are composed of A36 carbon steel. The applicable loads and travel for these constants are from 1,700 lbs.-17,000 lbs. and 3”-8”, respectively. The installed height for this job was much higher than our standard constants, so we had to customize them. By extending the height of our standard constant with an additional angle we were able to meet the installed height.
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Piping Technology & Products, Inc. designed and manufactured several variable assemblies with pre-insulated pipe clamps for a chemical company in Texas. These assemblies are constructed of galvanized carbon steel hangers and hardware with Marinite® insulation. The fabricated clamps range in size from 10″ to 30″, insulation thickness of 1″ to 8″ and with spring hanger sizes 80-180 standard, double, and triple variable spring hangers.
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Piping Technology & Products, Inc. recently designed and manufactured 200 U-Type upthrust constants for a geothermal plant in Hawaii. The constant pictured on the left has frame dimensions of W 40″ x H 75″ x L 142″, a constant load of 9,888 lb. to 10,239 lb. and a design travel of 46″. It also utilizes rollers and PTFE, 25% glass filled slide plates to reduce the friction resulting from axial movements. All the constants in this project are composed of A36 carbon steel. Standard load testing and travel testing were conducted prior to shipment.
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