List | Piping Technology & Products, Inc.

Special Application Variable Springs and Constant Supports

March 19, 2003

The three pictures above show materials being crated for shipment overseas. At the top center are pallets of variable springs designed for 10” of movement and 1000 pound load. This unusual combination of requirements is satisfied by an unusually long coil. This project required 700 of these variables. At the bottom center are constant supports designed for 14” of movement with loads near 2000 pounds. This large movement, unusual for this load, requires the large arc seen in the frame of the constant body. Two hundred of these constants were required. These spring supports are painted with a shop prime.

Do you see a need for variable or constant springs in your piping system? Get pricing today!

Pipe Shoes and Stand Assemblies for a Cross-Generating Station

March 7, 2003

Piping Technology & Products, Inc. recently designed and manufactured 46 of these support assemblies for a cross-generating power station in South Carolina. These pipe shoes and assemblies are composed of carbon steel and accommodate pipe with diameters ranging in size from 18”-32”. All of these components are strong enough to support maximum installed loads of 8,000 lbs.

Do you have a requirement for pipe shoes? Get pricing today!

3 Custom Built Disc-Spring Arrestors with Clamps

February 28, 2003

The disc-spring arrestors provide resistance by utilizing disc springs (sometimes referred to as Belleville® washers) stacked in a series within the assembly housing to produce a specific spring rate. By utilizing large (over 8 diameter) disc springs, very high spring rates may be obtained. The arrestors are capable of operating in both tension and compression.

The housing, end bracket, and extension pieces of the spring arrestor are made form A-36 carbon steel. The disc springs are made from ASTM A-1075 spring steel. One clamp (for design temp. of 688 degrees F.) was made from carbon steel and two clamps (for design temp. of 1054 degrees F.) were fabricated from A-387 GR.22 Chrome-Moly steel.

The diameter of each disc spring was 9 with a thickness of 1. The overall pin-to-pin dimension for the assemblies varied with a minimum of 35 and a maximum length of 57. The maximum length that can be accommodated is 120. The clamps were made for 18 and 30 diameter pipes.

The shock arrestor will see a maximum operating load of 43,000 lbs. The spring rate of each arrestor was designed at 40,000 lb./in. The spring arrestors are designed for a maximum displacement of 2. The arrestors were tested to verify spring rate and to confirm the operation of the pipe hanger assembly.

Do you have a need for spring arrestors or pipe clamps in your current or future project? Get pricing today!

18,500 lb. Load Constants for a Construction Site

February 21, 2003

The constants are made from A36 carbon steel and range in height from 4′-0 to 5′-0 and C-C dimension of 7′-0 to 8′-4. They have a load capacity of 12,000 lbs. to 18,500 lbs. and a 4-5 travel capacity. Load setting and travel testing was conducted on the constants to ensure they met the customer’s requirements.

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

Variable Springs with Permanent Adjustment Travel Stops

February 7, 2003

Piping Technology & Products designed and manufactured these variable springs with permanent adjustment travel stops for a refinery in Texas.

These types of travel stops are used to allow ease of installation, provide a means for field load adjustment within the working range of the spring, and allow the springs to be “locked” easily whenever they are taken out of service for shutdowns or refurbishment of the system.

For this requisition, a total of 23 variable springs with adjustable travel stops were fabricated. The springs are made from carbon steel and the adjustment rods are made from A-325 high strength bolt material. The springs ranged in size from PTP-1-60-F to PTP-2-180-F size spring. The largest springs were set for an operating load of 12,900 lbs. and a hydrotest load of 14,000 lbs. and a maximum travel of ½. All of the springs were tested in the load cell to insure proper operation. Per the customer’s request, these springs were supplied at an expedited delivery of 3 weeks.

Want to learn more about variable springs? View a past variable spring webinar instantly!

Sway Struts for a Construction Company

January 31, 2003

Piping Technology & Products, Inc. recently designed and manufactured Sway Struts, PT&P Fig. 2110, with clamps for a construction company in Indiana.

The overall length of the support assemblies range from 24” to 60” and have loads ranging from 3,500 to 11,630 lbs. The strut assemblies are made of carbon steel and are used to restrain movement of piping in one direction while providing for movement due to thermal expansion or contraction in another direction.

Do you require sway struts in your current or future project? Get pricing today!

Standard Pipe Shoes for a Power Plant

January 24, 2003

Piping Technology & Products, Inc. designed and manufactured these Fig. 1400 pipe shoes for a power plant in Canada.

These Fig. 1400 pipe shoes are a combination of PT&P Fig. 900 and 400. These shoes are particularly made from carbon steel and graphite with 4” B.O.P (bottom of the pipe). They are used to control pipe movement by guiding. These shoes also prevent vertical and horizontal movement and allow axial movement. They are mainly used in power plants or areas where there is cyclical filling and emptying of the pipe.

Do you see a need for pipe shoes in your piping system? Let us price them for you today!

58,000 lb. Load Variable Spring Assemblies for a Power Plant

January 17, 2003

Piping Technology & Products, Inc. designed and manufactured two custom built variable spring assemblies using heavy duty spring coils and fabricated hardware components.

The loads, as specified by the customer, were greater than the maximum operating loads for our largest (PT&P size 220) standard variable springs. In order to meet the customer’s requirements, a custom variable spring was designed and fabricated using a larger spring coil normally used only in constant spring assemblies.

The specially fabricated variable spring was 20 in diameter with a standing height of 51 and the hanging components (rod, turnbuckle, clevis) were 3 1/2 diameter pieces. The spring rate was 3232 lb./in. All the pipe hanger assembly components were made from carbon steel.

The installed (cold) load was 58,000 lbs. and the operating (hot) load was 61,700 lbs. The calculated movement from cold to hot was 1 1/8 down. The variable spring was tested in the load cell to insure proper operation and also to set the cold load to the specifications provided by the customer.

Do you see a need for variable springs in your piping system? Get pricing today!

Bronzphite® Plates for a Construction Company in Dubai

January 10, 2003

These ½ x 7 x 12 Bronzphite® plates were bolted to a 2 ¾ x 11 x 16 backing plate with a 5mm recess. The recess allowed the Bronzphite® plates to be countersunk and bolted to the backing plates. The Bronzphite® plates were designed to withstand 14Mpa working compression and a maximum temperature of 230˚F.

Do you have a need for slide plates in your piping system? Let us price them for you today!

51,000 lb. load Hot Shoes for a C4 Olefins Complex

December 27, 2002

Piping Technology & Products, Inc. designed and manufactured 44 shoes consisting of six guided and axial hot shoes, 10 guided hot shoes, and 28 sliding hot shoes. The materials used were calcium silicate, Marinite®, stainless steel plates, and PTFE, 25% glass filled. These shoes were designed for 8″ pipe with 7″ insulation with a load capacity of 5,100 lbs.

Do you require hot shoes in your piping system? Get pricing today!

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