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  Experienced Manufacturer of Pipe Supports since 1978
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70,000 lb. Load Vertical C-Type Constants

December 13th, 2002 No comments

70,000 lb. Load Vertical C-Type Constants

70,000 lb. Load Vertical C-Type Constants

These 42 13/16″ x 79 5/8″ constants have a double suspension and are made from A36 carbon steel. They will each hold a total of 70,000 lbs. and are designed to move 8½ in. down. Our report generating testing was conducted after the correct load was set.

Do you see a need for constants in your current or future project? Get pricing now!


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Hydraulic Snubbers for a Construction Site

October 25th, 2002 No comments
Hydraulic Snubbers for a Construction Site

Hydraulic Snubbers for a Construction Site

Piping Technology & Products recently designed and manufactured three hydraulic snubbers for a construction site in Louisiana.

These snubbers, with an operating load of 3500 lbs., are 2.5 x 6 and allow for 4 of total travel distance. The lock-up velocity test was performed on these snubbers to make sure that at high rates of loading, especially impact, the snubber would provide very high resistance to movement. And, the drag test was performed to make sure that at low speeds they provide very low resistance to movement.

Do you see a need for hydraulic snubbers in your plant? Let us price them for you today!

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Variable Spring Supports for a Refinery in Texas

September 27th, 2002 No comments
Variable Spring Supports for a Refinery in Texas

Variable Spring Supports for a Refinery in Texas

Piping Technology & Products, Inc. designed and manufactured variable spring supports for a refinery in Forney, Texas.

The spring supports are made of carbon steel and have a length by casing diameter range from 9-3/16 by 8-5/8 to 53-11/16 by 12 ¾.  In order to insure the quality of the springs, compression tests were used with a load capacity of 21,500 pounds.

Need supports like these? Let us help serve your needs!

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Vertical F-Type Constants for Power Plant

July 19th, 2002 No comments
Vertical F-Type Constants for Power Plant

Vertical F-Type Constants for Power Plant

Piping Technology & Products custom designed and manufactured vertical F-type constants for a power plant in Connecticut.

The 100 type F is a vertical constant designed to support piping from below with minimum space usage. The dimensions of the constant are 26-5/8″ high, 10″ wide, and 17-9/16″ long with an operating load of 280 lbs.

This particular F constant, was unusual in that it was furnished with a vertical spring that attaches below the frame of the constant. In addition to a downward travel of 3″, the flange table shifts forward at 1-3/8″ to minimize axial movement.

A galvanized finish was applied to the constant to prevent corrosion. The constants can be bolted on or welded to the support or steel underneath.

Need constants for an upcoming project? Ask for pricing today!

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Big Ton Springs Equipped with Lifting Lugs

July 12th, 2002 No comments
Big Ton Springs Equipped with Lifting Lugs

Big Ton Springs Equipped with Lifting Lugs

Piping Technology & Products, Inc. specially designed and fabricated big ton springs equipped with side lifting lugs to support piping of a 102-megawatt, refinery cogeneration power plant in California.

Under typical circumstances, this type of job application would utilize variable spring hangers, but because of the restricted space, the hangers’ size would be too small to support a hot load of 19,068 lbs and cold load of 17,212 lbs. In order to satisfy both the required loads and space, PT&P engineers designed and fabricated figure 500 big ton springs equipped with side lifting lugs. The lifting lugs were attached to allow the big ton to suspend as a variable spring would in the field.

Are big ton springs a necessity for your next project! Request a quote today!

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Variable Springs to Meet Travels Needed to Support Furnace Tubes of a Hydrogen Reformer

July 5th, 2002 No comments
Variable Springs to Meet Travels Needed to Support Furnace Tubes of a Hydrogen Reformer

Variable Springs to Meet Travels Needed to Support Furnace Tubes of a Hydrogen Reformer

Variable Springs to Meet Travels Needed to Support Furnace Tubes of a Hydrogen Reformer

Custom Variables in the Field

Piping Technology & Products, Inc.  specially designed and fabricated hundreds of altered Type A variable spring hangers in order to accommodate the special travel and spring rate needed to support the furnace tubes of a hydrogen reformer in Venezuela.

In order to accommodate customer specified travel and spring rate, modified spring coils were required. With a travel of 8 7/8, the variable spring hanger casing lengths were increased from the standard size of 32 inches to over 6 feet long. The calculated spring rate is 79 lb/sq in for an operating load of 2,804 lbs. and installed load of 3,505 lbs.

The housings are coated with a heat resistant paint, which protects the spring coils from corrosion and high temperatures of the furnace area.

Want to learn more about variable springs? Visit our webinar archives today!



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Rods and Clevises for a Natural Gas Combined Cycle Facility

June 21st, 2002 No comments
Rods and Clevises for a Natural Gas Combined Cycle Facility

Rods and Clevises for a Natural Gas Combined Cycle Facility

Piping Technology & Products, Inc. designed and manufactured hundreds of hanger rods and clevises for a 1,250 MW natural gas combined cycle facility in Mississippi.

The rod and clevis components were made of various alloys (800H, F91, 316H, SA-387 Gr. 22) and ranged in sizes from 2″ to 4″ diameter. Taking into account the surrounding environment’s conditions, engineers designed the rods and clevises so that they can endure temperatures escalating to 1430º F. For the duration of a pull test conducted, the clevises and rods sustained loads up to 152,000 lbs. and there were no discrepancies.

Are rods and clevises on your checklist for an upcoming project? Request a quote today!

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4" Pig Launchers and Receivers for a Water Reclamation Plant

June 7th, 2002 No comments
4" Pig Launchers and Receivers for a Water Reclamation Plant

4" Pig Launchers and Receivers for a Water Reclamation Plant

Sweco Fab, Inc. manufactured 4″ pig launchers and receivers for a water reclamation plant in Savage, Maryland.

These launchers and receivers are to aid in the utilization of an oxidation ditch activated sludge process designed for nitrification / de-nitrification and phosphorous removal. The design consists of components such as T-bolt closures, side outlet tees and 4″, 150-psi flanges with protectors. After being built to ASME, Sect. VIII, Div. 1, the launchers and receivers were shop prime painted to prevent against corrosion.

Need pig launchers and/or receivers? Request a quote today!

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Special Vertical Type E Constant Spring Supports

April 26th, 2002 No comments
Special Vertical Type E Constant Spring Supports

Special Vertical Type E Constant Spring Supports

Piping Technology & Products, Inc. designed and manufactured special vertical type E constant spring supports for a power plant. These were designed and installed as pairs in a configuration similar to the typical G type constants. The advantage of using a pair of the special E rather than the conventional G type is that the total width is smaller as can be seen in Figure 1.

The constants were designed to support loads from 5,730 lbs to 10,690 lbs. They were fabricated from A36 Carbon steel. The dimensions of the individual constants are 60″ high, 16 1/2″ long, and 14″ in wide. The size of the supported pipe determined the width of the assembly. As with all constants built by PT&P, they were tested to verify that standard specifications for variation of load over the full range of travel were met.

Do you need constant spring supports for an upcoming project? Request a quote today!

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20" Stainless Steel Suction Strainer

March 22nd, 2002 No comments
20" Stainless Steel Suction Strainer

20" Stainless Steel Suction Strainer

Sweco Fab, the ASME fabrication shop of Piping Technology & Products, Inc., specially designed and manufactured two 20″ OD x 36″ long, suction strainers for a chemical plant in Louisiana.

The strainers, which were fabricated from SS32, each weigh 1,300 pounds. They were designed at 300 psig and 600° F and built to ASME code. In order to insure quality of the welds, PT&P’s Q.C. inspectors 100% x-ray tested butt welds of longitudinal seams and circumference seams, head to shell. Other pressure containment welds were dye penetrant examined. The unit, as a whole, was hydrotested at 390 PSIG.

Learn more about other Sweco Fab Inc. products in our webinar archives.



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Mailing: P.O. Box 34506, Houston, TX 77234-4506 Location: 3701 Holmes Road, Houston, TX 77051
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