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1,520 Spring Assemblies for a Chemical Plant

July 18th, 2003 No comments
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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Rotary Valve for a Manufacturing Facility

July 11th, 2003 No comments

Rotary Valve for a Manufacturing Facility

Rotary Valve for a Manufacturing Facility

Sweco Fab, Inc. recently fabricated a M-1318 Rotary Valve Assembly composed of a stainless steel hopper, double reduction gear, drive cover, and a sprocket & chain drive. The valve is powered by a 1/2 hp, 3 phase electric motor. This particular piece will be used in a plastic processing company. Rotary valves can be fabricated in different assembly formations and can be altered based upon customer needs.

Want to learn more about Sweco Fab and the products manufactured by Sweco? Instantly view a past Sweco webinar now!


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Categories: ASME/Miscellaneous Fabrication Tags:

PT&P Aids in the Immediate Replacement of over 160 Pipe Shoes

June 27th, 2003 No comments

PT&P Aids in the Immediate Replacement of over 160 Pipe Shoes

PT&P Aids in the Immediate Replacement of over 160 Pipe Shoes

PT&P was called on by an energy center in Oklahoma to inspect failing pipe shoes designed for temperatures ranging from 650 to 1065 °F supplied by another company.  After thorough inspection, PT&P’s field service representatives concluded that the problem was due to the existing pipe clamps’ inability to firmly grip the pipe during expansion. This exposed the pipes to atmospheric moisture, resulting in both heat loss and deterioration. To alleviate the situation, PT&P designed secured pipe clamps that were bolted and torqued such that the entire pipe shoe would move with the pipe’s expansion. PT&P’s field service team also provided on-site installation of the replacement pipe shoes. The entire process involved stripping of the existing damaged insulation, removal of the failing supports, and installation of new pipe shoes and insulation.

PT&P Aids in the Immediate Replacement of over 160 Pipe Shoes

Pipe Shoes in the Field

Over 160 pipe shoes were engineered, manufactured, and installed for this energy center. The fabricated pipe shoes, designed for pipe sizes ranging from 12 to 28″ in diameter, are equipped with special base plate and slide bearing plate combinations which allowed axial movement from 1/2″ to 7″ and lateral movement up to 10 1/2″. In addition, they were designed to support a maximum vertical and lateral load of 38,000 lb. and 7,600 lb. respectively.

Do you have a need for pipe shoes in your current or future project? Get pricing today!
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150 PSIG Heat Exchanger for a Chemical Process Research Lab

June 20th, 2003 No comments
150 PSIG Heat Exchanger for a Chemical Process Research Lab

150 PSIG Heat Exchanger for a Chemical Process Research Lab

Sweco Fab., Inc. recently designed and manufactured a 1 1/2″ diameter heat exchanger for a chemical process research laboratory.  This Heat Exchanger is fabricated from stainless steel, grade 316L, with a maximum allowable working pressure of 150 PSIG at 250°F. It was hydro-tested at 185 PSIG. Heat exchangers are widely used in refineries for multiple applications. Sweco Fab, Inc. can design and fabricate heat exchangers in different sizes and materials as per customer needs.

Want to learn more about Sweco Fab? Instantly view a past Sweco webinar today!


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PT&P Aids in the Construction of an Oil Refinery

June 13th, 2003 No comments

PT&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&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.

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


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Emergency Request for Types B & E Stainless Steel Constants

May 30th, 2003 No comments
Emergency Request for Types B & E Stainless Steel Constants

Emergency Request for Types B & E Stainless Steel Constants

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.

Do you require consants in your current or future project? Let us price them for you today!


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28" dia. Hotshoes for a Natural Gas Plant

May 16th, 2003 No comments
28" dia. Hotshoes for a Natural Gas Plant

28" dia. Hotshoes for a Natural Gas Plant

Piping Technology & Products, Inc. recently designed and manufactured twenty 28″ dia. Hotshoes (high temperature pre-insulated pipe supports) for a natural gas plant in Massachusetts. These supports are assembled with a 5″ thick high-density Calcium silicate insulation layer, in addition to stainless steel, Kaowool, and PTFE, 25% glass filled, slide plate materials. The supports are designed to support loads from 25 kips-50 kips at an operating temperature of 1800 degrees F. The shoes also allow for a travel of 7″ where applicable. PT&P also designed and fabricated rod hangers with variable spring supports for this project.

Do you have a need for hot shoes in your plant or refinery? Get pricing today!


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30" Diameter Spectacle Blinds for a Petroleum Plant in Texas

May 9th, 2003 No comments

30" Diameter Spectacle Blinds for a Petroleum Plant in Texas

30" Diameter Spectacle Blinds for a Petroleum Plant in Texas

Sweco Fab, Inc. recently manufactured Spectacle Blinds ranging in size from 28" to 30" for a petroleum plant in Texas. These Spectacle (Figure 8 Blinds) are rated for 300# service, and are fabricated from SA516 carbon steel, grade 70N.

Do you have a need for spectacle blinds in your plant or refinery? Get pricing today!

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Various Variable Support Assemblies for a Power Generation Facility

April 25th, 2003 No comments
Various Variable Support Assemblies for a Power Generation Facility

Various Support Assemblies for a Power Generation Facility

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.

Want to learn more about variable springs? Watch a past variable spring webinar today!


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17,000 lbs. Upthrust Constants for a Construction Site

April 18th, 2003 No comments
 17,000 lbs. Upthrust Constants for a Construction Site

17,000 lbs. Upthrust Constants for a Construction Site

 17,000 lbs. Upthrust Constants for a Construction Site

17,000 lbs. Upthrust Constant

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.

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


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Mailing: P.O. Box 34506, Houston, TX 77234-4506 Location: 3701 Holmes Road, Houston, TX 77051
Our Subsidiaries: U.S. Bellows: Metallic & Fabric Expansion Joints, Bellows
Sweco Fab: ASME Vessels, Pig Launchers, Spectacle Blinds
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