Custom "Mini" Big Ton Spring Supports Designed for a Centrifugal Fan in an Chemical Refinery

May 26, 2013

Custom &Quot;Mini&Quot; Big Ton Spring Supports Designed For A Centrifugal Fan In An Chemical Refinery

PT&P custom designed “mini” big ton spring supports to support a large centrifugal fan at a chemical refinery in Texas. They are designed to support a total weight of 33,000 lb. within a maximum space envelope of 4″ wide x 16″ long x 8″ tall. As a result, these mini big-tons were fabricated using coils which could be placed in parallel within their respective frames. Four of the unites were comprised of four inner coils nested inside four outer coils to produce an operating load of 4,478 lb. and an overall spring rate of 2,740 lb./in. The smaller load capacity units were configured of four individual coils in parallel with an operating load of 3,735 lb. and a spring rate of 2,300 lb./in. The frame, load flange and all internal components were fabricated from carbon steel. The spring coils were fabricated from ASTM A-5160 spring steel. All supports were tested through their total working range to confirm load capacity and functionality.

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Cryogenic Trunnions with Permali® Blocks Designed for Ethylene Loss Recovery Lines

May 20, 2013

Cryogenic Trunnions With Permali&Reg; Blocks Designed For Ethylene Loss Recovery Lines

PT&P designed cryogenic trunnion supports for ethylene loss recovery lines at a plant in Texas. The trunnions were fabricated from 2″ dia. stainless steel pipes and have a maximum height of 3′. They include 6″ x 6″ permali® blocks measuring 2″ thick each. The permali® block isolator is a laminated phenolic material from layers of wood impregnated under vacuum and heat with synthetic resin. The temperature range for these supports is from ambient to -300°F.

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72" Dia. Cryogenic Pipe Supports Designed for an LNG Facility

May 6, 2013

72&Quot; Dia. Cryogenic Pipe Supports Designed For An Lng Facility

Custom designed cryogenic pipe supports were fabricated for an LNG facility in Africa. The shoes range in diameter from 30″ to 72″, 45″ to 88″ in height, 42-1/2″ to 85-1/2″ in width, and 28″ to 33″ in length. The insulation is a high density polyurethane foam (PUF) ranging from 5″ to 6″ thick. The shoe and bearing plates were fabricated from carbon steel with a HDG finish. The jacket was fabricated from aluminized steel and includes a vapor barrier.


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Pre-Insulated Pipe Supports for both Cryogenic and High Temperature Applications

April 25, 2013

This Webinar is over, view the recording at: Webinars


Cold ShoesExplore how Polyurethane foam is produced, from mixing polyols and isocyanates to inspecting the final product. Learn about anchor shoe testing, lateral load testing, compressive strength testing, and axial load testing. Increase your understanding of the value-added services that are offered by PT&P, and rest assured that your Pre-Insulated Pipe Support needs can be covered by our 24×7 web-based emergency services, providing field service, and quick-turn around time when you need it most.

The featured presenter, Jerry Godina has over 15 years experience as a pipe support designer and manages PT&P’s engineer training development program. He also inspects existing supports, consults on site remediation projects and oversees installation on a regular basis.


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C-Type Variable Spring Support Assemblies Designed for an Oil Sands Mine

April 21, 2013

C-Type Variable Spring Support Assemblies Designed For An Oil Sands Mine

PTP-2 160 C-Type variable spring support assemblies were designed and fabricated for an oil sands mine in Canada. The variables are 8″-12″ diameter, 16″ to 32-1/2″ overall length, and designed for an operating load of 5590 lb. with an upwards travel of 0.787″. The variables were fabricated from carbon steel with a hot-dipped galvanized finish and standard load and travel testing was completed prior to shipment.

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Custom Sway Brace and Variable Spring Assemblies Designed for an Aerospace Development Facility

April 8, 2013

Custom Sway Brace And Variable Spring Assemblies Designed For An Aerospace Development Facility

These custom designed sway braces and variable spring assemblies were designed for hanger duct work in an aerospace development facility. The assemblies measure 67-1/2″ long with a 14-1/8″ O.D. The variables are a modified F-type spring with a pivoting base and non-standard coil combination, including a nested spring design. The assemblies include fully adjustable travel stops and custom end brackets. They are fabricated from carbon steel and designed for load ranges between 1100 lb. and 9250 lb. with a spring rate of +/- 2.78″.

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30" Dia. Adjustable Pipe Saddle Supports Designed for an Oil Refinery

March 10, 2013

30&Quot; Dia. Adjustable Pipe Saddle Supports Designed For An Oil Refinery

These custom adjustable pipe saddle supports were designed for an oil refinery in Michigan. They will support 24″ and 30″ diameter pipes and range in height from 40″ to 42″. The pipe saddles can be vertically adjusted by turning the middle section of the seamless pipe and the base plates have been pre-drilled to accept anchor bolts. They are fabricated from carbon steel with a red oxide finish to protect against corrosion and were shipped within two weeks.

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47 Hold-Down Pipe Clamps Designed for a Coal Fired Power Plant

February 25, 2013

47 Hold-Down Pipe Clamps Designed For A Coal Fired Power Plant

PT&P designed and fabricated forty-seven hold-down pipe clamps for a coal fired power plant in Louisiana. The hold-downs are fabricated from carbon steel and range in size from 2″ to 10″ in diameter. The HD-3 is an arrestor type hold down used when there is very low thermal movement. Its radius is lined with a belting material that is well designed to absorb shock from vibration.

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8-Part Webinar Series: How Piping Design & Analysis Influences Pipe Support Selection & Design

This series is now a course offered through the University of Houston… view more details at

Piping SystemOur technical experts take you through piping, design considerations, effects on overall configuration, preliminary piping design, initial layout, the total system, introduction to pipe stress analysis, detailed piping design, and how all of this influences pipe support and pipe hanger design.

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