Piping Technology and Products, Inc. recently fabricated and designed several sliding cold shoes with lateral restraint for a river site in Georgia. The sliding cold shoes have a frame of A36 carbon steel. These were designed to support pipes of 14 to 36 in diameter, insulated with 4.5 to 5 in thick layers of polyurethane foam.

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Piping Technology & Products, Inc. recently custom designed and manufactured seventy-seven cold supports for company in Georgia. The pipe sizes for these cold supports are 3” NPS to 30” NPS. Total weight of the supports supplies 15000 lbs. The product can support temperatures from -300 F to 150 F. The cold supports were manufactured from Polyurethane, carbon steel and stainless steel.

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PT&P recently designed and manufactured over 1,000 Coldshoes for an LNG Plant in Egypt.  These shoes are designed to support loads up to 75,000 lbs. at an operating temperature of -350°F. They are customized to fit pipe sizes of 20”, 24”, 30”, and 36”. All Coldshoes are composed of stainless steel with a Micarta® insulator.  Micarta® is a woven glass fabric laminated with epoxy resin. It is extremely high in mechanical strength, has low moisture absorption and dissipative factors, and has superior electrical characteristics which are exhibited over a wide range of temperatures and humidities.

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The photo above shows three different supports fabricated by Piping Technology & Products, Inc. for a petrochemical facility in Indonesia. The smallest support, (lower right) show the interior layer of polyurethane projecting out of the outside layer. This allows the pipe insulation to overlap when installed. These units provide insulation between the very cold fluid inside the pipe and the hot, humid conditions outside. They also support the weight of the pipe and allow for movement due to thermal expansion and contraction. Micarta was used for certain supports which require greater strength.

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The photographs above show insulated pipe supports designed for a system being installed in a very cold climate in Russia. The insulating components are inside next to the pipe. The outside components are galvanized steel. In the foreground of the photo at the right are two fixtures which were built for load testing these pipe supports by applying known forces with a hydraulic load cell. Piping Technology & Products, Inc., fabricated prototype units for a Houston Engineering Firm and tested the units. After successful tests a number of similar units were built for shipment to Russia.

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The pictures above show pipe supports designed for a system with very cold operating temperatures. The insulating components are polyurethane, which are inside the galvanized steel exterior of the support. At the top left of the picture are the color-coded polyurethane components of a “cold shoe” for a 60” pipe, the top (green) is 14 lb/ft3 density and the bottom (orange) is 20 lb/ft3 density. The higher density material has greater compressive strength but it is a better conductor of heat. The other pictures show finished shoes which have white coating over the polyurethane. Hot shoes, designed for high operating temperatures, are similar but usually have different insulating materials.

Want to learn more about pre-insulated supports? View a recording of a past live pre-insulated webinar.