Cryogenic Pipe Support (cold shoe) with Highest R Value PUR and PIR

Supports for Cold and Cryogenic Applications
JIANENG offers a complete range of insulated cryogenic pipe supports for all kinds of low temperature pipe systems. These products are normally used in industrial processes for the production, transport and distribution of liquefied gases. These can be propane and butane (LPG), methane (LNG), ethylene, nitrogen or ammonia. The JIANENG cryogenic pipe supports are standardized and designed according to recognized international technical codes and standards. They cover pipe sizes ranging from OD 21.3mm to OD 965.2mm, with insulation thicknesses from 25mm to 250mm. The supports are made from materials suitable for the specified loads and temperature range (operating temperature down to -196°C).
Insulation Material 
The insulation material of the cryogenic pipe supports is made from fire-retarding polyurethane foam of high density (HDPUF) and forms an integral part of the piping insulation.

Production of HD-PUF Shells 
The HD-PUF is monolithically molded in heavy duty molds under carefully controlled conditions in respect of temperature and humidity. This process provides uniform properties and ensures dimensional stability with no warping. It also produces clean sharp edges that fit neatly with the adjacent line insulation material on site. To guarantee form stability, the insulation cradles are carefully stored for a fixed period of time in order to harden. The moldings incorporate carefully sized step joints (radial and longitudinal) to match the layering of the adjoining line insulation. This method, also known as „shiplapping", provides a reliable interlocking interface with each layer and prevents a direct heat path from the surface of the insulation through to the surface of the pipe. Insulation foam cradles with thicknesses up to 50mm are supplied as single layer without a step. Foam cradles with a thickness of 80mm and 100mm are supplied as single layer with an extended step at either end. The foam cradles for type 56 with a thickness of 130mm and above are supplied in two layers with two steps. The insulation foam cradles for type 57 line stop & fixed supports will be supplied as monolithically molded segments to achieve axial load transmission. The single-layer as well as the double-layer HD-PUF insulation cradles have stepped, longitudinal gaps. The size of these joints must be adjusted during installation to a specified gap dimension, so that the clamping force applied by the disc spring bolting prevents a relative displacement between clamp base and piping. Once installed the longitudinal gaps shall be filled with a resilient foam insulation material. A laminated aluminum/polyester foil is factory-bonded to the outermost surface of the outer layer of the HD-PUF assembly. This vapour barrier is supplied oversized to overlap the longitudinal joints and is sealed at site with adhesive tape of the same material. Directly after installation of the cryogenic pipe support, all exposed HD-PUF foam surfaces must be protected to prevent moisture ingress. As a rule, a cryogenic, fire-retarding vapor barrier of elastomer mastic is applied for this purpose. The HD-PUF is available in three standard densities. They are supplied in different colors for ease of identification.