Steel Jacket Heat Preservation Pipes

Steel Jacket Heat Preservation Pipes have three layers from inside to outside. The first layer is the working pipes. In accordance with the designs and requirements of the customers, working pipes can be seamless steel pipes, SSAW steel pipes and LSAW steel pipes. The surface of the pipes is firstly treated by sand-blasting, which can match the Sa2 degree of the standard GB8923-1988. The roughness of the surface can reach R=12.5µ. The second layer is polyurethane insulation. It is formed by filling the hollow between the pipe surface and the preservation layer with liquid polyurethane by high pressure foaming machine. The third layer is anti-corrosion steel pipes. Anti-corrosion insulation pipes not only prevent corrosion but also preserve heat. They have wide use in constructions.