Large anti-corrosion flange mainly uses radiation cross-linked polyethylene hot shrink belt anti-corrosion process. Steel pipe anti-corrosion radiation cross-linked polyethylene thermal compression strip is a new type of steel pipe weld anti-corrosion material with good performance and simple operation. It is composed of a base material and a hot melt layer double layer material. The main standard SY/T0413 -2002 "Technical standard for buried steel pipeline polyethylene embalming layer", SY/T 4054 -2003 radiation cross-linked polyethylene thermal condensation band(set) ", SY/T0415 -1996 "Technical standards for rigid polyurethane foam insulation layers for buried steel pipes". The material of large anti-corrosion flange is mainly carbon steel, which is suitable for oil and gas transportation engineering and the chemical industry.
The large anti-corrosion flange in the chemical industry mainly uses a thermal contraction belt, which is designed for the anti-corrosion of the welding joint of buried and overhead steel pipes and the thermal insulation filling of the pipeline. It is a combination of radiation cross-linked polyolefin substrate and special sealed hot melt adhesive.