What information is polyethylene polyurethane insulating steel pipe?
Polyethylene polyurethane insulating steel pipe is named after the outer shell of the insulating steel pipe, and the outer shell is polyethylene.
Layer 1: Task Steel Tube Layer
Seamless steel pipe, spiral steel pipe and straight seam steel pipe are generally selected according to design and customer requirements. After treatment by advanced shot peening rust removal process, the steel tube rust removal grade can reach Sa2 level in GB/T8923-1988 specification, and the surface roughness can reach R=12.5 micron in GB6060.5-88 specification.
Second layer: polyurethane insulation layer:
High-pressure foaming machine is used to inject rigid polyurethane foam plastics into the cavity formed between the steel pipe and the outer sheath at one time, which is commonly known as "tube-in-tube foaming".
Layer 3: High Density Polyethylene Maintenance Layer:
Prefabricated black or yellow polyethylene plastic pipes with a certain wall thickness. Polyethylene is odorless, non-toxic, waxy-like and has excellent high temperature resistance. The lowest operating temperature can reach - 70 ~100 C. It has good chemical fluctuation, and can resist corrosion of a large number of acids and bases (not resistant to oxidizing acids). It is insoluble in ordinary solvents at room temperature and has little water absorption, but it can be slowly dissolved in some inorganic solvents due to its linear molecule, and does not swell, and has electrical insulation function. Excellent. Its function is to maintain the polyurethane insulation layer from the destruction of mechanical hard objects, and the second is anti-corrosion and waterproof. High density polyethylene polyurethane foamed insulation steel pipe execution: SY/T114-2000 and SY/T115-2001 specification.
In summary, all the above-mentioned Shandong Hipper Pipe Technology Development Co., Ltd. provides, want to know more about polyurethane insulation pipe manufacturers, welcome to pay attention to our website: https://www.sdhpgy.com Thank you for your support!
