Requirements for insulation steel pipe material of black jacket:

　　1. It is necessary to solve the harm of expansion and contraction force of heat preservation pipe to the pipe.

　　2. The heat loss of insulation pipe must be minimized.

　　3. The durability of thermal insulation layer in atmospheric environment must be solved.

　　4. The density of insulation layer must be greater than 60kg / m3.

　　The raw materials of the black jacket insulation steel pipe are generally prefabricated to ensure that the outer surface of the pipe is evenly heated to a certain extent.

　　The above is the relevant content introduced by the manufacturer of black jacket direct buried straight seam steel pipe. For more information, please visit the website: https://www.sdhpgy.com