Plastic Coating of Large-sized Welded Steel Pipe for Natural Gas Transport

Nowadays the demand for plastic-coated large-sized steel pipes for natural gas transport is rather big,whereas producers for this kind of pipe are far from enough.It is identified that the pipe is internally coated with epoxy or EP,and externally coated with liner low-density polyethylene or LLDPE.Also described here is the key techniques concerning the tube coating.