A first layer of epoxy powder (FBE> 100um) 2015 年 Super powder steel corrosion rates, single anti-corrosion steel powder manufacturers wholesale second adhesive layer (AD) 170 ~ 250um third layer of polyethylene (PE) 2.5 ~ 3.7mm actual Operating in the three materials mixed blend, after processing so that the pipe is firmly bonded to form an excellent coating. Its processing methods are generally divided in two and wound sheathed round mold.