... for petroleum,water,gas,ect 2.2PE,3PE coating anti-corrosion pipe 3.ISO9001,ISO14001certtificate Quick DetailsPlace of Origin: Hebei China ... water,gas,ect2.2PE,3PE coating anti-corrosion pipe3.ISO9001,ISO14001certificate ADVANTAGES: 1.2/3 PE have strong adhension 2. ... coating spreading is even,toughness is high 3.anti-stress fission strong, high shock resistance 4.high tightness, ...