產品介紹IT IS WIDELY USED IN CONVEYING GAS，WATER，AND OIL IN OTH THE OIL AND NATURAL GAS INDUSTERIES.主要特點STANDARD:API SPEC L PSL1 PSL2STEEL GRADE:GR.B X42 X52 X60OUTER DIAMETER: 4"——36"WALL THICNESS :SCH10——SCH100LENGTH: RANDOM LENGTH ，FIXED LENGTH， SRL ，DRL其他說明Hebei Zhonghai Steel Pipe Manufacturing Corporation is a professional industrial pipe manufacturer based in China. Our pipes are widely used for mechanical processing， boiler manufacturing， petroleum and natural gas transportation， venue construction and more. 交易說明We are ISO9001: 2000，ISO14000/18000 ，API 5L，CE，CCS certified