Haicheng Northern Steel Pipe Anti-corrosion Company Limited is the special manufacture enterprise of the high-frequency straight seam welded pipe, buried steel pipeline anti-corrosive products of FBE /PE/PP. The company equipped in the world advanced level of Slitting crew, 426mm ERW steel Pipe production line and219mm straight seam welded pipe production line, 3PE/PP anti-corrosion production line and a full set of test equipment. Now we can produce 60mm-426mm low-pressure fluid transmission pipe welding, oil pipeline pipe, oil casing tube, structural steel pipe, casing roller tube, anti-corrosion insulation pipe (60mm-1800mm) and other series of specifications for a variety of products, Now we has been formed steel pipe 150, 000 tons, anti-corrosion pipe 4.5 million square meters of annual production capacity. The company&＃039;s products in strict accordance with GB/T 9711, API-5L(PSL2), API 5CT, ASTM, DIN, BS, JIS standard. In April 2006 we had passed the DNV ISO 9001 & IS0 14001 & OHSAS 18001 international quality system certification.