Wan Chi steel pipe (Qin HuangDao)Co,Ltd ,a manufacture ,lies in He Bei province, east of China Mainland ,She is one of branches of TaiWan WanChi Group, specialize in LSAW (Lognitudinal Submerge Arc Welding) or DSAWwhich is a kind of welding seam steel pipe used in transportation oil ,petrol ,natural gas (LPG and LNG), steel construction and so on .In 1992 and 1995,We have been awarded with the API 5L & ISO certificates.
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