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The gas production wellhead assembly is designed and manufactured in accordance with GB/T22513-2008 and API Spec 6A standards.All pressure-bearing parts and flanges are forge pieces of high-grade alloy steel and stainless steel and subjected to non-destructive test(NDT) and special heat treatment to insure safety and good sulphur-resisting performance. This product consists of such components or parts as bottom flange,top flange,tubing head,gate valves,small-sized four-way union,stop valves and measuring instruments,etc. |
