Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering JIS G3463, JIS G3119, JIS G3446, JIS G3218 Black Steel Tube for Oil Casing, API 5L Line Steel OCTG Thread Pipe, ASTM A270, ASTM A249, ASTM A511, Smls Pipe, API5l ASTM A106 Gr. B ASTM A53 Gr. B Carbon Steel Tube and so on.
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