High quality seamless steel pipe for oil field 1. Factory sell 2. OD: 10-630mm 3. ASTM,DIN,JIS,BS satandard Company : Shandong ... Donghai Steel Pipe Co., Ltd. name seamless steel pipe for oil fieldBrand ... ,JIS G3454,JIS G3455,JIS G3456,JIS G2461,DIN 1629,DIN 1630,DIN2440, DIN2448,DIN 17175,GB/T8162-2008,EN10204,EN10216-1,EN10216-2 ...