High quality seamless steel pipe for oil field 1. Factory sell 2. OD: 10 ... JIS,BS satandard Company : Shandong Donghai Steel Pipe Co., Ltd. name seamless steel pipe for oil fieldBrand namedonghai steel pipeStandardAPI 5CT , ... ,35,45, 16Mn,Q345,20G,20MnG, 25MnG,15CrMoG,12Cr1MoVG, J55,K55,N80,P110,T1,T5,T11,T22,T23,and so ... 0602,High Pressure Equipment licens, High quality seamless steel pipe for oil field