... :A106 GRB, A53 GRB, API 5L,GRB, A106-B Seamless Steel Pipe Company NameShijiazhuang Beihai Pipe CO.,LTDBusiness TypeMANUFACTURE ... on. StandardGradeSpecificationsGB10#,20#,45#,16MnO.D.:1/2"-20"W.T.:SCH10-XXSLength:5-12mBSQ195,Q235,Q215,Q345ASTMA283-D, ... A106-A,A179-C,A214-C,A192,A226,A315-B,A53-B,A178-C,A210-A-1,A210-CDINSt33,St37,St37 ... -55,K-55,N-80OD:4.5"-13.375"W.T.:0.205"-0.514"Length:R1,R2,R3Thread ...