... ,DIN1629 , API 5L Steel Grade GB/T8162 , GB/T8163:10#, 20#, 35#, 45#, 16MN(Q345B) ASTM A53 GR. A , GR. B, GR. C ASTM A106 GR. A , GR. B, GR. C ... .0 API 5L A B X42,X46, X52, X60, X65, X70, X80 ASTM A106 GrB seamless steel pipe China GBASTMDIN 17175 10#ASTM A106 Gr.A ... OCTG PIPE, OIL PIPELINE: Material:J55,K55,N80,P110,L80/Gr.B X42,X46,X52,X56/X65,X70 and more. Certificate:API spac 5L/5CT ...