... 5L A B X42,X46, X52, X60, X65, X70, X80 ASTM A106 GrB seamless steel pipe China GBASTMDIN 17175 10#ASTM A106 ... seamless steel pipes for structural purpose Material: Rst34-2, Rst37-2, RSt44-2, St52 Size: OD 16mm - OD 426mm OCTG PIPE, OIL PIPELINE ... : Material:J55,K55,N80,P110,L80/Gr.B X42,X46,X52,X56/X65,X70 and more. Certificate ...