... , API 5L Steel Grade GB/T8162 , GB/T8163:10#, 20#, 35#, 45#, 16MN(Q345B) ASTM A53 GR. A , GR. B, ... GR. A , GR. B, GR. C DIN 162 St 37.0, St 44.0, St 52.0 API 5L A B X42,X46 ... A53 Gr.ASt 37-2 ASTM A179-CSt 35.8 ASTM A214-CSt 35.4 ASTM A192 20#ASTM A106 Gr. ... tubes wall/Extra Strong. Size: OD16mm - OD426mm Wallthickness: 1.65mm-35.71mm /sch40-sch160/std Bundle, seaworthy packing DIN specifications seamless ...