... and low-middle pressure transmission fluid steel pipe ,with high technical content, high added value, cost-effective and uniform wall thickness ... , DIN, ASTMStandard: BS 1387, BS EN10296, GB 3087-1999, GB...Grade: 10#-45#, Cr-Mo alloy, 16Mn, A53-A369, AP ... ...Grade: 10#, 20#, 45#, 15CrMo, 16Mn, A53(A,B), A...Thickness: ...