... ASTM A53 B Seamless Steel Pipe 2.WT:2-20 mm OD:21.3-810 mm 3.Professional manufacturer 4. ... Competitive price Hot Rolled ASTM A53 B Seamless Steel Pipe 1.Commodity ... s requirements;10.MaterialA53(A,B), A106(B,C) Q235B,Q345B,16Mn, 10#.20#, Gr.B,X46,X52,X56,X60,X65, ... want to know more about Hot Rolled ASTM A53 B Seamless Steel Pipe, please visit: http://www.lcnsu. ...