... 1*20'DV) 5. Pipe manufacturer Key Words: Line pipe, gas pipe, oil pipe, water pipe and tube, plain end steel pipe, heating system pipe, floor heating pipe01) Material ... :8#, 10#, 20#,Q195,Q215A,B Q235A,B,Q345A,B,C,D,E 02)O/D*W/T:20mm~219mm*1 ... conveyance, such as water, gas, and construction ... pipe weight: WT/Piece=(O/D—Wall Thk)*Wall Thk*0.02466*1.06*Pipe Length Oil, Gas and Water Conveyance Pipe ...