... 5. Pipe manufacturer Key Words: Line pipe, gas pipe, oil pipe, water pipe and tube, plain end steel pipe, heating system pipe, floor ... offer 6m, 5.85m, 5.8m)04) Surface: Black, Hot Dipped Galvanized, bright finish, ect. 05 ... for low pressure liquids conveyance, such as water, gas, and construction, and support, structural use 06) ... Formula for calculating the H.D.G. pipe weight: WT/Piece=(O/D—Wall Thk)* ...