Size:20mm*20mm to 600mm*600mm WT ... toleranceW.TThickness Tolerance20MM*20MM-600*600MM±0.030.8--20MM±0.02Length 2--12M , according to customers ... ,BS1387,ASTM A53,EN10219,BS1139,EN39,DIN2440Chinese MaterialQ195/Q215/Q235/Q345 Product Category :Metallurgy, Mineral & EnergyTechnique:Welded, ... Pipe (include Round, Square and Rectangular section), Hot dip galvanized pipe(HDG Pipe),ERW Pipe and tube.We are a ...