... ,6m 1.Products Description Material Seamless Galvanized Steel Pipe A53, galvanized steel pipe A53 , galvanized steel tube, carbon steel pipe A53StandardBS1387, BS4568, ASTM A53, GB/T3091-2001,etcRelated GradeQ195,Q235,Q345 ... ,10#,20#,A53,A36,Round pipeO.D.3mm~ ...