... 6-2.5mm Material:Q195,Q235 Package:Bundles,loose Pre-galvanized steel tube / pre-galvanized round pipes Size:1/2"-8"Thickness:0 ... .,Ltd mainly produce all kinds of steel pipes such as : ERW Steel Pipes , Square Pipes , Rectangular Pipes , Pre-galvanized Pipes , Galvanized Pipes , ... . www.bkssteel.com.cnChalie Wang ( Sales Manager ) Tianjin Baokunsheng Steel Trading Co.,Ltd Pre-galvanized steel tube