Product Name Hot dipped galvanized round steel pipe/gi pipe pre galvanized steel pipe galvanised tube Material carbon steel Color silver Standard GB/T3091-2001 , BS 1387-1985 , DIN EN10025 , EN10219 , JIS G3444:2004 , ASTM A53 SCH40/80/STD , BS- EN10255-2004 Grade Q195/Q215/Q235/Q345/S235JR/GR.B-D/STK500 Brade MJ Thread