Scaffolding Steel Pipe 1.Standard:ASTM A53,BS1387,GB/T3091 2. ... 3.OD:48.3mm 4.WT:1.5-3.5mm Scaffolding Steel Pipe1.Standard: ASTM A53,BS1387,GB/T30912.Material: Q195 ... : Southeast Asia, India, the Middle East,South America, North America Scaffolding Steel Pipe