Scaffoldings for construction 1.Standard:ASTM A53,BS1387,GB/T3091 2.Material:Q195, ... .OD:48.3mm 4.WT:1.5-3.5mm Scaffoldings for construction1.Standard: ASTM A53,BS1387,GB/T30912.Material: Q195,Q215 ... Asia, India, the Middle East,South America, North America Scaffoldings for construction