greenhouse galvanized tube:   Standard:  BS 1139, BS1387-1985, EN 39, EN10219, JIS G 3444   Steel Grade: Q195, Q215, Q235, Q345, S235JR, S275JR, STK400, STK500   Out Diameter: 27mm, 38mm, 42mm, 48.3mm-48.6mm Wall Thickness: 2.0mm, 2.5mm, 2.75mm, 3.0mm, 3.25mm, 3.85mm, 4.0mm Length: 5.8m, 6m, 6.4m, 6.5m, 0.3-18m   End: Square cut, Burr removed   Surface:  Lightly oiled, Hot dip galvanized, Electro galvanized, Black   Use: Scaffolding is a temporary structure used to support people and material in the construction or repair of buildings and other large structures. Material Storage Racks, Pallets, Hydraulic Platforms, Trusses, Columns, Purlins, Greenhouse, Stands Towers, Agricultural Equipment   Packing:  Plastic plugs in both ends, Wrapped in waterproof paper or PVC sleeve, and sackcloth with several steel stripsPlastic plugs in both ends, Wrapped in waterproof paper or PVC sleeve, and sackcloth with several steel strips   Our company produces different types of ERW and SSAW steel pipe 600,000 tons annual, including casing pipes for exploration of oil and gas, oil and gas transmission pipes, fluid transportation and structural pipes based on the domestic standards of GB/T9711, GB/T3091, GB/T13793, SY/T5768, SY/T5037 and SY/T5040, and international standards of API Spec 5CT, API Spec 5L PSL2, ASTM A53, ASTM A252, EN 10217, EN 10219, and other related standards. All these steel pipes are suitable for the industries of oil, natural gas, ship building, chemical, environmental protection, boiler, water conservancy, electrical industry, steel structure, building and other related fields.