Hollow sections for structural purpose Shape: Hollow sections: square, rectangular, round, triangular, hexagonal, eliptical hollow sections Scaffolding Usage: Hollow sections: Construction: hall structure, sea trestle, airport structure, shipbuilding, security door frames, garage doors, strengthening liners of steel doors and windows, indoor partition walls, cable bridge structures and expressway safety guards, balustrade, decorating, residential, ornamental pipes Automotive parts: motorcar case, car and bus manufacture, vehicles Agriculture: agricultural equipment Industry: machinery, solar stent, offshore oil field, mine equipment, electromechanical hardware, , heavy engineering, mining and resources, process engineering, materials handling, mechanical parts Traffic: walking rails, roll-up doors, guardrail, plaza structure, signage, road furniture, fencing Logistics storage: supermarket shelves, containers, transport industries, commercial construction Other: sports apparatus, leisure equipment, furniture, school furniture Scaffolding tube: Material storage racks, pallets, hydraulic platforms, trusses, columns, purlins, greenhouse stands towers Quality standard: Hollow sections: Gb/t 13793 longitudinal electric resistance welded steel tubes Gb/t 6728 cold formed steel hollow sections for general structure--dimensions, shapes, weight and permissble deviations Astm a500 cold formed welded and seamless carbon steel steel structural tubing in round and shapes Astm a 53 standard specification for pipe, steel, black and hot-dipped, zinc-coated, welded and seamless En 10210 hot finished structural hollow sections of non-alloy and fine grain structural steels En 10219 cold formed welded structural hollow sections of non-alloy and fine grain steels Jis g 3466 carbon steel square for general structural purposes Bs 1387 steel tubes for use for water, gas, air and steam In bundle or according to your requirements