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方、矩形管是一种闭口冷弯型钢,属于异型钢管。它是一种高效经济断面型材,具有重量轻,强度高,抗弯及抗扭截面系数大,节省材料等优点。广泛应用于汽车制造,机械制造,农机具制造,船舶制造及建筑业等部门。尤其在建筑装饰,铁路运输,高档家具,城市环境美化等领域用量更大。方、矩形管的生产多数利用76、114、165等焊管机组制造。方、矩形管是简单断面管材,根据加工不同的规格在相应的机组先将坯料(钢带)经过逐架次变形焊接成圆后,再由整形机整形为方、矩形。焊接成圆的周长通过方、矩形成品管的周长推算而得。整形机架数由方、矩形管的规格,壁厚而确定。一般情况下壁薄时δ≤3mm时,整形平
Square, rectangular tube is a closed cold-formed steel, are special-shaped steel. It is a highly economical section profile with the advantages of light weight, high strength, large coefficient of bending and torsional section and material saving. Widely used in automobile manufacturing, machinery manufacturing, agricultural machinery manufacturing, shipbuilding and construction industry and other departments. Especially in building decoration, rail transport, high-end furniture, urban landscaping and other fields more heavily. Square, the majority of the production of rectangular tubes using 76,114,165 other welded pipe manufacturing. Square and rectangular tubes are simple cross-section pipes. According to the different specifications of processing, the billet (steel strip) is firstly welded and rounded in the corresponding unit, and then shaped by the shaping machine into a square and a rectangle. Circumference welded into a circle through the square, rectangular tube derived from the perimeter calculated. Plastic rack by the square, rectangular tube size, wall thickness and determined. Under normal circumstances thin wall when δ ≤ 3mm, plastic flat