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Q235B hot rolled carbon steel black shs rhs round square and rectangular tube hollow section
Hot tube refers to the pipe fittings produced by hot rolling process, which is a common mechanical structure. Hot rolling refers to rolling above the recrystallization temperature. Hot rolling process can significantly reduce energy consumption and cost. Hot rolled metal plasticity is high, when the deformation resistance is low, greatly reducing the energy consumption of metal deformation, and can improve the processing performance of metal and alloy, the casting of the state of the bulky grain crushing, significant crack healing, reduce or eliminate the casting defects, the as-cast into deformation, improve the processing performance of alloy.
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ASTM A500 EN10219 carbon steel black shs rhs square and rectangular tube hollow section
1) Natural Black; 3) Color painted on natural black steel pipe; 5) 3PE coated on natural black steel pipe; 7) Pre galvanized zinc coating 30g/m2 or customized(30g/m2 - 100g/m2); 2) Oiled with pvc wrapped; 4) Color painted on Galvanized steel pipe; 6) 3PE coated on Galvanized steel pipe; 8) Hot dip galvanized zinc coating 200g/m2 or customized(200g/m2 - 500g/m2)
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D shape Cold Hard bright steel Pipes and tubes
cold hard steel pipes, sizes same as cold rolled steel pipes, surface also smooth, and the color is bright than cold rolled. the hardness is more better than cold rolled steel pipes, most use on furniture , to instead of exact bright steel pipes. easy to be colored and hardness well.
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