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Cold bend section steel

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Cold-formed section steel is the main material for making light steel structure,which is made of steel plate or steel strip.Its wall thickness can not only be made very thin,but also greatly simplifies the production process and improves the production efficiency.It can produce all kinds of profiles with uniform wall thickness but complex section shape and cold formed steel of different materials which are difficult to be produced by ordinary hot rolling method.Cold-formed steel is not only used in various building structures,but also widely used in vehicle manufacturing,agricultural machinery manufacturing,etc.There are many kinds of cold forming steel,according to the section of separate mouth,semi-closed mouth,closed mouth.According to the shape of cold formed channel steel,Angle steel,Z steel,square pipe,rectangular pipe,special-shaped pipe,rolling door and so on.In the new standard 6B/T 6725-2008,the yield strength grade classification of cold-formed steel products,the fine grain steel and the specific examination indexes of mechanical properties of products are added.

Cold-formed section steel is made of ordinary carbon structural steel,high quality carbon structural steel,low alloy structural steel plate or steel strip.Cold bend section steel is belong to economic cross section steel,as well as energy-saving materials,is a kind of the strong vitality of the new type of steel varieties,it is widely used in various fields of national economy,its use can be divided into about guardrail plate,steel structure,car,container,steel formwork and scaffolding,railway vehicles,ships and Bridges,steel sheet pile,transmission tower,10 other broad categories.

There are two different forming processes in the production of cold-formed hollow square(moment)section steel.One is to become a circle and then a square or rectangle;The other is a straight square or rectangle.In the field of square(moment)shaped steel pipe forming,the technology of directly forming square and rectangle is advanced forming technology.The process of forming a square or rectangle is more advanced than the process of forming a circle and then changing it into a square or rectangle.The process of forming a circle first and then changing to a square or rectangular shape will cause great damage to the quality of steel strip or coil.And the direct square,rectangular process,in the molding process will not cause damage to the material,can well maintain the mechanical and physical properties of raw materials,to ensure the excellent product.

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