已经有次观看 wencong在2014-12-23发布

Channel：Non-ferrous Metal 标签： Cold  bending,  bending,  machining 

简介：There are two kinds of cold bending and bending bending workpieces. Bending said cold-formed at ambient temperature, often done by the fitter. When the workpiece is thick (more than half of 5mm), to be bent in a heated situation, said bending, often done by the blacksmith.