国产一区二区播放,亚洲男人在线视频观看,俄罗斯强奷younv在线播放,亚洲黄色一级大片免费看,欧美成人aa大片拍拍拍,色一情一伦一区二区三,99re6久精品国产首页

Hello, welcome to visit Taizhou Jinyou Metal Products Co., Ltd. official website!

+8613004460973

News

JINYOU METAL

Technical requirements for steel wire

Release:tzwire Browse:1046

Technical requirements refer to the mechanical properties of steel wire, the technical standards of processing and manufacturing quality, as well as the ordering requirements of users, etc.  

The technical requirements of ordinary steel wire are diameter tolerance, surface quality, tensile strength, bending number, the root number of each plate of steel wire, disc requirements and weight.  

The technical requirements of high strength steel wire and high quality steel wire, in addition to the above points, there are uniform performance, chemical composition, elongation, decarbonization depth, fracture inspection, metallographic organization, resistivity, hardness and winding, torsion and other test requirements.