haodiaocao这里只有精品一,男人午夜网站,国产免费插插插,国产精品欧美激情在线播放,国产成人aa在线视频,国产情侣自拍网站,狠狠色丁香婷婷

Main Products
steel for machine structure Products>> Main Products>> steel for machine structure
Products Grade: 20CrMo
Specifications: φ5.5～38mm
Applied Standard:  GB/T 3077
Characteristics: As usual,this product is used to produce the automobile and motorcycle accessories,mechanical gear.
Applications: Common partsCommon fastenerconstruction fastener steel
Use of Products: This product has characteristics of uniform-chemical composition, low percentage of harmful elements, high purity, good surface quality. After spheroidize annealing, this product has the characteristics of good cold heading properties. And the product has excellent hardenability.