色戒时长完整版,亚洲国产一区二区三区精品,久久久久久久精彩视频,怡红院av亚洲一区二区三区h,艳情五月,国产亚洲成av人在线观看导航,男女午夜免费视频

Main Products
steel for machine structure Products>> Main Products>> steel for machine structure
Products Grade: S20C、S35C、S45C、S48C、XGS35C、XGS45C、GS35C-A、GS35C-BT、GS45C、QS45C-C
Specifications: φ5.5~42mm
Applied Standard:  Q/XG 115
Characteristics: This kind of products is mostly used to produce hand tools, mechanical components and CD bar for manufacturing transmission, suspension, brake and steering devices of automobile, connecting rod of absorber in motorcycle and components of equipment and electric appliance.
Applications: Common partsaxostyle parts
Use of Products: This kind of products has characteristics of uniform-chemical composition, low percentage of harmful elements, high purity, slight decarburisation, good surface quality, tight tolerance etc.