国产一区在线播放,午夜AV爽歪歪,日韩成人在线视频传媒,免费孕妇操逼视频福利t

Main Products
Products Grade: XG835NH
Specifications: φ5.5~40mm
Applied Standard:  agreement
Characteristics: This product is mainly used to produce weathering steel fasteners of class 10.9.
Applications: Fastener steel
Use of Products: XG835NH has characteristics of uniform-chemical composition, low percentage of harmful elements, high hardenability ,good surface quality. It is a new type of weathering steel.IT has low corrosion rate,and can be used without coating.