av免费不卡在线观看网址,黄色视频大全ww,h在线观看网站,亚洲视频在线免费观看,男人天堂视频在线播放,日本女同羞羞视频,jk美女隐私视频网站

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.