美女污视频网站,日韩色爱,深夜福利入口,sihu视频,四虎影院在线视频,91aaa免费观看在线观看资源,亚洲综合在线视频

Main Products
Products Grade: 304B,304HC
Specifications: φ5.5~11mm,φ5.5~24mm
Applied Standard:  agreement
Characteristics: stainless steel fastener.
Applications: Stainless steel fasteners
Use of Products: 304B,304HC is similar with 304, but regulate the Cr content and add Cu element.adding Cu not only can keep same corrosion resistance with 304 but also can improve other properties, it is benefit for drawing and forming.