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: SCM420
Specifications: φ5.5～38mm
Applied Standard:  agreement
Characteristics: It's used to produce the engine vavle push rod.
Applications: Common partsCommon fastener
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.