精品国产一区二区三区在线观看,中文字幕在线观看不卡视频,超碰97在线播放,手机看片福利久久,成人精品毛片va一区二区三区,欧美伊人久久,国产伦精品一区二区三区视频孕妇

Main Products
Products Grade: 10B18,10B21,10B28,10B30,10B33,10B33-FY,10B38,Q10B21-C、Q10B23M-C、Q10B21-DW、Q10B21-B、Q15B25M-MT、Q37MnB5、SAE10B18、SAE10B21、15B25、MnB120H、MnB123H、G33B2-B
Specifications: φ5.5~42mm
Applied Standard:  Q/XG 137
Characteristics: The products are mainly used to produce fasteners of class 8.8 ~ 12.9.
Applications: Common partsFastener steelCommon fastenerHigh strength fastenerconstruction fastener steelsteering system parts
Use of Products: 10B21,10B28,10B30,10B33 and 10B38 are mainly used to produce fasteners of class 8.8 ~12.9, It has of uniform-chemical composition, low percentage of harmful elements, high purity, slight decarburization, good surface quality, good cold heading performance, low rigidity. They also has characteristics of high intensity and good hardenability after heat treatment. 10B21 gains the gold-cup of the metallurgical product actual quality in 2008. The three steels were identified the lead level of China. 10B21 has been sold the enterprises of the east and the south of China that product the standard parts. And the steel is widely used to product fastener for auto. They have a good reflection.