日本中出在线观看,日韩亚洲精品视频,欧美成人三级精品,一区二三区视频电影,日本伊人色综合网,三级全黄的视频在线观看,三级全黄的视频在线观看

Casus Products>> Casus

  The Q10B33-B produced by XINGTAI STEEL is mainly used to produce 10.9 grade standard parts. The product has the advantages of stable composition, high purity of steel, small decarburization layer, low cracking rate in cold heading, low original hardness of wire rod, high strength after heat treatment and good hardenability. A customer of XINGTAI STEEL used the product to produce bolts for construction machinery, which reflected that the product quality was stable and met the requirements of use.