久爱伊人,亚洲天堂aaa,欧美三级电影网站,国内一级黄色毛片,aaa毛片在线观看,青青福利,在线中文天堂

Casus Products>> Casus

  The G10B33 produced by XINGTAI STEEL is mainly used in the production of grade 10.9 high - strength fasteners. The product has stable chemical composition, high surface quality,small decarburization layer, low original hardness of wire rod, high strength after heat treatment and good hardenability. An automobile main engine factory uses the material to produce bolts on the truck. reflecting the product has good hardenability, stable performance and low cracking rate in cold heading.