球探比分网即时篮球比分|足球即时比分手机捷报版|足球90分vs即时比分√即时比分|意甲联赛最新比分积分榜排名,今日竞彩推荐预测分析,斯诺克比分官网,捷报球探比分

　　Xingtai steel’s XG10B21 products are mainly used in the production of 8.8 bolt. Customers reflects the product composition is stable, high dimensional accuracy. For the free of annealing processing, it can directly reduce the production cost. Because of containing B elements, it has good hardenability. Drawing performance stability, cold heading does not crack, performance stability after heat treatment. The end products made by this material widely used in mechanical fasteners.