亚洲天天骚女现场视频,www.888日本,亚洲第一天堂无码专区日韩,免费一级黄片视频在线观看无码,亚洲日韩线精品一区一区一区,一级无码日韩毛片,国产免费美女被艹视频

Casus Products>> Casus

  30MnVS6 produced by XINGTAI STEEL has the feature of stable chemical composition and mechanical property, minor decarburization, good surface quality, homogeneous microscopic structure. Not only the grade cost-saving for quenched and save heat treatment process, also avoid the deformation of products caused by heat treatment. 30MnVS6 is a kind of Non-quenching steel for grade 8.8-9.8 fasteners,There are few enterprises in this kind of steel . A customer of XINGTAI STEEL uses the steel production ball rod, which is applied to the well-known automobile brand steering system, and the control of various indicators is stable, which can meet the requirements completely.