亚洲潮吹无码在线观看|99热国产在线欧洲三级无码在线|六月综合激情网素人无码免费在线|日本无卡中文字幕

Xingtai Steel high carbon chromium bearing steel GCr15, mainly used in the manufacture of rolling bearings of rolling body and ring.The chemical composition of bearing steel high uniformity requirements, on the content and distribution of non-metallic inclusions and carbide distribution is extremely strict requirements, such as smelting is difficult. Bearing steel GCr15 of Xingtai Steel reached the international similar product level, was awarded the annual Metallurgical Products Gold Award and Metallurgy Industry High Quality Products, the quality of the product can completely meet the demand of users,got the consistent high praise ofgeneral customers.