亚洲裸体视频,一级毛片在哪里看,国产素人在线,国产精品丝袜久久久,亚洲无砖砖区一二区免费,亚洲а∨天堂久久精品喷水,91网站在线播放

Main Products
Products Grade: ML15Cr
Specifications: φ8~14mm
Applied Standard:  agreement
Characteristics: It’s used to produce automotive engine parts.
Applications: Common partsCommon fastener
Use of Products: This product has characteristics of uniform-chemicalcomposition, low percentage of harmful elements, high purity, slight decarburisation, good surface quality. After spheroidize annealing, this product has characteristics of good cold heading properties ,stable heat-treatment properties and good hardenability.