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

Main Products
steel for anchor-chain Products>> Main Products>> steel for anchor-chain
Products Grade: 20Mn2
Specifications: φ8.0~12.0mm
Applied Standard:  agreement
Characteristics: he producrs is used to produce hoisting machinery production such as chain, lifting steel strapping, self-assembled hanger of chain hoist etc, with the size of φ6mm,φ8mm,φ10mm.
Applications: Common mechanical steel
Use of Products: 20Mn2 is a commom steel which is used to produce chain and sling. The product has characteristics of uniform-chemical composition, low percentage of harmful elements, high purity, good surface quality etc.. It has stable heat-treatment properties after annealing process.