国产 在线 一区二区三区_亚洲国产精品欧美日韩一区二区_在线观看不卡av电影_国产日韩久久免费福利网站

Main Products
Products Grade: 35VB
Specifications: φ16～38mm
Applied Standard:  agreement
Characteristics: The wire rod is used to produce high strength bolt for steel structure of class 10.9.
Applications: Common partsFastener steel
Use of Products: 35VB ,which is mainly used to produce high strength bolt for steel structure of class 10.9. has characteristics of uniform-chemical composition, low percentage of harmful elements, high purity, slight decarburisation, good surface quality, good cold heading property,stable quality of heat treatment , good hardenability and uniform hardness.