亚洲色图欧美色,久久不射电影,欧美激情手机在线,好看的一级毛片,亚洲狼人区,天天爱天天做天天爽,91欧美日韩

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.