国色天香手机视频免费网|汤唯色戒床上未删减版|91视频大全|在线免费成人,不忠未删减完整版电影,久久性天堂,伊伊亚洲综合人网777

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.