ASTM A911/A911M-15 清晰版
本帖最后由 xifeng1115 于 2016-10-17 17:01 编辑求助 ASTM A911/A911M-15 Standard Specification for Low-Relaxation Steel Bars for Prestressed Concrete Railroad Ties 清晰版
ASTM A911/911M-15 Standard Specification for Low-Relaxation Steel Bars for Prestressed Concrete Railroad Ties
http://bbs.infoeach.com/thread-116146-1-1.html
页:
[1]