BS 7973-2-2001 Spacers and chairs for steel reinforcement and their specification — Part 2: Fixing and application of spacers and chairs and tying of reinforcement
钢筋的隔离件和垫板及其规范 第2部分:隔离件和垫板的固定和应用以及钢筋的捆扎
[attach]73038[/attach] 作者: admin 时间: 2015-6-3 08:22:40