www.rkvl.cn-性少妇mdms丰满hdfilm,亚洲精品专区在线观看,国产亚洲成人av一级特黄高清aaaa大片,久久久久久中文字幕无码

Steel support which requests should fit?

Guangzhou Steel tells you: steel support which requests should fit?
1. Guangzhou Steel components can be used to support the convergence of high-strength weld or bolt adapter;
2. waist beam convergence node should be set at the support point adjacent to, and should not exceed 1/3 of the distance support;
3. The steel beam waist and row of piles, should choose between underground successive wall not less than C20 fine aggregate concrete infill; convergence node steel and steel support beam waist should be set stiffener.