欧美午夜精品人妻久久久久,刑警娇妻穿着乳环被调教 ,夜夜操亚洲女人,一级a做片免费久久无码

Guangzhou Steel support which requests should fit?

Guangzhou 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. 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.