钢梁

The welder carefully welds the steel beams together on the construction site.

焊工在建筑工上仔细焊接钢梁。

Nowadays, slop roof consists of steel column and beam or steel truss and purling, and connected with existed building by concrete beam cast in place, is being used commonly in this project.

目前，在全国“平改坡”项目中，普遍采用轻钢结构坡屋顶，由钢柱、钢梁或钢架及钢檩条构成，通过浇筑混凝土卧梁将新增轻钢坡屋顶有混凝土结构连接。