Head cover is of a welded structure of the Q235 steel plate with sufficient strength.
顶盖为Q 235钢板焊接结构，具有足够的刚强度。
The steel structure, after being lifted to the roof shall be welded on the structure.
钢结构吊装至屋顶后，焊接在结构上。
The structure body is welded by steel plate.
其结构床身采用钢板焊接。
The structure body is welded by steel plate.
其结构床身采用钢板焊接。
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