The type B120 metro vehicle aluminum car body is overall load bearing structure, which is mainly made from large aluminum extrusions connected by welding.
B120型地铁铝合金车体为整体承载全焊接结构，主要采用大型中空铝合金型材组焊而成。
The type B120 metro vehicle aluminum car body is overall load bearing structure, which is mainly made from large aluminum extrusions connected by welding.
B120型地铁铝合金车体为整体承载全焊接结构，主要采用大型中空铝合金型材组焊而成。
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