In order to retain ample strength at the welded seam, the tube wall thickness is increased making the overall frame heavier.
为了保留足够的实力在焊接缝，管壁厚度增加，使整体帧重。
In order to retain ample strength at the welded seam, the tube wall thickness is increased making the overall frame heavier.
为了保留足够的实力在焊接缝，管壁厚度增加，使整体帧重。
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