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Frame: plate type channel steel welded with green paint color. Surface.
机架：板型槽钢与钢板焊接而成。表面油漆颜色为绿色。
youdao
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Welded joint category, Joint type No. , Joint efficiencies.
焊接接头分类，焊接接头（焊缝）类型，焊接接头系数。
youdao
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Welded joint category, Joint type No. , Joint efficiencies.
焊接接头分类，焊接接头（焊缝）类型，焊接接头系数。
youdao