double welded butt joint
single-welded butt joint with back
tubular full penetraton butt-welded joint
butt welded splice joint
butt-fusion welded joint
Bidirectional Butt Joint Exposure Method
butt joint
对接
迭接
对接缝
对头接
平接接头
对接头
蝴蝶式锤钻
碰焊
对接接头
丁字对接焊缝
对焊接头
拼接焊接接头
对接焊
平板对接焊
对接合
对头接合
对接榫
对[头]接[合]