butt-welded joint

短語(yǔ)詞組

短語(yǔ)

• butt -welded joint design 對(duì)接接頭設(shè)計(jì)
• tubular full penetration butt -welded joint 鋼管相貫焊接節(jié)點(diǎn)
• single -welded butt joint with back 帶墊板單面對(duì)接焊
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