After its birth system, pinch wire, welding, Blue Point , Shao Lan , polished, gold - plated, and other processes.

它经过制胎 、 掐丝 、 烧焊 、 点蓝、烧蓝 、 磨光 、 镀金等工序.

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Double wire welding and automatic ultrasonic testing ( AUT ) applied in construction of submarine pipeline were introduced.

介绍了双丝焊接技术和自动 超声波检测 技术在海底管线环焊缝焊接施工中的应用.

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