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furnace butt-welding process
met.
炉焊管法
(【技】将焊管坯在加热炉加热,然后通过焊管模或成型焊接机受压成型并焊接成钢管的方法。炉焊管主要用于水、煤气的运输和暖气系统,也可用于结构件。)
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