大口径直缝焊管正在蓬勃发展；
The large diameter straight welded steel pipe is now flourishing developed.
宝钢UOE机组是我国第一套现代化大口径直缝埋弧焊管机组，也是世界上装备最先进的大口径直缝埋弧焊生产线。
Baosteel's UOE mill is the first modern large-diameter longitudinal submerged-arc welded (LSAW) pipe unit in China. It is also an advanced production line of the same kind in the world.
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