Butt Seam Welding

a type of resistance welding for joining the edges of sheets in a butt joint, used mainly in the manufacture of welded pipe. The metal in the weld zone is heated by an electric current in resistance pipe-welding machines, and the butt joint is then pressed by steel rollers. With steel pipe of small diameter (10–50 mm), the stock (a steel band) is first heated in a gas-fired furnace and formed into pipe; the lengthwise seam is welded by drawing through a mandrel rod at speeds up to 1,200 m per minute. Such units can produce up to 70 km of welded pipe per hour.

单词	butt seam welding
释义	Butt Seam Welding Butt Seam Welding a type of resistance welding for joining the edges of sheets in a butt joint, used mainly in the manufacture of welded pipe. The metal in the weld zone is heated by an electric current in resistance pipe-welding machines, and the butt joint is then pressed by steel rollers. With steel pipe of small diameter (10–50 mm), the stock (a steel band) is first heated in a gas-fired furnace and formed into pipe; the lengthwise seam is welded by drawing through a mandrel rod at speeds up to 1,200 m per minute. Such units can produce up to 70 km of welded pipe per hour.
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