Method for producing helical seam pipes

摘要: In winding a continuous strip of sheet metal having chamfered edges into helical seam pipe, the define an inside and outside in pipe. Initially, after forming tack weld is formed then finish provided seam. Next, pipe cut lengths finally made previously welded The cross sectional area kept to minimum though different thicknesses can be used for maintained constant over range assure that as short time possible with moving axially at highest speed.