27.4. Ki sa ki se fonksyon an nan koupe kwen?

The steel strip is continuously sheared through the disc shear to become a steel belt of consistent width, and the steel strip used for spiral welded pipes is round edge, and the tolerance of the round edge material in the width direction is larger, and there may be a phenomenon of tolerance exceedance, so the disc shear is used to control the material width to facilitate the forming accuracy of the spiral seam Double - Sided submerged arc soude tiyo.