Spiral welded pipe weld types

There are several types of weld seams for spiral welded steel pipes:

1. Steel strip-to-head weld: The steel strip-to-head weld is the weld of the steel plate or steel strip on the spiral seam steel pipe.
2. Butt weld: It is a ring weld formed by joining two steel pipes together.
3. Positioning weld seam: It is the weld used to fix the butt edge before the final welding.