1: uniform wall thickness, good internal surface quality

2: High production efficiency. low cost

3: Easy to produce large diameter pipe

4: Short production cycle

5: Product quality is easy to control

1: Poor flexibility, it is not suitable to produce products with large specifications and small batches.

2: Weld seams are often weak links

3: Weld seam cleaning is difficult

4: Ellipticity is not easy to control

5: High requirements on the dimensional accuracy of the strip used

1: can produce small size pipe and capillary material

2: Good flexibility, suitable for producing small batches and many specifications.

3: Uniform performance of all parts of the pipe

1: The uniformity of wall thickness is difficult to control

2: Long production cycle and low yield

3: The equipment is complex and the investment is large.

4: Difficult to produce large diameter pipes