How to distinguish between straight seam steel pipe and seamless steel pipe?

In general, straight seam steel pipes have fixed sizes, and the more common and popular sizes are six meters, nine meters and twelve meters. This size is also made according to the general needs of customers. But seamless steel pipes generally have very few fixed sizes.

The seamless steel pipe is hot rolled out of round steel by a rolling mill, while the straight seam steel pipe is completed by coiling with strip steel by welding.

Straight seam steel pipe is a steel pipe with only one longitudinal weld. From a steel plate, through multiple processes such as jointing, bending, welding, etc., according to the process, it can be divided into straight seam electric welded steel pipe and straight seam submerged arc welded steel pipe.

Straight seam steel pipe is a steel pipe with the weld seam parallel to the longitudinal direction of the steel pipe.

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