The technology of welded steel pipe is continuous online production. So the thicker the wall thickness is, the greater the investment in the unit and welding equipment is, and welded steel pipe will have less economical efficiency and practical applicability. The wall thickness is thinner, its input-output ratio will be decreased accordingly. The process of the product determines its advantages and disadvantages. In general, the welded steel pipe with high precision, uniform wall thickness, high brightness of tube inside and outside (surface grade of steel plate determines the surface brightness of steel pipe), can be fixed length wilfully. Therefore, welded steel pipe reflects its economy and aesthetics in the high-precision, low-pressure fluid applications.
The production process of welded steel pipe is simple, the production efficiency is high, the cost is low, and develops rapidly. The strength of the spiral welded pipe is generally higher than that of the straight seam welded pipe. The pipe with larger diameter can be produced with the narrow billet and the pipe with different diameter can also be produced with the same width billets. However, compared with the same length of the straight pipe, the length of weld seam increased by 30% to 100%, and the production rate is low. Therefore, the pipes with smaller diameter are mostly used straight welding, the welded steel pipes with large diameter are mostly used spiral welding.
Prime Steel Pipe is positioned as a steel pipe manufacturer and exporter for all kinds of welded steel pipes in different standard and dimension, including ERW steel pipe, LSAW steel pipe, SSAW steel pipe, etc..