Differences between SMLS, ERW, LSAW and SSAW steel pipes
In the field of pipeline manufacturing, there are different types of steel pipes, mainly seamless steel pipes (SMLS), electric resistance welded steel pipes (ERW), straight seam welded steel pipes (LSAW) and spiral welded steel pipes (SSAW). They differ in manufacturing processes, application areas and performance characteristics. The following will introduce the differences between these types of steel pipes in detail.
Features | SMLS | ERW | LSAW |
Manufacturing process | Hot rolled/cold rolled | Resistance welding | Long-seam welding |
Structure | No welds | Welding | Welding |
Application scope | High temperature and | Medium pressure and | Large diameter and high pressure applications |
Cost | High | Lower | Medium |
Mechanical properties | Excellent | Good | Good |
Pipe diameter range | Small to medium | Small to large | Large |
Welding position | None | Longitudinal | Longitudinal |
SMLS, ERW, LSAW and SSAW steel pipes each have their own unique manufacturing processes and applicable fields. Choosing the right type of steel pipe is crucial to the safety and economy of the project. According to the project requirements, the reasonable selection of steel pipe type can improve the project efficiency and reduce costs.
