The three types are divided by production process, which directly affects its performance and cost:
|
type |
Production process |
Maximum working pressure |
Typical cost ($/ton) |
|
Type S |
Hot rolled seamless extrusion |
20MPa |
850-1000 |
|
Type E |
High frequency resistance welding |
15MPa |
650-800 |
|
Type F |
Continuous furnace welding process |
5MPa |
450-600 |
Selection Recommendation:
In the field of oil and gas transportation, it is recommended to select Type S seamless pipes, because seamless pipes have no welded joints, which are excellent in terms of compressive strength and overall safety, and the inner wall of seamless pipes is smooth, which reduces fluid friction.
For scaffolding in construction, it is recommended to use Type E welded pipes, which have sufficient strength and reduce costs by 30%, and are easy to install and disassemble, which speeds up efficiency.
