Classification of Seamless Steel pipe

1. Way of producing: Hot-rolled pipe, cold-rolled pipe, cold drawn pipe and extruded tube etc.
2. Appearance: Round steel pipe and special section tube. Beside the square tube and rectangular tube, special section tube also including the elliptical tube, round tube, triangular tubes, hexagonal tubes, raised pipe, plum flower form, etc
3. Material: Common carbon structural pipe, low alloy structural pipe, high quality carbon structural tube, alloy structural pipe and stainless steel pipe.
4. Usage: Boiler steel pipe, geological tubes and oil pipe.