The spiral steel pipe specification table includes the diameter of the spiral steel pipe (that is, the outer diameter of the spiral steel pipe) in millimeters (mm), the wall thickness (commonly known as several thicknesses) in millimeters (mm), and the material of the spiral steel pipe. There are two types of materials: strip steel and hot coil.
Strip steel refers to the material used to be processed into steel strips. It is a plate produced by steel companies through hot and cold rolling. It comes in large rolls. Strip steel is generally supplied in rolls. It has high dimensional accuracy and good surface quality. , easy processing, material saving and other advantages.
Like steel plates, strip steel is divided into two categories: ordinary strip steel and high-quality strip steel according to the material used; according to the processing method, it is divided into two types: hot-rolled strip steel and cold-rolled strip steel. Hot rolled coil, that is, hot-rolled coil, uses slab (mainly continuous casting billet) as raw material, and is heated to form strip steel by a rough rolling unit and a finishing rolling unit.
| diameter（mm） | wall thickness(mm) | raw materials |
|---|---|---|
| 219-630 | 6-8 | Strip steel |
| 325-630 | 9-10 | Strip steel |
| 426-630 | 11-12 | Strip steel |
| 720-1220 | 6-8 | hot roll |
| 720-1220 | 9-10 | hot roll |
| 720-1220 | 11-12 | hot roll |
| 720-1220 | 14 | hot roll |
| 720-1220 | 16 | hot roll |
| 720-1220 | 18 | hot roll |
| 720-1220 | 20 | hot roll |
| 1320-1620 | 6-8 | hot roll |
| 1320-1620 | 9-10 | hot roll |
| 1320-1620 | 11-12 | hot roll |
| 1320-1620 | 14 | hot roll |
| 1320-1620 | 16 | hot roll |
| 1320-1620 | 18 | hot roll |
| 1320-1620 | 20 | hot roll |
| 1820-2420 | 8 | hot roll |
| 1820-2420 | 9-10 | hot roll |
| 1820-2420 | 11-12 | hot roll |
| 1820-2420 | 15 | hot roll |
| 1820-2420 | 16 | hot roll |
| 1820-2420 | 18 | hot roll |
| 1820-2420 | 20 | hot roll |
