Rectangular/ Square hollow section are formed from coils and then ran through a series of dies. They are are welded from the inside to form their shape.
They are measured by their outside dimensions and their wall thickness.
Rectangular/ Square hollow section is commonly available in Q195, Q215, Q235, Q345 grade.
It can be purchased online and at any Metal Supermarkets location. It can be cut to your exact specifications.
They are measured by their outside dimensions and their wall thickness.
Chemical composition
Steel Grade: Q195, Q215, Q235, Q345, S235JR, S275JR, SS4007-| Data | Elements（%） | ||||
|---|---|---|---|---|---|
| Materal Grade | C | Mn | S | P | Si |
| Q195 | 0.06-0.12 | 0.25-0.50 | <0.05 | <0.045 | <0.30 |
| Q215 | 0.09-0.15 | 0.25-0.55 | <0.05 | <0.045 | <0.30 |
| Q235 | 0.12-0.20 | 0.30-0.70 | <0.045 | <0.045 | <0.30 |
| Q345 | <0.20 | 1.0-1.6 | <0.04 | <0.04 | <0.55 |
Mechanical property
| Materal Grade | Yield point (Mpa) | Tensile Strength (Mpa) | Elongation(%) |
| Q195 | >195 | 315-430 | 32-33 |
| Q215 | >215 | 335-450 | 26-31 |
| Q235 | >235 | 375-500 | 24-26 |
| Q345 | >345 | 470-630 | 21-22 |
specification, Standard and identificationWelded steel pipe (steel pipe manufactured with a weld) is a tubular product made out of flat plates, known as skelp, that are formed, bent and prepared for welding.
Our team is highly trained and experienced in servicing and producing all types of steel supplies.
