20# / C22 Carbon Steel Tube
Carbon steel 20# is ideal for projects requiring reliable performance at a competitive price, particularly in non-corrosive environments. For harsh conditions, surface treatments (e.g., galvanizing) or alloy steels are recommended
Product Parameters
| Product Name | Carbon Steel Tube 20# | |
| Standard | ASTM: Similar to A283 Grade C or AISI 1020 | |
| DIN: Comparable to St37-2 | ||
| Outer Diameter | Seamless: 1/4″-36″ | Welding: 21.3mm-3620mm |
| Round Tube: 1/2″-10″ | Square Tube/Rectangular Tube: 15x15mm-400x600mm | |
| Wall Thickness | Seamless: 1.25mm-50mm | Welding: 1.65mm-65mm |
| Length | 3-12 meters, Support customization | |
| Surface Process | Bright, Polished, Black | |
| Other Services | Machining(cnc), Centerless Grinding(cg), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc. | |
Chemical Composition
| C | Si | Mn | P | S |
| 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | ≤ 0.035 | ≤ 0.035 |
International Trademark Comparison Table
| AISI/SAE | ISO | DIN | BS | NF | JIS | S |
| 1020 | C22 | CK22 | IC22 | C22/C20 | S20C/S22C | ≤ 0.035 |
Mechanical Properties
| Tensile Strength | ≥410 MPa |
| Yield Strength | ≥245 MPa |
| Elongation | ≥25% |
| Hardness | ≤156 HB (annealed condition) |
Scope of Application
● Structural components (brackets, frames). ● Piping systems and hydraulic cylinders.
● Machinery parts (shafts, gears, bolts). ● Automotive and agricultural equipment.
