| After-sales Service: | One Year |
|---|---|
| Warranty: | One Year |
| Type: | Seamless |
| Technique: | Hot Rolled |
| Material: | Carbon Steel |
| Surface Treatment: | Hot Rolling, Heat Treatment |
| Customization: |
|---|
Suppliers with verified business licenses
Audited Supplier 
| Steel Grade | R, Skilled steel/ RR, Full Skilled steel |
Chemical Composition | |||
| C | P | S | N | ||
| Maximum | |||||
| ST37.0 | R | 0.17 | 0.04 | 0.04 | 0.009 |
| ST44.0 | R | 0.21 | 0.04 | 0.04 | 0.009 |
| ST52.0 | RR | 0.22 | 0.04 | 0.035 | - |
| Steel grade | Yield strength at bellowing thickness scope (mm) | Tensile Strength N/mm2 |
Elongation | |||||
| ≤16 | >16≤40 | >40≤65 | Length way | Cross way | ||||
| N/mm2 Minimum | % Minimum | |||||||
| ST37.0 | 235 | 225 | 215 | 350~480 | 25 | 23 | ||
| ST44.0 | 275 | 265 | 255 | 420~550 | 21 | 19 | ||
| ST52.0 | 355 | 345 | 335 | 500~650 | 21 | 19 | ||
Suppliers with verified business licenses
Audited Supplier 
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