6.Grade and Chemical Composition ( % )
Grade | C | Mn | P≤ | S≤ | Si | Cr | Mo |
1008 | ≤ 0.10 | 0.30-0.50 | 0.040 | 0.050 | - | - | - |
1010 | 0.08-0.13 | 0.30-0.60 | 0.040 | 0.050 | - | - | - |
1018 | 0.15-0.20 | 0.60-0.90 | 0.040 | 0.050 | - | - | - |
1020 | 0.18-0.23 | 0.30-0.60 | 0.040 | 0.050 | - | - | - |
1025 | 0.22-0.28 | 0.30-0.60 | 0.040 | 0.050 | - | - | - |
1026 | 0.22-0.28 | 0.60-0.90 | 0.040 | 0.050 | - | - | - |
4130 | 0.28-0.33 | 0.40-0.60 | 0.040 | 0.040 | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
4140 | 0.38-0.43 | 0.75-1.00 | 0.040 | 0.040 | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
7.Mechanical properties:
Grade | Condition | Tensile Point (Mpa) | Yield Point (Mpa) | Elongation |
1020 | CW | ≥ 414 | ≥ 483 | ≥ 5% |
| SR | ≥ 345 | ≥ 448 | ≥ 10% |
| A | ≥ 193 | ≥ 331 | ≥ 30% |
| N | ≥ 234 | ≥ 379 | ≥ 22% |
1025 | CW | ≥ 448 | ≥ 517 | ≥ 5% |
| SR | ≥ 379 | ≥ 483 | ≥ 8% |
| A | ≥ 207 | ≥ 365 | ≥ 25% |
| N | ≥ 248 | ≥ 379 | ≥ 22% |
4130 | SR | ≥ 586 | ≥ 724 | ≥ 10% |
| A | ≥ 379 | ≥ 517 | ≥ 30% |
| N | ≥ 414 | ≥ 621 | ≥ 20% |
4140 | SR | ≥ 689 | ≥ 855 | ≥ 10% |
| A | ≥ 414 | ≥ 552 | ≥ 25% |
| N | ≥ 621 | ≥ 855 | ≥ 20% |
9.Cutting to short length packing:
10. FAQ
Q: Are you trading company or manufacturer ?
A: A professional steel pipes materials inventor, manufacturer and solution provider
Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, and it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but you need to pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance , balance before shippment.
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