Product Description
TORICH ASTM A519 AISI4130 AISI4140 Seamless Alloy Steel Tubes
| Standard | ASTM A519 |
| Matrial | AISI4130 AISI4140 |
| Size | OD: 6-350mm WT: 1-50mm Length: 1-12m |
| Manufacture | Tubes are made by seamless process.
At the manufacturer's option, tubing may be furnished either hot finished or cold finished. |
Condition
Sizing Methods | 1. Hot-Finished Mechanical Tubing
2. Cold-Worked Mechanical Tubing
3. Rough -Turned Mechanical Tubing
4. Ground Mechanical Tubing |
| Thermal Treatment: | 1. A-Annealed
2. N-Normalized
3. QT-Quenched and Tempered
4. SR-Stress relieved or Finish Anneal
The tubes shall be pickled free of scale,. When bright annealing is used, pickling is not necessary. |
| Workmanship, Finish, and Appeaerance | The tubing shall be free of laps, cracks, seams, and other defects as is consistent with good commercial practice.
The surface finish will be compatible with the condition to which it is ordered. |
| Grade | C | Si | Mn | P≤ | S≤ | Cr | Mo |
| 4130 | 0.28-0.33 | 0.15-0.35 | 0.40-0.60 | 0.040 | 0.040 | 0.80-1.10 | 0.15-0.25 |
| 4140 | 0.33-0.43 | 0.15-0.35 | 0.75-1.00 | 0.040 | 0.040 | 0.80-1.10 | 0.15-0.25 |
| Grade | Condition | Ultimat Strength ksi MPa | Yeild Strength ksi MPa | Elongation % | Rockwell Hardness B Scale |
| 4130 | HR | 90 621 | 70 483 | 20 | 89 |
| | SR | 105 724 | 85 586 | 10 | 95 |
| | A | 75 517 | 55 379 | 30 | 81 |
| | N | 90 621 | 60 414 | 20 | 89 |
| 4040 | HR | 120 855 | 90 310 | 15 | 100 |
| | SR | 120 855 | 100 689 | 10 | 100 |
| | A | 80 552 | 60 414 | 25 | 85 |
| | N | 120 855 | 90 621 | 20 | 100 |
Production Show
QUALITY CONTROL:
1. Incoming Raw Material Inspection
2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing and Cold Rolling, on line inspection
5. Heat Treatment, +A, +SRA, +LC, +N, Q+T
6. Straightening-Cutting to specified length-Finished Measuring Inspection
7. Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8. Packing and Stocking
100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects.
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, it is according to quantity.
Q: Do you provide samples of carbon seamless steel tube ? is it free or extra ?
A: Yes, we could offer the sample for free charge but need 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.
If you have another question, pls feel free to contact us
TORICH ASTM A519 AISI4130 AISI4140 Seamless Alloy Steel Tubes
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Cold Drawn Seamless Alloy Steel Tube Oiled Surface 1000-1200 mm Length Images
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