Austenitic Welded Steel Tube , Pickling Surface Carbon Steel Welded Pipe
Product Details
welded steel pipe
,welding steel tubing
TORICH A249/A249M-14 Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger and Condenser Tubes
Standard: ASTM A 262, ASTM A480/A480M, ASTM A1016/A 1016M,E112,E213,E273,E527,ASME Section VIII, SAE J1086
OD: 20-304.8mm
WT: 0.4-8.1mm
Usage: This standard is applicable to Welded Austenitic Steel Tubes forBoiler, Superheater, heat exchanger and Conderser Tubes
Certification: ISO9001,ISO14001,TS16949
Manufacture:
1.The welded(WLD) tubes shall be made from flat-rolled steel by an automatic welding process with no addition of filler metal.
2.Subsequent to welding and prior to final heat treatment, the tubes shall be cold worked either in both weld and base metal or in weld metal only. The method of cold working may be specified by the purchaser. When cold drawn,the purchaser may specify the minimum amount of reduction in cross-sectional area or wall thickness. or both.
3. Heavily cold worked (HCW) tubes shall be made by applying cold working of not less than 35 % reduction in both wall and weld to a welded tube prior to the final anneal. No filler metal shall be used in the making of the weld.
Note: Special steel grade is also available, according to customer request.
Mechanical Property
| No. | Unified digital code | Steel Grade | Recommended heat treatment system | Tensile property | Hardness | ||||
| Tensile strength Rm/(N/mm2) | Non proportional extension strength Rp0.2/(N/mm2) | Elongation | HBW | HRC | |||||
| ≥ | ≤ | ||||||||
| 1 | S21953 | 022Cr19Ni5Mo3Si2N | 980℃~1040℃ | Rapid cooling | 630 | 440 | 30 | 290 | 30 |
| 2 | S22253 | 022Cr22Ni5Mo3N | 1020℃~1100℃ | Rapid cooling | 620 | 450 | 25 | 290 | 30 |
| 3 | S22053 | 022Cr23Ni5Mo3N | 1020℃~1100℃ | Rapid cooling | 655 | 485 | 25 | 290 | 30 |
| 4 | S23043 | 022Cr23Ni4MoCuN | 925℃~1050℃ | Rapid cooling D≤25mm | 690 | 450 | 25 | - | - |
| Rapid cooling D>25mm | 600 | 400 | 25 | 290 | 30 | ||||
| 5 | S22553 | 022Cr25Ni6Mo2N | 1050℃~1100℃ | Rapid cooling | 690 | 450 | 25 | 280 | - |
| 6 | S22583 | 022Cr25Ni7Mo3WCuN | 1020℃~1100℃ | Rapid cooling | 690 | 450 | 25 | 290 | 30 |
| 7 | S25554 | 03Cr25Ni6Mo3Cu2N | ≥1040℃ | Rapid cooling | 760 | 550 | 15 | 297 | 31 |
| 8 | S25073 | 022Cr25Ni7Mo4N | 1025℃~1125℃ | Rapid cooling | 800 | 500 | 15 | 300 | 32 |
| 9 | S27603 | 022Cr25Ni7Mo4WCuN | 1100℃~1140℃ | Rapid cooling | 750 | 550 | 25 | 300 | - |
| No hardness required of the steel grade, only have to provide the measured data, not as the delivery conditions | |||||||||
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.
If you have another question, pls feel free to contact us
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