Welded Hot Rolled Steel Tube GB/T 21832 Ss Seamless Pipe For Liquid Delivery
Product Details
stainless steel round tube
,large diameter stainless steel tube
| Standard | GB/T 21832 |
| Matrial | UNS 329J3L |
| Size | OD: 4-1200mm; WT: 0.3-200mm; Length: 1.5-6m |
| Production Method | Single-sided or double-sided automatic arc welding |
| Delivery Condition | Pickled after heat treatment |
| Application | Pressure equipment, liquid delivery and heat exchanger |
| Test and Inspection | Tension Test, Flaring Test, Flange Test, Reverse Test, Hardness Test, Hydrostatic or Nondestructive Electric Test |
| 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 | ||||
| ≥ | ≤ | |||||||
| S21953 | 022Cr19Ni 5Mo3Si2N | 980℃~ 1040℃ | Rapid cooling | 630 | 440 | 30 | 290 | 30 |
| S22253 | 022Cr22Ni 5Mo3N | 1020℃~ 1100℃ | Rapid cooling | 620 | 450 | 25 | 290 | 30 |
| S22053 | 022Cr23Ni 5Mo3N | 1020℃~ 1100℃ | Rapid cooling | 655 | 485 | 25 | 290 | 30 |
| S23043 | 022Cr23Ni 4MoCuN | 925℃~ 1050℃ | Rapid cooling D≤25mm | 690 | 450 | 25 | - | - |
| Rapid cooling D＞25mm | 600 | 400 | 25 | 290 | 30 | |||
| S22553 | 022Cr25Ni 6Mo2N | 1050℃~ 1100℃ | Rapid cooling | 690 | 450 | 25 | 280 | - |
| S22583 | 022Cr25Ni 7Mo3WCuN | 1020℃~ 1100℃ | Rapid cooling | 690 | 450 | 25 | 290 | 30 |
| S25554 | 03Cr25Ni 6Mo3Cu2N | ≥1040℃ | Rapid cooling | 760 | 550 | 15 | 297 | 31 |
| S25073 | 022Cr25Ni 7Mo4N | 1025℃~ 1125℃ | Rapid cooling | 800 | 500 | 15 | 300 | 32 |
| S27603 | 022Cr25Ni 7Mo4WCuN | 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 | ||||||||
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.
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
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