TORICH INTERNATIONAL LIMITED
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ASTM A209 T1 T1a T1b Seamless Alloy Steel Tubes For Boiler and Superheater
Size range: O.D.: 6-420mm W.T.:1-50mm L: according to customer requirement
Steel Grade and Chemical Compositions:
| Element | T1 | T1a | T1b |
| Carbon | 0.10-0.20 | 0.15-0.25 | 0.14max |
| Manganese | 0.30-0.80 | 0.30-0.80 | 0.30-0.80 |
| Phosphorus | 0.025 | 0.025 | 0.025 |
| Sulfur max | 0.025 | 0.025 | 0.025 |
| Silicon | 0.10-0.50 | 0.10-0.50 | 0.10-0.50 |
| Molybdenum | 0.44-0.65 | 0.44-0.65 | 0.44-0.65 |
Mechanical Properties:
| Element | T1 | T1a | T1b |
| Tensile strength min Mpa | 380 | 365 | 415 |
| Yield strength min Mpa | 205 | 195 | 220 |
| Elongation min % | 30 | 30 | 30 |
Manufacture:
Tubes are made by seamless process.
At the manufacturer`s option, tubing may be furnished either hot finished or cold finished.
Test and Inspection:
- Mechanical Test
- Tension Test
- Flaring Test
- Flattening Test
- Hardness Test
- Hydrostatic or Nondestructive Electric Test
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