TORICH INTERNATIONAL LIMITED
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| Standard | ASTM A269 |
| Matrial | TP201 TP304 TP304L TP316 TP316L TP317 etc |
| Size | I.D.≥6.4mm W.T. ≥0.51mm L: according to customer requirement |
| Applications | For Ocean Air Transportation |
| Manufacture | Tubes are made by seamless process. At the manufacturer's option,, tubing may be furnished either hot finished or cold finished. |
| Surface Condition | The tubes shall be pickled free of scale,. When bright annealing is used, pickling is not necessary. |
| Test and Inspection | Tension Test, Flaring Test, Flange Test, Reverse Test, Hardness Test, Hydrostatic or Nondestructive Electric Test |
| | C | Si | Mn | P≤ | S≤ | Cr | Mo | Ni | Other |
| 201 | ≤0.15 | ≤1.00 | 5.5-7.5 | 0.06 | 0.03 | 16-18 | - | 3.5-5.5 | N≤0.25 |
| 202 | ≤0.15 | ≤1.00 | 7.5-10.0 | 0.06 | 0.03 | 17-19 | - | 4.0-6.0 | N≤0.25 |
| 301 | ≤0.15 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 16-18 | - | 6.0-8.0 | - |
| 302 | ≤0.15 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 17-19 | - | 8-10.0 | - |
| 303 | ≤0.15 | ≤1.00 | ≤2.00 | 0.2 | ≥0.015 | 17-19 | ≤0.6 | 8.0-10.0 | - |
| 304 | ≤0.08 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 18-20 | - | 8-10.5 | - |
| 304L | ≤0.03 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 18-20 | - | 9-13 | - |
| 305 | ≤0.12 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 17-19 | - | 10.5-13 | - |
| 309S | ≤0.08 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 22-24 | - | 12-15 | - |
| 310S | ≤0.08 | ≤1.5 | ≤2.00 | 0.045 | 0.03 | 24-26 | - | 19-22 | - |
| 316 | ≤0.08 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 16-18 | 2-3 | 10-14 | - |
| 316L | ≤0.03 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 16-18 | 2-3 | 12-15 | - |
| 317 | ≤0.03 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 18-20 | 3-4 | 11-15 | - |
| 317L | ≤0.03 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 18-20 | 3-4 | 11-15 | - |
| 405 | ≤0.08 | ≤1.00 | ≤1.00 | 0.04 | 0.03 | 11.5-14.5 | - | ≤0.6 | AL0.1-0.3 |
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.
