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By certification 
Standard : ASTM A213/ASME SA213;
Material: 321H
Size: OD(31.75-88.9mm) X WT(2.11-16.0)
Manufacturing Method: Cold Drawn, Hot Rolled.
Application: For manufacturing boiler, reheater, superheater, heat exchanger, condenser, etc.
Inspection items:
1. Chemical Composition
2. Mechanical Properties
3. Hardness
4. Impact Test
5. Flattening Test
6. Bending Test
7. Flaring Test
8. Flange Test
9. Drift Test
10. Hydrostatic Test
11. Eddy Current Test
12. Ultrasonic Test
13. M. P. I.
14. L. M. T.
15. Size
16. Surface Quality
17. Decarburizing Layer Depth
18. Micro Structure
19. Grain Size Analysis
20. Intercrystalline Corrosion
21. Stabilization Heat Treatment.
22. Erosion Test
Material: 321H
Size: OD(31.75-88.9mm) X WT(2.11-16.0)
Manufacturing Method: Cold Drawn, Hot Rolled.
Application: For manufacturing boiler, reheater, superheater, heat exchanger, condenser, etc.
Inspection items:
1. Chemical Composition
2. Mechanical Properties
3. Hardness
4. Impact Test
5. Flattening Test
6. Bending Test
7. Flaring Test
8. Flange Test
9. Drift Test
10. Hydrostatic Test
11. Eddy Current Test
12. Ultrasonic Test
13. M. P. I.
14. L. M. T.
15. Size
16. Surface Quality
17. Decarburizing Layer Depth
18. Micro Structure
19. Grain Size Analysis
20. Intercrystalline Corrosion
21. Stabilization Heat Treatment.
22. Erosion Test
