SA 214 / 214M Carbon Steel Tube Resistance Welded For Heat Exchanger And Condenser
SA 214 Electric Resistance Welded Carbon Steel Steel Heat exchanger and Condenser Tubes
Manufacture: Tubes are made by electric-resistance welding.
Surface Condition: The finished tubes are free of scale., slight amount of oxidation is not considered as scale.
Heat treatment: After welding, all tubes are heat treated at a temperature of 1200℉(650℃) or higher and following by cooling in air or in a cooling chamber of a controlled atmosphere furnace.Cold drawn tubes shall be heat treated after the final cold-draw pass at a temperature of 1200℉(650℃) or higher
Chemical Compositions:
| C | Mn | P | S |
| 0.18 | 0.27-0.63 | ≦0.035 | ≦0.035 |
Mechanical Properties:
| Tensile Strength | Yield Point | Elongation | Hardness |
| Min 47ksi 325Mpa | ≥26ksi 180Mpa | ≥ 35% | ≦72HRB |
Tolerance for OD and WT(SA-450/SA-450M):
| OD in(mm) | + | - | WTin(mm) | + | - |
| ＜1''(25.4) | 0.10 | 0.10 | ≤1.1/2''(38.1) | 20% | 0 |
| 1''～1.1''(25.4～38.1) | 0.15 | 0.15 | ＞1.1/2''(38.2) | 22% | 0 |
| ＞1.1/2''～＜2''(38.1～50.8 | 0.20 | 0.20 | |||
| 2''～＜2.1/2''(50.8～63.5) | 0.25 | 0.25 | |||
| 2.1/2''～＜3''(63.5～76.2) | 0.30 | 0.30 | |||
| 3''～＜4''(76.2～101.6) | 0.38 | 0.38 | |||
| 4''～＜7.1/2''(101.6～190.5) | 0.38 | 0.64 | |||
| ＞7.1/2～9''(190.5～228.6) | 0.38 | 1.14 |
Applications: For Boilers,Superheaters,Heat-Exchangers, Condensers.
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