ASTM A214 Carbon Steel Heat Exchanger Electric Resistance Welded Pipe
Product Details
carbon steel tube
,heat exchanger tubes
ASTM A214 Electric resistance welded carbon steel heat exchanger and condenser tubes
Applications: for Boilers,Superheaters,Heat-Exchangers, Condensers
Size range: O.D.:6-76mm W.T.:0.9-19.0mm L: according to customer requirement
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
Test and Inspection:
Hardness Requirement
Mechanical Test
- Flattening Test
- Flange Test
- Reverse Test
- Hydrostatic or Nondestructive Electric Test
Steel Grade and Chemical Compositions:
| C | 0.18 |
| Mn | 0.27 to 0.63 |
| P | ≤0.035 |
| S | ≤0.035 |
Mechanical Properties
Tensile Streghth: min ksi[Mpa] 47[325]
Yield Point: min ksi[Mpa] 26[180]
Elongation: ≥35%
Hardness: ≤72HRB
| Tolerance for OD and WT(SA-450/SA-450M) | |||||
| OD in(mm) | + | - | WT in(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 | |||
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