Standard: ASTM A179, for Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes
Steel grade: SA179
Size: 5-420mm,0.5-50mm, length,max 12000mm
Applications:
for Boilers, Superheaters,
Heat-Exchangers,
High-pressure Boilers,
Steam Boilers
Cold Condensers and High-Pressure Services,
High-Temperature Services for Boiler Constructions
Heat Treatment:
Tubes are heat treated after the final cold draw pass at a temperature of 1200℉(650℃) or higher
Surface Finish:
Finish Tubes are free of scale.
We have normal heat treatment annealing with black surface.
Have bright annealing with grey and bright surface.
Mechanical Testing:
Flattening Test
Flaring Test
Flange Test
Hardness Test
Chemical Composition
| Material | C | Mn | P | S |
| A179 | 0.06-0.18 | 0.27-0.63 | 0.035max | 0.035max |
Mechanical Property
| Material | Tensile Strength,Mpa | Yield Strength,Mpa | Elongation/% |
| A179 | Min 415 | Min 205 | Max 20 |
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
Our products are sold all over the world, you can rest assured.
