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[China]
Trade Verify
Address: INDUSTRY AREA -HAIYAN ,JIAXING CITY ,ZHEJIANG ,CHINA
Contact name:Richard SHEN
TORICH INTERNATIONAL LIMITED |
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Verified Suppliers
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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
