SA179 Seamless Cold-Drawn High Pressure Boiler Tube

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

Mechanical Property

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