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Certification: | CE, ISO |
Customized: | Customized |
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SA210: Covers medium-carbon seamless tubes for boilers/superheaters (ASME Sec. I).
SA179: Specifies cold-drawn low-carbon tubes for condensers/heat exchangers (ASME Sec. VIII).
Parameter | SA179 (Cold-Drawn) | SA210 (Hot-Finished) |
---|---|---|
OD Tolerance | ±0.10 mm (≤25.4 mm) | ±0.75% of OD |
WT Tolerance | ±10% (Min. WT ≥90%) | ±12.5% |
Straightness | ≤0.5 mm/m | ≤1.5 mm/m |
SA179: Ultra-Smooth Surface (Ra ≤1.6 µm) for fouling resistance in condensers.
SA210-C: Higher strength (Tensile ≥485 MPa) for high-pressure steam service.
Cold-Drawn (SA179): Tighter tolerances for precise tube-sheet fitting.
Chemical Comparison:
Element | SA179 | SA210-C |
---|---|---|
C | ≤0.06% | ≤0.35% |
Mn | 0.27-0.63% | 0.29-1.06% |
P/S | ≤0.035% | ≤0.035% |
Mechanical Tests:
SA179: Flattening Test (No Cracks at 80% Compression).
SA210-C: Hydrostatic Test (≥70 Bar for 5 Sec).
SA179: Power plant condensers, evaporators, LNG heat exchangers.
SA210: Boiler tubes, superheater headers, high-temperature piping.
SA179: VCI Paper + PVC Sleeves (Critical for Surface Protection).
Certification: EN 10204-3.1 MTC with NDE Reports (UT/ET).
Requirement | Recommended Grade |
---|---|
High-Temp Steam | SA210-C (Higher C%) |
Corrosion Resistance | SA179 (Low C% + Smoothness) |
Precision Fitting | SA179 (Cold-Drawn) |
SA179: Stress-Relieved at 600-650°C to restore ductility post-cold working.
SA210-C: Normalized at 900°C for uniform grain structure.