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Inox Steel India supplies ASTM A210 / ASME SA210 Seamless Boiler Tubes in Grades A1 and C, engineered for high-pressure steam generation and elevated-temperature service.
Designed for use in industrial boilers, superheaters, economizers, heat recovery units (HRU), and high-pressure piping, these tubes deliver excellent mechanical strength, wall uniformity, and long-term reliability.
ASTM A210 Grade A1 is the widely used cost-effective carbon steel grade, offering good temperature resistance and durability in steam circuits.
Grade C provides higher tensile strength and improved pressure-handling capability, making it suitable for more demanding boiler environments.
All tubes are manufactured using a precision-controlled seamless process that ensures consistent wall thickness and smooth internal surfaces for efficient heat transfer.
These tubes undergo hot finishing, cold drawing, normalizing & stress relief operations, ensuring dimensional accuracy and stability under cyclic thermal stresses.
ASTM A210 / SA210 boiler tubes are manufactured for high-pressure steam, elevated temperature service, and continuous thermal cycling.
Their medium-carbon steel composition provides excellent mechanical strength, weldability, and resistance to scaling inside boilers.
MASTER TECHNICAL DATASHEET:
ASTM A210 / ASME SA210 Boiler Tubes
| Parameter | ASTM A210 / ASME SA210 Boiler Tubes |
|---|---|
| Standard | ASTM A210 / ASME SA210 — Seamless Medium-Carbon Steel Boiler and Superheater Tubes |
| Grades Available | Grade A1 • Grade C |
| Material Class | Medium Carbon Steel |
| Manufacturing Process | Hot-Finished Seamless • Cold Drawn • Normalized • Stress Relieved |
| Size Range (OD) | 12.7 mm to 127 mm |
| Thickness (WT) | 1.5 mm to 12.5 mm |
| Length Options | 6m • 12m • Custom Cut Length • U-Bent for Boiler Coils |
| Mechanical Strength | Tensile: 330–485 MPa (A1) • 485+ MPa (C) |
| Temperature Resistance | Suitable for high-pressure steam & elevated temperatures |
| Corrosion Resistance | Moderate corrosion resistance with good oxidation stability |
| Heat Treatment | Normalized • Stress Relieved • Annealed (as applicable) |
| Surface Finish | Black • Bare • Varnish-Coated • Anti-Corrosion Oil |
| End Finish | Plain Ends • Beveled Ends • Deburred Ends |
| Dimensional Tolerances | OD/WT tolerances per ASTM A210 / SA210 |
| Mandatory Testing | Hydrostatic • Eddy Current • Tensile • Hardness • Flattening • Flaring |
| Special Testing | Ultrasonic Test • NDT • Bend Test • Microstructure |
| Documentation Provided | MTC EN 10204 3.1 • Chemical/Mechanical Reports • NDT Records |
| Key Grade Benefits | A1: Cost-effective boiler-grade carbon steel • C: Higher strength & pressure capability |
| Typical Applications | Boilers • Superheaters • Economizers • Heat Recovery Units • Pressure Piping |
Industrial & Power Boilers
These tubes are the backbone of steam generation systems.
Applications:
Boiler water walls, Boiler bank tubes, Superheater tubes, Reheater coils, Fire tube & water tube boilers.
Recommended Grades:
A1 (general) • C (high pressure)
Superheaters & Economizers
High thermal resistance and uniform wall thickness ensure efficient heat exchange.
Used In:
Steam superheaters, Boiler economizer coils, Heat recovery steam generators (HRSG), Waste heat boilers.
Best Grades:
Grade C
Refinery & Petrochemical Plants
Used in fired heaters and steam-based chemical processing.
Applications:
Process steam reformers, Petrochemical boilers, Fired heater tubes.
Recommended Grades:
A1 / C depending on temperature load
Sugar, Paper & Textile Mills
Industries relying on in-house steam generation.
Used For:
Steam boilers, Industrial heaters, Economizer systems.
Best Grades:
A1 (economy) • C (high-demand)
Furnace & Heat Recovery Systems
Continuous exposure to thermal cycles demands stable metallurgy.
Applications:
HRU/HRSG units, Waste heat recovery boilers, High-pressure steam lines.
Preferred Grades:
C
| Industry | Applications | Recommended Grades |
| Refineries & Petrochemical | Process steam reformers, fired heaters | A1 / C |
| Sugar, Paper & Textile | Industrial boilers, economizers | A1 / C |
| Furnace & Heat Recovery | HRU / HRSG units, steam lines | C |
| Thermal Power Plants | Boiler coils, superheaters | C |
| Application | Recommended Grade | Why |
| Standard industrial boilers | Grade A1 | Economical & reliable |
| High-pressure boilers | Grade C | Higher tensile & yield strength |
| HRSG / Waste heat boilers | Grade C | Thermal shock resistance |
Yes — SA210 Grade C is commonly used in superheaters due to its thermal stability. Yes, U-bent A210 tubes are available with controlled bending radius for boiler coils. Hydrostatic, Eddy Current, Flattening, Flaring, Hardness, and UT (optional). Yes — both A1 and C grades have good weldability with proper preheat control. Are these tubes suitable for superheater applications?
Do you provide U-bent boiler tubes?
What testing is required for A210 tubes?
Can these tubes be welded easily?