ASTM A213 TP347H WELDED TUBES

ASTM A213 TP347H Welded Tubes

ASTM A213 TP347H Welded Tubes are high-carbon, niobium-stabilized austenitic stainless steel tubes specially designed for high-temperature and high-pressure service applications. These tubes offer excellent resistance to intergranular corrosion, oxidation, and creep rupture, making them ideal for prolonged exposure to elevated temperatures.

TP347H is an enhanced carbon version of grade 347 stainless steel, providing improved high-temperature strength and creep resistance. The addition of niobium (columbium) stabilizes the material against chromium carbide precipitation during welding and high-heat service, ensuring structural integrity and long-term performance. ASTM A213 TP347H Welded Tubes are widely used in boilers, superheaters, heat exchangers, refineries, and power generation plants.

Specifications of ASTM A213 TP347H Welded Tubes

Product Type	ASTM A213 TP347H Welded Tubes
Material Grade	TP347H Stainless Steel
Standard	ASTM A213 / ASME SA213
Manufacturing Process	Welded (TIG / Laser Welded)
Outer Diameter	1/8" OD to 24" OD (Custom Sizes Available)
Wall Thickness	As per ASTM A213 Standard / Custom Requirement
Length	Single Random / Double Random / Cut Length / U-Bend Tubes
Surface Finish	Annealed & Pickled / Bright Annealed / Polished
End Finish	Plain End / Beveled End
Testing	Hydrostatic Test / Eddy Current Test / PMI Test / Mechanical Testing

Key Features & Benefits

• Excellent High-Temperature Strength: Higher carbon content improves creep and stress rupture resistance.
• Niobium Stabilized Grade: Prevents intergranular corrosion after welding.
• Superior Oxidation Resistance: Performs well in elevated temperature environments.
• Good Mechanical Properties: Maintains structural stability under thermal and pressure stress.
• Excellent Weldability & Fabrication: Suitable for complex forming and fabrication processes.
• Dimensional Accuracy: Manufactured with strict tolerance control as per ASTM standards.
• Long Service Life: Reliable performance in critical high-temperature applications.

Applications of ASTM A213 TP347H Welded Tubes

• Boilers & Superheaters: High-pressure steam systems.
• Heat Exchangers: High-temperature heat transfer equipment.
• Petrochemical Industry: Refinery and processing units.
• Power Plants: Thermal and nuclear power generation systems.
• Oil & Gas Industry: High-temperature process tubing.
• Furnace Components: Elevated heat industrial systems.

Quality Assurance

ASTM A213 TP347H Welded Tubes are manufactured under strict quality control procedures to ensure full compliance with ASTM / ASME standards and customer-specific requirements.

• Chemical Composition Testing: Verification of chromium, nickel, and niobium content.
• Mechanical Testing: Tensile, flattening, flaring, and hardness tests.
• Non-Destructive Testing (NDT): Hydrostatic, eddy current, and ultrasonic testing.
• Positive Material Identification (PMI): Grade confirmation.
• Certification: Mill Test Certificate (MTC) as per EN 10204 3.1.

Conclusion

ASTM A213 TP347H Welded Tubes provide outstanding high-temperature strength, oxidation resistance, and protection against intergranular corrosion. Manufactured according to international standards, these tubes are a dependable choice for boilers, superheaters, and other critical high-heat industrial applications.