ASTM A376 TP347H Seamless Pipes Supplier High-Temperature Austenitic Steel Pipes

1. TP347H Austenitic Stainless Steel Pipes Overview

ASTM A376 TP347H seamless pipes are high-temperature austenitic stainless steel tubes stabilized with niobium (Nb). Engineered for superior creep resistance and oxidation resistance up to 815°C (1,500°F), they withstand extreme thermal cycling and corrosive environments. Compliant with ASTM A376 standards, these pipes are solution-annealed for optimal microstructural stability, making them ideal for critical high-pressure applications.

2. TP347H Chemical Composition

The niobium-stabilized chemistry prevents chromium carbide precipitation, enhancing intergranular corrosion resistance.

3. TP347H Equivalent Grades

Globally recognized cross-standard designations:

4. TP347H Mechanical Properties

Post-solution annealing properties per ASTM A376:

5. TP347H Dimensional Tolerances

Manufactured to ASTM A376/A999 specifications:

6. TP347H High-Temperature Applications

Designed for critical thermal and corrosive environments:

• Power Generation: Superheaters, reheaters, and boiler tubes in coal-fired/thermal plants.

• Petrochemical: Catalytic cracker units, furnace manifolds, and reformer tubes.

• Aerospace: Exhaust systems and heat exchangers.

• Nuclear: Steam generator tubing and pressurizer components.

• Industrial Processing: High-temperature fluid transfer systems.

Why Choose Our TP347H Seamless Pipes?

• Precision cold-drawn/hot-finished for uniform wall consistency.

• 100% non-destructive testing (UT/ET) and hydrostatic certification.

• Traceable mill test reports (MTRs) compliant with ASTM A376.

• Custom sizes: OD 6mm–914mm, Wall Thickness 1.24–50mm.