TP321 ASTM A312 Seamless Pipe Annealed Pickled For Power Generation

TP321 features titanium stabilization to effectively prevent intergranular corrosion, making it ideal for high-temperature cyclic applications above 450°C. With oxidation resistance up to 950°C, it maintains excellent weldability and medium-to-high pressure strength - delivering a reliable solution for high-temperature steam lines in power generation.

We stock 2,000 tons of seamless pipes, including full-range TP321 thick-walled options. Standard sizes ship within two weeks. Bulk raw material sourcing reduces costs, while ISO+PED compliance with 100% factory testing and photo documentation helps distributors shorten procurement cycles and minimize inspection risks.

TP321 pipe undergoes a 7-stage process:

1. Piercing
2. Multi-pass cold drawing
3. Solution annealing
4. Pickling & passivation
5. Straightening
6. Eddy current testing
7. Final inspection

Computer-controlled annealing ensures optimal titanium stabilization. Pickling removes scale while passivation enhances surface cleanliness - meeting stringent requirements for high-temperature steam systems.

Implementing:

• Raw material PMI verification
• In-process EC/UT non-destructive testing
• 100% dimensional inspection

All test records and photos are traceable with available SGS/TUV sampling reports. Our three-tier QC system guarantees consistent composition and stable performance across every TP321 batch, streamlining distributors' incoming inspection.

TP321 seamless pipes perform well in power plant systems because the stability of titanium can prevent intergranular corrosion in steam pipelines at 450-800°C. The oxidation resistance at 950°C can withstand exposure to boilers or heat exchangers, while its strength maintained at medium and high pressures ensures the integrity of the steam containment vessel.

The consistent weldability of 321 simplifies the modification of turbine pipelines. The controlled manufacturing of 321 pipeline through solution annealing ensures the formation of titanium carbide and eliminates sensitization during long-term thermal cycling. These features minimize the risk of stress corrosion cracking in the feedwater system and turbine bypass pipelines, reducing unplanned shutdowns.