321 Stainless Steel Heat Exchanger Tube 31.75mm OD 1.65mm Wall ASTM A249 Annealed Pickled 6m
Product Introduction
321 stainless steel heat exchanger tube manufactured to ASTM A249 / A688, with outer diameter 31.75 mm and wall thickness 1.65 mm. Grade 321 is stabilized with titanium to prevent chromium carbide precipitation at high temperatures, providing dependable strength and corrosion resistance for continuous service up to 870°C. A titanium-stabilized exchanger tube for hot-side heat transfer, resisting sensitization and scaling in refinery and petrochemical exchangers.
Every pipe is produced under strict quality control, with full traceability from the raw coil or billet to the finished tube. Mill test certificates, chemical composition reports and mechanical property data are available with every shipment, and third-party inspection by SGS, BV or TUV can be arranged upon request.
Product Specifications
| Parameter | Details |
|---|---|
| Material Grade | 321 |
| Manufacturing Standard | ASTM A249 / A688 |
| Outer Diameter (OD) | 31.75 mm |
| Wall Thickness (WT) | 1.65 mm |
| Length | 6 m (random or cut lengths) |
| Surface Finish | Annealed, bright or pickled |
| End Finish | Plain ends |
| Packaging | Plastic end caps, bundles secured by steel strips or export wooden crates |
Applications
This 321 stainless steel heat exchanger tube is widely used in the following fields:
- Shell and tube heat exchangers
- Condensers and evaporators
- Seawater desalination plants
- Power plant cooling systems
- Chemical and petrochemical heat transfer equipment
Custom sizes and non-standard specifications are available on request. Contact us for a quotation with your required OD, wall thickness and quantity, and our team will reply within 24 hours.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.