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ASTM B338 vs B861 vs B862 Titanium Tube and Pipe
2026-08-11
ASTM B338, B861 and B862 are not interchangeable names for titanium tubing. The intended product and service determine which specification belongs in the purchase order.
Scope Comparison
| Standard | Product scope | Manufacturing route |
|---|---|---|
| ASTM B338 | Tubes for condensers and heat exchangers | Seamless or welded as ordered |
| ASTM B861 | Titanium and titanium-alloy seamless pipe | Seamless |
| ASTM B862 | Titanium and titanium-alloy welded pipe | Welded from flat-rolled product |
Grade Alone Is Not Enough
Grade 2 chemistry does not prove compliance with all three standards. State standard, revision, product form, dimensions, condition and tests.
RFQ Data
- Standard and revision
- Grade and UNS
- Seamless or welded route
- OD/NPS, wall/schedule and length
- Service, ends, tolerances and surface
- Required testing and documentation
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Seamless vs Welded Tube · Grade 2 vs Grade 7 Tube · Tube Applications and Selection