At a glance
| Standard | Product | Type | Typical use |
|---|---|---|---|
| ASTM A213 | Boiler, superheater and heat-exchanger tubes (ferritic and austenitic alloy steel) | Seamless | Boilers, superheaters, heat exchangers |
| ASTM A249 | Boiler, superheater, heat-exchanger and condenser tubes (austenitic steel) | Welded | Heat exchangers, condensers |
| ASTM A269 | Tubing for general service (austenitic stainless steel) | Seamless and welded | Instrumentation, general process tubing |
| ASTM A312 | Pipe (austenitic stainless steel) | Seamless, welded, heavily cold worked | Process and utility piping |
How to choose
- Boiler or heat-exchanger duty with seamless tube: A213.
- Same duty but welded tube is acceptable: A249.
- General-service stainless tubing: A269.
- Pipe sized by NPS and schedule: A312.
Other standards you may see
European (EN), German (DIN) and Japanese (JIS) tube standards are used on many export projects. Ruby Infra Projects lists seamless tubes to ASTM A213/A249/A269/A312 and EN/DIN/JIS standards.
Include these on your enquiry
Standard and edition, grade (for example TP304L or TP316L), outside diameter, wall thickness, length, quantity, supply condition (annealed and pickled), tolerances and the test certificate type. Send your requirement and see 304 vs 316 and seamless vs welded for grade and process guidance.