Summary for planning. Use the current TEMA standard edition for contractual tolerances.
| Item | What buyers should freeze |
|---|---|
| TEMA class | R / C / B as required by project |
| Hole diameter | Per tube OD and joint method (expanded/welded) |
| Ligament | Minimum ligament after drilling |
| Flatness / parallelism | As per drawing and class expectations |
| Surface finish | Gasket face and tube-side requirements |
More: Standards pillar · TEMA classes article.
Every enquiry is checked against governing code, material compatibility and manufacturing feasibility before a quote is issued. Use our product, material, grade and standards guides to freeze the RFQ — then confirm with engineering.