A non-standard geometry, hole pattern, or outline that falls outside standard drilling templates — common for retrofits, non-standard shell diameters, or unusual nozzle arrangements.
| Structural Principle | Case-by-case, based on the specific non-standard requirement |
| Typical Drivers | Retrofit replacement, non-standard shell diameter, offset nozzles |
| Engineering Process | Full drawing review before quoting; no fixed spec table |
| Governing Codes | Same TEMA/ASME framework, applied to the custom geometry |
Custom geometry can apply to any structural type or material — the geometry, not the material, is what's non-standard.
At minimum: the existing or required outline geometry, hole pattern or tube layout, material, pressure/temperature conditions, and any existing drawings from the original equipment if this is a retrofit.
Expect additional time upfront for engineering review and drawing approval before fabrication begins — the fabrication itself doesn't necessarily take longer, but the design phase does.
Yes — custom geometry is engineered within the same TEMA/ASME framework as standard products; what's non-standard is the outline or hole pattern, not the governing code.
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.
Send your diameter, material, pressure class and quantity — we'll confirm thickness and price.