| 1 Other materials on request 2 Bimetallic tubes 3 Double-walled tubes |
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| Group | Type | Alloys1 | |
|---|---|---|---|
| Low-finned tubes (fin height up to 2.5 mm) | GEWA-K | Copper and copper alloys, steel, stainless steel, aluminium alloys | |
| GEWA-KS | Copper and copper alloys, steel, aluminium alloys | ||
| GEWA-N | Copper and copper alloys, steel, stainless steel, aluminium alloys | ||
| GEWA-Spin | Copper and copper alloys, steel | ||
| GEWA-C | Copper and copper alloys | ||
| GEWA-B | Copper and copper alloys, steel | ||
| Medium-high-finned tubes (fin height up to 4.5 mm) | GEWA-D | Copper and copper alloys, aluminium alloys | |
| GEWA-DW | Copper and copper alloys, aluminium alloys | ||
| GEWA-DS | Copper and Copper alloys, aluminium alloys | ||
| High-finned tubes (fin height up to 15 mm) | GEWA-H | Aluminium alloys, copper | |
| GEWA-HS | Aluminium alloys, copper | ||
| GEWA-HB2 | Aluminium (internal tube as desired) | ||
| Safety tubes | GEWA-Safe3 | Copper and copper alloys | |