| 2300°F / 1260°C: Fabrik Serat Seramik Bersalut Vermikulit Selimut Kimpalan Sanga Logam Lebur Tugas Berat |
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| Nombor bahagian | Saiz selimut | Berat (kg/pc) | Pengukuhan |
| WCF220V-B | 2.0mmX1mX2m | 2.2kg | wayar ss |
| WCF225V-B | 2.5mmX1mX2m | 2.6kg | wayar ss |
| WCF230V-B | 3.0mmX1mX2m | 2.9kg | wayar ss |