Kupatula pa choyikapo njerwa cha ceramic (njerwa ya rectangle, njerwa ya theka rectangle, zoyikapo njerwa za makwerero, njerwa yopyapyala, njerwa ya theka la makwerero.), zoyikapo njerwa za chemshun zili ndi mphamvu zonse zoperekera zoyikapo njerwa zopangidwa ndi akatswiri amitundu yosiyanasiyana ya mill mill. Monga choyikapo njerwa cha dzenje lodyetsera, dzenje lotulutsa, dzenje la munthu liyenera kudulidwa kuti likhale lapadera. Izi zimatsimikizira kuti mipata pakati pa matailosi imachepetsedwa. Tailo iliyonse imapangidwa mwapadera kuti ikhale pamalo ake mu zida zonse za matailosi, kuonetsetsa kuti ikugwirizana bwino ndi malo ochepa pamalo olumikizirana. Seti yonse yabwino kwambiri ya zoyikapo njerwa imatha kukonza bwino ntchito yopera ndikupewa kuwononga zinthu zopera.
| Dzina la njerwa | Utali | Kutalika | M'lifupi-1 | M'lifupi-2 |
| Njerwa yozungulira | 150 | 50/60/70 | 50 | 50 |
| Njerwa ya theka lamakona anayi | 75 | 50/60/70 | 50 | 50 |
| Njerwa ya makwerero | 150 | 50/60/70 | 50 | 45 |
| Njerwa yopyapyala | 150 | 50/60/70 | 22.5 | 21 |
| Njerwa ya theka la makwerero | 75 | 50/60/70 | 50 | 45 |
| Chigawo: mm | ||||
| Chiyerekezo cha Magwiridwe Antchito | Mndandanda wa 92 | Mndandanda wa 95 |
| Al2O3 (%) | ≥ 92 | ≥ 95 |
| Kuuma kwa Moh | 9 | 9 |
| Kuchuluka kwa Kuyamwa kwa Madzi (%) | < 0.01 | < 0.01 |
| Mphamvu yopindika, 20C, Mpa | 275 | 290 |
| Kupinda mphamvu (Mpa) | 255 | 275 |
| Kuchuluka kwa zinthu (g/cm3) | ≥ 3.60 | ≥ 3.65 |