Baya ga layin tubalin yumbu na yau da kullun (bulo mai kusurwa huɗu, tubalin rabin murabba'i, layin tubalin tsani, tubali mai sirara, tubalin rabin tsani.), tukwanen chemshun suna da cikakken ikon samar da layin tubali na injiniya don nau'ikan injin niƙa. Kamar layin tubali na ramin ciyarwa, ramin fitarwa, ramin mutum da ake buƙata a yanke shi zuwa siffa ta musamman. Wanda ke tabbatar da cewa an rage gibin da ke tsakanin tayal. Kowane tayal an tsara shi musamman don wurinsa a cikin cikakken kayan tayal, yana tabbatar da dacewa sosai tare da ƙaramin sarari a wuraren haɗin gwiwa. Cikakken saitin layukan tubali na iya inganta ingancin niƙa da kuma guje wa ɓarnar kayan niƙa.
| Sunan tubali | Tsawon | Tsawo | Faɗi-1 | Faɗi-2 |
| Bulo mai kusurwa huɗu | 150 | 50/60/70 | 50 | 50 |
| Bulo mai kusurwa huɗu rabi | 75 | 50/60/70 | 50 | 50 |
| Bulo mai tsani | 150 | 50/60/70 | 50 | 45 |
| Bulo siriri | 150 | 50/60/70 | 22.5 | 21 |
| Bulo mai tsani rabin tsayi | 75 | 50/60/70 | 50 | 45 |
| Naúra: mm | ||||
| Fihirisar Aiki | Jerin 92 | Jerin 95 |
| Al2O3 (%) | ≥ 92 | ≥ 95 |
| Taurin Moh | 9 | 9 |
| Yawan Sha Ruwa(%) | < 0.01 | < 0.01 |
| Ƙarfin lankwasawa, 20C, Mpa | 275 | 290 |
| Lanƙwasawa ƙarfi (Mpa) | 255 | 275 |
| Yawan yawa (g/cm 3) | ≥ 3.60 | ≥ 3.65 |