YX66-394-788 nronu oke jẹ 360-degree seaming awọ irin ni oke nronu pẹlu ko si dabaru jijo lori dada, o dara ju išẹ mabomire, sisun support asopọ, awọn ọna ati ki o rọrun ikole, ati ki o le fe ni idilọwọ abuku ṣẹlẹ nipasẹ gbona imugboroosi ati ihamọ .
| Iwọn to munadoko (mm) | Ti gbooro (mm) | Sisanra irin (mm) | Akoko inertia ti apakan (CM⁴/m) | Akoko resistance apakan (CM³/m) | Ohun elo |
| 788 | 1000 | 0.6 | 37.53 | 12.41 | hideRoof nronu |
| 0.8 | 49.71 | 6.52 |
