Taupānga:
He pai mo te kawe i nga mahi taumaha, te abrasion teitei me nga rawa kiato nui i roto i te taiao ahumahi nui.
Āhuatanga:
Ko nga ahuatanga tino pai o te rapa uhi
Anti-paanga me te avulsion ātete
Adhesion teitei, elongation iti
Ozone/ ultraviolet radiation me te waikura
| Momo | Te ātete abrasion teitei |
| Ko te roa o te roa o te matotoru o te kaha toka (KN/m) | 800-3500 |
| Te whakaroaroa roa | <=1.2% |
| Te matotoru rapa (mm) | runga | 6~10 |
| raro | 1.5-4.5 |
| Te rapa rapa | Momo 1 | <=0.15cm3/1.61KM |
| Momo 2 | <=0.30cm3/1.61KM |
| Whakapiri (N/mm) | >=12 |
| Whānui (mm) | 300-2000 |
| Roa/Rirangi (m) | <=200 |
| Paerewa | AS 1332, BS490,GB7984 |
