Fa'atonu mataupu
Fa'ailoga: OPT
Fa'ata'ita'iga: D12.5*15*D15.9*25*D16*100
Mea: HT250
Metotia: Reaming
Parata: n=600rpm
Vc maualuga=800m/min
Fn=0.2mm/rev
Ra: 0.4
tipiina le ola:25,000 pu
Tungsten steel step reamer e mafai ona faʻapipiʻi mea eseese o le mea faigaluega, ma e mafai ona oʻo atu le pu i le 0.6, e mafai ona suitulaga i le laasaga tuai o le faʻaogaina