API tricone drill bits tau IADC216 4 5/8 inisi (118mm)

4 5/8" TCI tricone bit o loʻo faʻaaogaina lautele i le suʻeina o vai, suʻesuʻega, pu pailate HDD, faʻapipiʻi faavae, o loʻo i ai se mamanu tutotonu o le pu, o lea e mafai foi ona faʻaaogaina mo le faʻafefe o le taamilosaga.
O le faʻamaufaʻailoga ua faʻamaufaʻailogaina, o le olaga galue e sili atu le umi nai lo paʻu taʻavale taʻavale.
O lenei ituaiga o nifo uamea tricone bit o loʻo i ai se pu totonugalemu lea e talafeagai mo le viliina RC (Reverse Circulation drilling).
IADC216 tricone bit e mafai ona viliina malosi atu le IADC126, o le filifilia o le IADC talafeagai e tusa ai ma le maaa o maa o le laasaga muamua lea o le viliina lelei maualuga.Far Eastern Drilling ose API fa'amaonia fale gaosi o tricone roller bit.