Official Answer
Answer
Diameter ya pilote (yaba igiti cyangwa umwobo) irakenewe kugirango wirinde isoko yumuraba idahinduka hagati, ibyo bikaba byatera imitwaro idasanzwe. Kuri pilato yimbere, isoko $ O.D. $ igomba kuba ntoya kurenza bore $ I.D. $ murwego rwo hejuru. Kuri pilote yo hanze, isoko $ I.D. $ igomba kuba nini kuruta igiti $ O.D. $ muburebure bwubusa. Niba umuderevu akabije, bizagabanya kwaguka kwinshi kuvugwa muri Q77, biganisha ku 'guhambira' no kunanirwa umunaniro imburagihe kubera ubushyuhe buterwa no guterana.
