Chigongono cha digirii 45 ndi mtundu wa chigongono chokhala ndi ngodya ya madigiri 45, omwe amagwiritsidwa ntchito kwambiri posintha mayendedwe a mapaipi, ndipo nthawi zambiri amagwiritsidwa ntchito kwambiri pamapaipi.Ikhoza kuchepetsa kutayika kwa kuthamanga mumayendedwe a mapaipi ndikuwongolera kuyenda bwino.
