Ngokwezindlela zokukhiqiza, ingabuye ihlukaniswe ngamapayipi ensimbi ashiselwe ukuthutha uketshezi olunengcindezi ephansi, amapayipi ensimbi ashiselwe, amapayipi ensimbi ashiselwe okuvunguza, njll. Ipayipi lensimbi elingenamthungo lingasetshenziswa kumapayipi ahlukahlukene oketshezi kanye negesi. Amapayipi ashiselwe angasetshenziselwa amapayipi amanzi, amapayipi egesi...
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