I-GB/T 5310 uhlobo lwepayipi lebhoyila.

Izinto ezimele yona zingama-20g, 20mng, 25mng. Iyinsimbi yekhabhoni ephakathi nendawo ene-manganese encane.

Ubude bokulethwa kweshubhu lebhoyila buhlukaniswe ngezinhlobo ezimbili: usayizi ozinzile nosayizi ophindwe kabili. Intengo yeyunithi yeshubhu ngayinye yasekhaya ibalwa ngokuya ngobude obubekiwe, kanti intengo yeshubhu ngayinye ibalwa ngokuya ngesisindo sangempela.

Isikali esiphindwe kabili singahlukaniswa ngezinhlobo ezintathu:

Irula elifushane: elisetshenziselwa ukulungisa ipayipi lensimbi elikhethekile elingenamthungo esisekelweni;

Ipayipi lensimbi elingenamthungo elinobukhulu obulinganayo bodonga olunesimo esikhethekile (ububanzi bangaphandle bungaphansi kuka-32mm): elisetshenziselwa isakhiwo semishini, imishini ye-hydraulic enokunemba okuphezulu kanye nokuqedwa okuhle kobuso bepayipi lensimbi elingenamthungo ngokunemba;

Ipayipi lensimbi elingenamthungo elijwayelekile (ububanzi bangaphandle obungaphezu kuka-32mm noma ububanzi bangaphakathi obungaphansi kuka-40mm): Lisetshenziselwa izingxenye ezahlukene zesakhiwo, amathuluzi kanye nezingxenye zemishini.