I-ASTM A182 F304 Threaded Union iyingxenye ekhethekile yamapayipi enzelwe ukuxhumeka okusheshayo nokuvikelekile kanye nokuxhunyaniswa kwamapayipi. Le nyunyana isebenzisa imicu ye-Fater kaZwelonke kazwelonke ye-Taper (NPT) kuzo zombili iziphetho, yenza lula ukuhlanganiswa komthungo nezingxenye zamapayipi anombala wesilisa. Isetshenziselwa ukwenza lula ukufakwa, ukugcinwa, kanye nezinqubo zokuhlola ezinhlelweni eziyinkimbinkimbi zamapayipi.
