Mugumo we stub unogara uchishandiswa ne lap joint flange, sebacking flange.Stub inoperaanogadzirwa mune ese akajairwa madziro makubvu, uye anowanikwa muhukuru kubva pa1/2”kusvika ku48”.Iwo zviyero zve stub magumo uye ane hukama mativi ekushivirira anotsanangurwa muASME B16.9 chiyero.Chiedza-huremu chinodzivirira Stub Ends (fittings) inotsanangurwa muMSS SP43.Stub magumo anowanzo kuwanikwa muhurefu huviri.MSS (Standard Length) uye ANSI (Kureba Kureba).