Yini aisiphethofuthi kungani kufanele isetshenziswe?Iziphetho ze-stub ziyi-buttweld fittings ezingasetshenziswa (ngokuhambisana ne-lap joint flange) esikhundleni sokushisela ama-flange entamo ukwenza uxhumano oluvulekile.Ukusetshenziswa kweziphetho ze-stub kunezinzuzo ezimbili: kunganciphisa izindleko eziphelele zamalunga ane-flanged wezinhlelo zamapayipi emazingeni aphezulu wezinto (njengoba i-lap joint flange ingadingi ukuba ibe yinto efanayo yepayipi kanye nesiphetho se-stub kodwa ingaba ibanga eliphansi);isheshisa inqubo yokufaka, njengoba i-lap joint flange ingashintshwa ukuze kube lula ukuqondanisa kwezimbobo ze-bolt.Iziphetho ze-stub zitholakala ngephethini emfushane nende (i-ASA ne-MSS stub ends), ngosayizi abangafika kumayintshi angu-80.
IZINHLOBO ZOKUPHELA KWE-STUB
Iziphetho ze-stub zitholakala ngezinhlobo ezintathu ezihlukene, eziqanjwe “Uhlobo A”, “Uhlobo B” kanye “nohlobo C”:
- Uhlobo lokuqala (A) lukhiqizwa futhi lwenziwe ngomshini ukuze lufane ne-standard lap joint backing flange (le mikhiqizo emibili kufanele isetshenziswe ngokuhlangene).Izindawo zokukhwelana zinephrofayili efanayo ukuvumela ukulayishwa okushelelayo kobuso be-flare
- Iziphetho ze-stub zohlobo B kufanele zisetshenziswe nama-slip-on flange ajwayelekile
- Iziphetho ze-Type C stub zingasetshenziswa noma nge-lap joint noma ama-slip-on flanges futhi zenziwa ngamapayipi.
I-STUB YEPHETHINI EMFUSHANE/ZINDE (ASA/MSS)
Iziphetho ze-stub zitholakala ngamaphethini amabili ahlukene:
- iphethini emfushane, ebizwa ngokuthi i-MSS-A stub iphetha
- iphethini ende, ebizwa nge-ASA-A stub ends (noma isiphetho se-ANSI sobude)
Isikhathi sokuthumela: Mar-23-2021