Flange Classification Method

1. Raws li kev lag luam tshuaj (HG) cov qauv: ib qho flange (IF), threaded flange (Th), phaj slip-on flange (PL), necked butt-weld flange (WN), necked slip-on flange (SO) , socket-weld flange (SW), taub qab-weld xoob flange (PJ / SE), slip-on xoob flange (PJ / RJ), lined flange npog (BL(S)), flange npog (BL) [2].
2. Raws li kev lag luam petrochemical (SH) cov qauv: threaded flange (PT), taub qab-weld flange (WN), slip-on flange (SO), socket-weld flange (SW), xoob flange (LJ), flange npog (tsis teev).
3. Raws li kev lag luam kev lag luam (JB) cov qauv: ib qho flange, taub qab-weld flange, phaj slip-on flange, taub qab-weld xoob flange, slip-on xoob flange, flange xoob flange, flange npog.
4. Raws li lub teb chaws (GB) tus qauv: ib qho flange, threaded flange, taub qab vuam flange, plam-on flange nrog caj dab, qhov (socket) vuam flange nrog caj dab, taub qab vuam nplhaib caj dab xoob flange, phaj slip-on flange, taub qab-welding nplhaib phaj xoob flange, plam-on nplhaib phaj xoob flange, flanged nplhaib phaj xoob flange, thiab flange npog.