1. Raws li kev lag luam tshuaj (HG) cov qauv: Integral flanges (IF), threaded flanges (Th), phaj plam- ntawm flanges (PL), weld caj dab flanges (WN), weld caj dab flanges (SO), qhov (socket) weld flanges (SW), weld caj dab flanges (PJ/SE), weld caj dab flanges (PJ/SE), weld caj dab flanges (BL(S)), flange npog (BL).
2. Raws li Petrochemical Industry (SH) cov qauv: Threaded flanges (PT), weld caj dab flanges (WN), weld caj dab flanges (SO), qhov (socket weld flanges) (SW), xoob flanges (LJ), flange npog (tsis tau teev).
3. Raws li Kev Lag Luam Kev Lag Luam (JB) cov qauv: Ib qho flanges, weld caj dab flanges, phaj plam- ntawm flanges, weld caj dab phaj xoob flanges, weld caj dab phaj xoob flanges, flanged nplhaib phaj xoob flanges, flange npog.
4. Raws li lub teb chaws (GB) cov qauv: ib qho flanges, threaded flanges, vuam flanges, necked slip-ntawm flanges, necked socket vuam flanges, vuam nplhaib necked xoob flanges, phaj slip- ntawm flanges, vuam nplhaib phaj plooj {flanges, 3} plating Lub nplhaib phaj xoob flanges, thiab flange npog.
