321 insimbi engagqwali, eyaziwa nangokuthi yi-UNS S32100 nebanga le-17% kuya ku-19% i-chromium, ama-silfickes angu-1%, ama-pulfur, ama-5 x (c + n) .70%. Mayelana nokumelana nokugqwala, insimbi engagqwali ilingana nebanga le-304 esimweni esivelele futhi liphezulu uma uhlelo lubandakanya insiza ku-797¡Ã♥. I-321 Insimbi Engagqwali ihlanganisa amandla aphezulu, ukumelana nokuqina nokuqina kwesigaba ngokumelana nokuqina okulandelayo kwamanzi.
Insimbi engagqwali 321 \
321h fittings ezifakiwe kusetshenziswa efrowtring, esiqandisini, uwoyela, igesi, i-petrochemical kanye nezimboni ezivuthayo kawoyela. Izinto ezibonakalayo zine-chromium, nickel, titanium nezinye izinto kanye nekhabhoni. I-321H inekhabhoni ephakeme kunezinye izinguqulo. Kunezinhlobo ezahlukene zokufakwa okufana ne-321 \
321H insimbi ye-buttweld esetshenziswa kakhulu kepha kukhona nokufakwa komthungo. Insimbi engenasici i-EXS I-S32100 Pipe Elbow iyindlela efanelekile esetshenziswa kuzicelo eziphezulu zokushisa ukuze ishintshe indlela yokugeleza.