Duplex አረብ ብረት S31803 የ albow butbof `ከፍተኛ ጥንካሬን, ጭንቀትን, መሰባበርን እና ስንጥቅ ለማሻሻል የተነደፈ የማያቁሙ ብረት ነው. Duplex steel S31803 tee butt welded pipe fittings are often used in chemical process industries: such as sulfuric acid production, nitric acid process, phosphoric acid process, ethylene oxide, polypropylene production, PVC, equipment for handling organic and fatty acids, chemical storage and tankers, thermal switch, etc.