Qee hom duplex steel cov fittings yog pob tw whaded wittings, lauj kaub, redlucers, couplings, cov khoom siv, thiab ntxiv. Lwm cov nta ntawm qhov kev haum no yog zoo corrosion tsis kam, pitting thiab kev ntseeg siab, thev taus siab, cov khoom siv tshuaj thev naus laus zis, tshuaj lom neeg tos. Ntxiv rau, nws yog siv hauv cov ntawv thov hauv qab no hauv kev lag luam tshuaj, pulp thiab daim ntawv kev lag luam, condenser, offshore kev lag luam, thiab lwm yam.