QN1803 simbi isina tsvina ndeyemhuri yeQN yakagadzirwa neQingtuo Group, iyo inosanganisirawo QN1701, QN1804L, QN1906Mo, uye QN2109Mo. Sechizvarwa chinotevera, high-nitrogen austenitic alloy, QN1803 yakagadzirwa kuti ivhare mukaha pakati pekuita uye mutengo, ichipa chinomanikidza chinotsiva cheyakajairwa 304 simbi isina tsvina.