flare union fitting material: iron or brass size:5/8",3/4",15/16",11/8" iron pipe nippleForged bodyUNF and ... threads,zinc platedMaterial:iron/brasssize:5/8",3/4",15/16",11/8"Materials:57-3,59-1.through advanced hot forging ... .2)strictly confirm to ASME,ANSI,JIS,DIN standards.3)Scrupulous quality control,the inspection of raw materials,semi-unfinished products as ...