ASTM A105N threaded union 3 class 3000 MSS SP-83 admin / December 16, 2018NPT threaded union 3 class 3000 ASTM A105N MSS SP-83Name: Forged Union Size:3″ / DN80 Calss rating: CLASS3000 Material : ASTM A105 Heat treatment: Normalizing Type of Thread: NPT Manufacturing standard: MSS SP-83 Surface: Hot dip galvanized