IS: 2643-1975-Pipe threads for fastening purpose: Basic profiles and dimensions
Indian Standard Institution
IS: 2643-1975-Pipe threads for fastening purpose: Basic profiles and dimensions - I.S.I Manak Bhavan 1975 - 3
IS: 2643-1975-Pipe threads for fastening purpose: Basic profiles and dimensions - I.S.I Manak Bhavan 1975 - 3