Unifit Metalloys is a trusted supplier and manufacturer of Alloy 20 flanges, based in Mumbai, India. The company offers a wide variety of ASTM B462 Alloy 20 flanges such as slip on, weld neck, lap joint, threaded, blind, and square flanges in sizes from 1/2" to 48". Alloy 20 flanges exhibit excellent resistance to caustic alkalis, acids like sulphuric, hydrochloric, hydrofluoric, and ... https://www.unifitmetalloys.com/alloy-20-flanges-manufacturer-exporter.html