Sachiya Steel International is one of the leading manufacturer and exporter of Hastelloy B3 Tube to Union Fittings, which are made to perfection using high quality steel by our sedulous professionals who possess rich knowledge in this domain. Hastelloy B3 Compression Fittings (UNS N10675) is a nickel - molybdenum alloy with excellent resistance to pitting, corrosion, and stress-corrosion cracking plus, thermal stability superior to that of alloy B-2.