Hastelloy bars and rods we offer a comprehensive range of haselloy round bars, in grades hastelloy c22 and others. Known for resistant to general corrosion, crevice corrosion, intergranular attack, pitting and stress corrosion cracking, our range of haselloy round bars are widely used by our clients throughout the world. standard: astm asme sb 574 grades: hastelloy c-4 (uns no. N06455), c-276 (uns no. N10276), hastelloy c 22 (uns no. N06022), hastelloy c