The corrosion resistant alloy is mainly used in Petroleum chemical industry, like the complex of acid, alkali, salt corrosion medium. CMRI’s  independent grades 3YC7, 3YC8, 3YC18, 3YC19, 3YC21, 3YC21B, 3YC22, 3YC22B, 3YC23, 3YC24, 3YC24B, 3YC25, 3YC58, 3YC61, 3YC62, 6YC1, 6YC2; domestic brand NS111, NS112, NS113, NS131, NS141, NS142, NS143, NS311, NS312, NS313, NS314, NS315, NS321, NS322, NS331, NS332, NS333, NS334, NS335, NS336, NS337, NS341, NS411; foreign brand Incoloy800, Incoloy800H, Incoloy825, Incoloy925, Alloy 20cb3, Inconel600, Inconel690, Inconel625, Inconel625LCF, hastelloyB, hastelloyB-2, hastelloyB-3, hastelloyC, hastelloyC-4, hastelloyC-22, hastelloyC-276, hastelloyC-2000, hastelloyG-3, hastelloyG30, hastelloyX, Monel400, MonelK-500 and other Incoloy, Inconel, Hastelloy, Monel, ATI serial alloy.