Material: UNI X 1 CrNi 25-21 Description: Standard Specification for Seemless Steel Tubes for Pressure Purposes Group Name: Ferrous Stainless Steel Alloys Sub Group: UNI X 1 CrNi 25-21 Seemless Steel Tubes for Pressure Purposes Application: Intended for Valve, Pump, General Engineering, Automotive and Other Industries Standard: UNI-ITALY