Material: ASTM A791 Grade 29-4 Description: Standard Specification for Unannealed Ferritic Stainless Steel Tubing Group Name: Ferrous Stainless Steel Alloys Sub Group: ASTM A 791/A 791M Unannealed Ferritic Stainless Steel Tubing Application: Intended for Valve, Pump, General Engineering, Automotive and Other Industries Standard: AS-AUSTRALIA