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CNIS GB/T 1221-92 Heat-resisting steel bars CEN ENV 606 Bar Coded Transport and Handling Labels for Steel Products CEN EN 2064 Bearings Spherical Plain in Corrosion Resisting Steel with Self Lubricating Lin... CEN EN 2236 Pins, Headed, Close Tolerance Shank, in Alloy Steel - Technical Specification CNIS GB/T 227-91 Tool steel--Method of hardenability test CNIS GB/T 13314-91 General specifications of forged steel working rolls for cold rolling CNIS GB/T 4162-91 Forged and rolled steel bars--Method for ultrasonic examination CNIS GB/T 4697-91 Hot-rolled U-type steel for mine timbering CNIS GB/T 6402-91 Steel forgings--Method for ultrasonic examination CEN EN 29658 Steel - Determination of aluminium content - Flame atomic absorption spectromet... CNIS GB/T 325-91 Packing container steel drum CNIS GB/T 13252-91 Packing containers--Steel pails CNIS GB/T 13238-91 Cupper-steel clad plates CNIS GB/T 2970-91 Thicker steel plate--Method for ultrasonic inspection CNIS GB 13236-91 Dip-tapes and steel strapping tapes for Petroleum-Specification CNIS GB/T 710-91 Hot-rolled quality carbon structural steel sheets and strips CNIS GB/T 13237-91 Cold-rolled quality carbon structural steel shects and strips CEN EN 2103-1 Steel, Nickel Base and Cobalt Base Alloy Remelting Stock and Castings - Technic... CEN EN 2103-3 Steel, Nickel Base and Cobalt Base Alloy Remelting Stock and Castings - Technic... CEN EN 2103-2 Aerospace series Steel, Nickel Base and Cobalt Base Alloy Remelting Stock and C... CNIS GB/T 223.73-91 Methods for chemical analysis of iron,steel and alloy--The titanium trichloride... CNIS GB/T 223.74-91 Methods for chemical analysis of iron,steel and alloy--The combustion gravimetr... CNIS GB/T 223.12-91 Methods for chemical analysis of iron,steel and alloy--The sodium carbonate sep... CNIS GB/T 223.11-91 Methods for chemical analysis of iron,steel and alloy--The ammonium persulfate ...