ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
C21D0001320000 Soft annealing, e.g. spheroidising 1
C21D0001340000 Methods of heating (C21D0001060000 takes precedence);; 1
C21D0001380000 Heating by cathodic discharges 1
C21D0001400000 Direct resistance heating 1
C21D0001420000 Induction heating 1
C21D0001440000 in heat-treatment baths 1
C21D0001460000 Salt baths 1
C21D0001480000 Metal baths 1
C21D0001500000 Oil baths 1
C21D0001520000 with flames 1
C21D0001530000 Heating in fluidised beds 1
C21D0001540000 Determining when the hardening temperature has been reached by measurement of magnetic or electrical properties 1
C21D0001550000 Hardenability tests, e.g. end-quench tests 1
C21D0001560000 characterised by the quenching agents 1
C21D0001580000 Oils 1