ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
C21B0007000000 Blast furnaces 1
C21B0007020000 Internal forms 1
C21B0007040000 with special refractories 1
C21B0007060000 Linings for furnaces 1
C21B0007080000 Top armourings 1
C21B0007100000 Cooling; Devices therefor 1
C21B0007120000 Opening or sealing the tap holes 1
C21B0007140000 Discharging devices, e.g. for slag 1
C21B0007160000 Tuyères 1
C21B0007180000 Bell-and-hopper arrangements 1
C21B0007200000 with appliances for distributing the burden 1
C21B0007220000 Dust arresters 1
C21B0007240000 Test rods or other checking devices 1
C21B0009000000 Stoves for heating the blast in blast furnaces 1
C21B0009020000 Brick hot-blast stoves 1