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9

Mechanical and plant engineering

Thermal processing engineering

Components and accessories for industrial furnaces and hardening shops

1731.12

Firing chambers (combustion chambers)

1731.14

Annealing hoods

1731.15

Annealing boxes and hardening boxes

1731.16

Annealing and hardening muffels

1731.18

Salt bath vats and pots

1731.20

CFC heating elements

1731.21

CFC plates

1731.22

CFC profiles

1731.23

CFC rings

1731.34

Rapid cooling systems

1731.38

Graphite components

1731.39

Graphite felt

1731.40

Gas heaters

1731.42

Hot blast stoves

1731.43

Heating systems of graphite

1731.69

Quenching baths

1731.71

Refractory linings

1731.81

Inert gas generators

1731.84

Nozzle pipes, ceramic

1731.85

Nozzle pipes, metallic

1731.90

Charging machines

1731.91

Feed frames for annealing plants and heat treating systems