| ICS | Field |
|---|---|
| 27.060.01 |
Burners and boilers in general Burners and boilers for central heating systems, see91.140.10 |
| 27.060.10 | Liquid and solid fuel burners |
| 27.060.20 | Gas fuel burners |
| 27.060.30 |
Boilers and heat exchangers Including steam pressure vessels Heat exchangers for medical use, see11.040.10 Heat exchangers for the chemical industry, see71.120.30 Heat exchangers for the petroleum and natural gas industry, see75.180.20 Heating appliances for buildings, see97.100 |