| ICS | Field |
|---|---|
| 27.060.01 |
Burners and boilers in general Burners and boilers for central heating systems, see 91.140.10 |
| 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, see 11.040.10 Heat exchangers for the chemical industry, see 71.120.30 Heat exchangers for the petroleum and natural gas industry, see 75.180.20 Heating appliances for buildings, see 97.100 |