NAF 42.21—Building networks for fluid

Where 42.21 sits

1. F Construction
2. 42 Civil engineering
3. 42.2 Building networks and lines
4. 42.21 Building networks for fluid

Contains 1 narrower code

• 42.21Y Building networks for fluid

What 42.21 includes

• For details on Industry Class 42.21, refer to the industry descriptions under its subcategories

42.21 in other systems