a) For the removal of water out of foundation ground,
b) For the removal of water out of pad layer
- for the drainage of wide agricultural fields
- for the drainage of sport terrains
- for the protection of the freeways against underground water and erosion
- for the protection of the rail roads
- for the protection of housing facilities
- for the protection of the support walls in water building ,land reclamation , etc, also for the drainage of the surface water out of the freeways, driveways, streets and airfields.

| CODE | d | s | b | c | t | |
|---|---|---|---|---|---|---|
| 10500000 | Ø110 | 2,2 | 0,8 | 22 | 61 | |
| 10500001 | Ø110 | 2,2 | 0,8 | 22 | 61 | |
| 10500002 | Ø110 | 2,2 | 0,8 | 22 | 61 | |
| 10500003 | Ø110 | 2,2 | 0,8 | 22 | 61 | |
| 10500004 | Ø110 | 2,2 | 0,8 | 22 | 61 | |
| 10500005 | Ø110 | 2,2 | 0,8 | 22 | 61 | |
| 10500020 | Ø110 | 2,2 | 0,8 | 22 | 72 | |
| 10500021 | Ø125 | 2,2 | 0,8 | 22 | 72 | |
| 10500022 | Ø125 | 2,2 | 0,8 | 22 | 72 | |
| 10500023 | Ø125 | 2,2 | 0,8 | 22 | 72 | |
| 10500024 | Ø125 | 2,2 | 0,8 | 22 | 72 | |
| 10500025 | Ø125 | 2,2 | 0,8 | 22 | 72 | |
| 10500040 | Ø125 | 2,2 | 0,8 | 22 | 86 | |
| 10500041 | Ø160 | 2,2 | 0,8 | 22 | 86 | |
| 10500042 | Ø160 | 2,2 | 0,8 | 22 | 86 | |
| 10500043 | Ø160 | 2,2 | 0,8 | 22 | 86 | |
| 10500044 | Ø160 | 2,2 | 0,8 | 22 | 86 | |
| 10500045 | Ø160 | 2,2 | 0,8 | 22 | 86 | |
| 10500060 | Ø200 | 2,2 | 0,8 | 22 | 106 | |
| 10500061 | Ø200 | 2,2 | 0,8 | 22 | 106 | |
| 10500062 | Ø200 | 2,2 | 0,8 | 22 | 106 | |
| 10500063 | Ø200 | 2,2 | 0,8 | 22 | 106 | |
| 10500064 | Ø200 | 2,2 | 0,8 | 22 | 106 | |
| 10500065 | Ø200 | 2,2 | 0,8 | 22 | 106 |
