Cawell Dŵr Dwfn Crwn
Lle sultable yn y lled--ardal agored neu lai dan ddylanwad dyfroedd dyframaethu teiffwnau tymhorol. Yn ôl cwsmer
galw am y cylchedd o 30m i 160m, dyfnder net o 5m i 30m, Ffermio effeithiol hyd at 30000m gradd.
Manyleb
| perimedr | Manyleb pibell fel y bo'r angen | Manyleb braced | Manyleb pibell lawrai | Manyleb pibell sinker |
| 25m-40m | φ200mm | L200型 | φ90mm | φ110mm |
| 40m-60m | φ250mm | L250型 | φ110mm | φ125mm |
| 60m-90m | φ315mm | L315型 | φ110mm | φ160mm |
| 90m-120m | φ400mm | L400型 | φ125mm | φ200mm/250mm |
| 120m-160m | φ450mm | L450型 | φ140mm | φ250mm/315mm |
| 150m-200m | φ500mm | L500型 | φ160mm | φ315mm/355mm |
