| Llyfryn Pibellau Di-dor: | |||
| RHIF. | Enw | Safonol | Graddau |
| 1 | Pibell di-dor dur carbon | ASTM A106/A53/API 5L | Gr.A, GR.B, GR.C |
| 2 | Peipen di-dor Machial | DIN 1629/1626/17100 | ST37,ST52 |
| 3 | Pibell boeler di-dor | ASTM A210/A179/A192 | / |
| 4 | Pip di-dor tymheredd isel | A333 | GR.6 |
| 5 | Pibell pwysau aloi | ASTM A335/A213/A209 | / |
| 6 | Pibell galch | API 5L | X42,X52,X60,x65,X70 |
| 7 | Pibell casio di-dor | API5CT | K55,J55 ,L80, N80,P110 |
| Gorchudd: Du/VamishOi/3PE/FBE/3PP | |||
