ciri-ciri:
Sijil: FM Approved / UL Listed / BSI / LPCB / NSF 61
Size: DN20×15×15- DN80×65×65
Tekanan: 2.5 Mpa / PN25
Dimensi: DIN EN 10242
Bahan: Besi mudah ditempa DIN EN 1562
Berutas: BSPP (ISO228) / BSPT (ISO7-1)
Permukaan: Hitam / Tergalvani elektrik / Tergalvani celup panas
Tee penurun besi mudah tempa (131R) ialah sejenis pemasangan paip yang menghubungkan dua paip dengan diameter yang berbeza. Ia sering digunakan dalam sistem paip untuk menampung perubahan dalam diameter atau arah paip.
| SAIZ | A (MM) | B (MM) | PCS/CTN. | |
| 3/4″×1/2″×1/2″ | 20×15×15 | 29 | 27 | 120 |
| 1″×1/2″×3/4″ | 25×15×20 | 31 | 29 | 120 |
| 1″×3/4″×3/4″ | 25×20×20 | 34 | 32 | 120 |
| 1-1/4″×1/2″×1″ | 32×15×25 | 33 | 31 | 80 |
| 1-1/4″×3/4″×1″ | 32×20×25 | 36 | 34 | 60 |
| 1-1/4″×1″×1″ | 32×25×25 | 39 | 36 | 60 |
| 1-1/4″×1-1/4″×1″ | 32×32×25 | 44.5 | 41 | 40 |
| 1-1/2″×1/2″×1-1/4″ | 40×15×32 | 35 | 34 | 32 |
| 1-1/2″×3/4″×1-1/4″ | 40×20×32 | 37 | 36 | 36 |
| 1-1/2″×1″×1″ | 40×25×25 | 40 | 36 | 28 |
| 1-1/2″×1″×1-1/4″ | 40×25×32 | 41 | 40 | 20 |
| 1-1/2″×1-1/4″×1″ | 40×32×25 | 45 | 41 | 16 |
| 1-1/2″×1-1/4″×1-1/4″ | 40×32×32 | 45 | 44.5 | 12 |
| 1-1/2″×1-1/2″×1″ | 40×40×25 | 48.5 | 45 | 16 |
| 1-1/2″×2″×1-1/4″ | 40×50×32 | 54 | 53 | 10 |
| 2″×1/2″×1-1/2! | 50×15×40 | 37 | 35 | 10 |
| 2″×3/4″×1-1/2″ | 50×20×40 | 40 | 37 | 6 |
| 2″×1″×1-1/4″ | 50×25×32 | 43 | 40 | 64 |
| 2″×1″×1-1/2″ | 50×25×40 | 42 | 40 | 68 |
| 2″×1-1/4″×1-1/4″ | 50×32×32 | 47 | 44.5 | 60 |
| 2″×1-1/4″×1-1/2″ | 50×32×40 | 47 | 45 | 40 |
| 2″×1-1/2″×1″ | 50×40×25 | 51 | 45 | 42 |
| 2″×1-1/2″×1-1/2″ | 50×40×40 | 51 | 48.5 | 40 |
| 2″×2″×1″ | 50×50×25 | 57 | 51 | 40 |
| 2-1/2″×1/2″×2″ | 65×15×50 | 40.5 | 37 | 36 |
| 2-1/2″×3/4″×2″ | 65×20×50 | 43.5 | 40 | 30 |
| 2-1/2″×1″×2″ | 65×25×50 | 45 | 42 | 24 |
| 2-1/2″×1-1/4″×1-1/2″ | 65×32×40 | 51.5 | 45 | 30 |
| 2-1/2″×1-1/4″×2″ | 65×32×50 | 51.5 | 47 | 30 |
| 2-1/2″×1-1/2″×2″ | 65×40×50 | 54.5 | 51 | 36 |
| 2-1/2″×2″×2 | 65×50×50 | 59.5 | 57 | 36 |
| 3″×1″×2-1/2″ | 80×25×65 | 49.5 | 47.5 | 36 |
| 3″×1-1/4″×2-1/2″ | 80×32×65 | 54.5 | 51.5 | 24 |
| 3″×1-1/2″×2-1/2″ | 80×40×65 | 57.5 | 54.5 | 24 |
| 3″×2″×2-1/2″ | 80×50×65 | 61.5 | 59.5 | 16 |
| 3″×2-1/2″×2-1/2″ | 80×65×65 | 71.5 | 68.5 | 16 |