Four-way equal flow or combined flow pipe, connecting four branch pipes of the same size, equalizing the distribution of fluids, commonly used in multi-directional delivery systems (e.g., fire fighting, water supply).
| NO. | Diameter/mm | Thickness/ mm |
| 1 | 15 | 1.5 |
| 2 | 18 | 1.5 |
| 3 | 22 | 1.5 |
| 4 | 28 | 1.5 |
| 5 | 35 | 1.5 |
| 6 | 42 | 1.5 |
| 7 | 54 | 1.5 |
