Complaint
| Item | Inch | ID (mm) | tolerance (mm) | Layers of reinfocement | Working Pressure (Bar) | Max Length (m) |
| HWA-32 | 1-1/4" | 32 | 1.0 | 4 | 20 | 60 |
| HWA-38 | 1-1/2" | 38 | 1.0 | 4 | 20 | 60 |
| HWA-51 | 2" | 51 | 1.2 | 4 | 20 | 60 |
| HWA-64 | 2-1/2" | 64 | 1.2 | 4 | 20 | 60 |
| HWA-76 | 3" | 76 | 1.4 | 4 | 20 | 60 |
| HWA-102 | 4" | 102 | 1.6 | 4 | 20 | 60 |
| HWA-115 | 4-1/2" | 115 | 1.6 | 6 | 20 | 60 |
| HWA-127 | 5 | 127 | 1.6 | 6 | 20 | 60 |
| HWA-152 | 6 | 152 | 2.0 | 6 | 20 | 60 |
| HWA-203 | 8 | 203 | 2.5 | 6 | 20 | 60 |
| HWA-254 | 10 | 254 | 3.0 | 8 | 20 | 60 |
| HWA-305 | 12 | 305 | 3.0 | 8 | 20 | 60 |
