PRE-INSULATED TWIN PIPES SERIES 1
| Production Nominal Diameter | DN | Inch | Steel Pipe Out. Dia. d1 (mm) | Steel Pipe Out. Dia. d2 (mm) | Wall Thickness (t) mm | Distance Between Two Steel Pipes (Lp) mm | HDPE Casing Pipe Out. Dia. D (mm) | HDPE Casing Pipe Wall Thickness (s) mm | HDPE Casing Pipe Inner Dia. (mm) | PUR Thickness (mm) |
Pipe Size L (mt)
|
| DN 15-15/125 | 15-15 | 1/2″-1/2″ | 21.3 | 21.3 | 2 | 19 | 125 | 3 | 119 | 38.2 | 6 |
| DN 20-20/125 | 20-20 | 3/4″-3/4″ | 26.9 | 26.9 | 2 | 19 | 125 | 3 | 119 | 32.6 | 6 |
| DN 25-25/140 | 25-25 | 1″-1″ | 33.7 | 33.7 | 2.3 | 19 | 140 | 3 | 134 | 33.3 | 6 |
| DN 32-32/160 | 32-32 | 1 1/4″-1 1/4″ | 57.4 | 57.4 | 2.6 | 19 | 160 | 3 | 154 | 19.6 | 6 |
| DN 40-40/160 | 40-40 | 1 1/2″-1 1/2″ | 48.3 | 48.3 | 2.6 | 20 | 160 | 3 | 154 | 28.7 | 6 |
| DN 50-50/200 | 50-50 | 2″-2″ | 60.3 | 60.3 | 2.9 | 20 | 200 | 3.2 | 193.6 | 36.5 | 6 |
| DN 65-65/225 | 65-65 | 2 1/2″-2 1/2″ | 76.1 | 76.1 | 2.9 | 20 | 225 | 3.4 | 218.2 | 31.6 | 6 |
| DN 80-80/250 | 80-80 | 3″-3″ | 88.9 | 88.9 | 3.2 | 25 | 250 | 3.6 | 242.8 | 32.5 | 6-12 |
| DN 100-100/315 | 100-100 | 4″-4″ | 114.3 | 114.3 | 3.6 | 30 | 315 | 3.9 | 307.2 | 39.3 | 6-12 |
| DN 125-125/400 | 125-125 | 5″-5″ | 184.7 | 184.7 | 3.6 | 30 | 400 | 5.8 | 388.4 | 9.5 | 6-12 |
| DN 150-150/450 | 150-150 | 6″-6″ | 168.3 | 168.3 | 4 | 40 | 450 | 5.2 | 439.5 | 51.5 | 6-12 |
| DN 200-200/560 | 200-200 | 8″-8″ | 219.1 | 219.1 | 4.5 | 45 | 560 | 6 | 548 | 54.9 | 6-12 |
| DN 250-250/710 | 250-250 | 10″-10″ | 273 | 273 | 5 | 45 | 710 | 7.2 | 695.6 | 74.8 | 6-12 |
