No. | (DN) | The thickness of the insulation layer | Outer casing dia. | Min. thickness of the outer casing |
1 | 500 | 30-60 | 598-658 | 4.5 |
2 | 600 | 30-60 | 700-760 | 5.0 |
3 | 700 | 30-60 | 790-850 | 5.0 |
4 | 800 | 30-60 | 891-951 | 5.5 |
5 | 900 | 30-60 | 992-1052 | 6.0 |
6 | 1000 | 30-60 | 1093-1153 | 6.5 |
7 | 1100 | 30-60 | 1194-1254 | 7.0 |
8 | 1200 | 40-100 | 1316-1436 | 8.0 |
9 | 1400 | 50-100 | 1538-1678 | 9.0 |
10 | 1620 | 50-100 | 1738-1840 | 10.0 |