
Questions & Answers
Steel grades of galvanized flanges
Low-alloy steels: 10G2, 17G1S, 09G2S.
Carbon steels: 35, 25, 20, St3sp, St3ps.
Galvanized flange standards
GOST standards:
GOST 12822-80;
GOST 12821-80;
GOST 12820-80;
GOST 33259;
GOST 9.301;
GOST 9.307.
European standards:
DIN 2501;
DIN 2633;
DIN 2576;
EN 1092-1.
Table of weights of galvanized flanges
| Nominal bore (DN) | Outer diameter, mm | Thickness, mm | Weight, kg/piece |
| 15 | 95 | 12 | 0.8 |
| 20 | 105 | 14 | 1.1 |
| 25 | 115 | 14 | 1.3 |
| 32 | 135 | 16 | 1.9 |
| 40 | 145 | 16 | 2.3 |
| 50 | 160 | 18 | 3.1 |
| 65 | 180 | 18 | 3.9 |
| 80 | 195 | 20 | 5.0 |
| 100 | 215 | 20 | 6.2 |
| 125 | 245 | 22 | 8.5 |
| 150 | 280 | 24 | 11.5 |
| 200 | 335 | 26 | 17 |
| 250 | 405 | 28 | 25 |
| 300 | 460 | 30 | 34 |






