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Steel grades of steel zasuvok
Cast steels: 09G2SL, 20GL, 35L, 25L, 20L.
Heat-resistant steels: 12MKh, 20KhM, 15Kh5M, 12Kh1MF.
Low-alloy steels: 10G2, 17G1S, 16GS, 09G2S.
Carbon steels: St45, St35, St25, St20.
Steel lug standards
GOST standards:
GOST 380-2005 — Carbon steel;
GOST 1050-2013 — High-quality carbon steel;
GOST 356-80 — Nominal pressures;
GOST 33259-2015 — Valve flanges;
GOST 9544-2015 — Pipeline valves;
GOST 5762-2002 — Steel gate valves.
International standards:
ISO 7005 — Metal flanges;
ISO 5208 — Testing of valves;
EN 558 — Length of structural reinforcement;
EN 1092-1 — Flanges and their joints;
EN 1984 — Steel gate valves.
Table of steel rod weights (kg/piece)
| DN (mm) | Weight (kg) |
| 15 | 4 – 6 |
| 20 | 5 – 8 |
| 25 | 7 – 10 |
| 32 | 9 – 14 |
| 40 | 12 – 18 |
| 50 | 15 – 25 |
| 65 | 20 – 35 |
| 80 | 25 – 45 |
| 100 | 35 – 60 |
| 125 | 50 – 85 |
| 150 | 70 – 120 |
| 200 | 110 – 180 |
| 250 | 180 – 280 |
| 300 | 250 – 400 |
| 350 | 350 – 550 |
| 400 | 450 – 700 |