Questions & Answers
Low-alloy steels: 10G2, 17G1S, 09G2S.
Structural steels: 35, 25, 20, 10.
Carbon steels: St35, St25, St20, St10.
GOST Standards:
GOST 9.303-84 — General Requirements;
GOST 9.302-88 — Coating Inspection Methods;
GOST 9.301-86 — Metallic Coatings;
GOST 9.307-89 — Hot-Dip Galvanizing;
GOST 17378-2001 — Dimensions and Types;
GOST 17380-2001 — Technical Specifications;
GOST 24950-81 — Stamped-Welded Elbows;
GOST 30753-2001 — Welded Sector Elbows;
GOST 17375-2001 — Seamless Elbows.
International Standards:
ISO 14713 — Corrosion Protection;
ISO 1461 — Hot-dip galvanizing;
ISO 5251 — Welded fittings;
ISO 3419 — Steel fittings.
European standards:
EN ISO 14713 — Corrosion protection;
EN 10240 — Protective coatings for fittings;
EN ISO 1461 — Hot-dip galvanizing;
EN 10253-4 — Alloy steel fittings;
EN 10253-2 — Pressure fittings.
Table of weights of galvanized 90° elbows
| Du (DN) | Outer diameter, mm | Wall thickness, mm | Weight, kg |
| 15 | 21.3 | 2.8 | 0.09 |
| 20 | 26.8 | 2.8 | 0.13 |
| 25 | 33.5 | 3.2 | 0.21 |
| 32 | 42.3 | 3.2 | 0.32 |
| 40 | 48.3 | 3.5 | 0.45 |
| 50 | 60.3 | 3.5 | 0.68 |
| 65 | 76.1 | 3.5 | 1.05 |
| 80 | 88.9 | 4.0 | 1.45 |
| 100 | 114.3 | 4.0 | 2.35 |
| 125 | 139.7 | 4.5 | 3.6 |
| 150 | 168.3 | 4.5 | 5.4 |
| 200 | 219.1 | 6.0 | 10.2 |
Table of weights of galvanized 45° elbows
| Du (DN) | Weight, kg |
| 15 | 0.06 |
| 20 | 0.09 |
| 25 | 0.14 |
| 32 | 0.22 |
| 40 | 0.3 |
| 50 | 0.46 |
| 65 | 0.72 |
| 80 | 1.0 |
| 100 | 1.65 |
| 125 | 2.5 |
| 150 | 3.8 |
| 200 | 7.2 |