Questions & Answers
Steel grades of galvanized elbows
Structural steels: 35, 25, 20, 15, 10.
Carbon steels: St20, St2, St3sp, St3ps, St3kp, St10, St1, St15.
Standards for threaded fasteners
GOST Standards:
GOST 9.303-84 — General Requirements for Coatings;
GOST 9.302-88 — Coating Testing Methods;
GOST 9.301-86 — Metallic Coatings;
GOST 9.307-89 — Hot-Dip Galvanizing;
GOST 6357-81 — Cylindrical Pipe Threads;
GOST 8969-75 — Steel Nipples.
International Standards:
ISO 14713 — Corrosion Protection;
ISO 1461 — Hot-Dip Galvanizing;
ISO 49 — Threaded Fittings;
ISO 7-1 — Pipe Threads.
European Standards:
EN ISO 14713 — Zinc Protection against Corrosion;
EN 10240 — Fitting Coatings;
EN ISO 1461 — Hot-dip galvanizing;
EN 10241 — Threaded steel fittings.
Table of weights of galvanized spigots
| Du (DN) | Outer diameter, mm | Length, mm | Weight, kg |
| 15 | 21.3 | 110 | 0,09 |
| 20 | 26.8 | 120 | 0.14 |
| 25 | 33.5 | 130 | 0.22 |
| 32 | 42.3 | 150 | 0.35 |
| 40 | 48.3 | 160 | 0.48 |
| 50 | 60.3 | 180 | 0.75 |
| 65 | 76.1 | 200 | 1.2 |
| 80 | 88.9 | 220 | 1.65 |
| 100 | 114.3 | 250 | 2.6 |
| 125 | 139.7 | 280 | 3.9 |
| 150 | 168.3 | 320 | 5.8 |