10kv/60kv-electric Pole,Galvanized Steel Tower,Power Transmission Steel Pole
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Product Description
Design |
1. Design Code | TIA/EIA-222-G/F |
Structure Steel |
2. Grade | Mild Steel | High Tensile Steel |
GB/T 700:Q235B, Q235C,Q235D | GB/T1591:Q345B, Q345C,Q3455D |
ASTM A36 | ASTM A572 Gr50 |
EN10025: S235JR, S235J0,S235J2 | EN10025: S355JR, S355J0,S355J2 |
3. Design Wind Speed | Up to 250 km/h |
4. Allowable deflection | 0.5 ~1.0 degree @ operational speed |
5. Tension strength (Mpa) | 360~510 | 470~630 |
6. Yield strength (t≤16mm) (Mpa) | 355 | 235 |
7. Elongation (%) | 20 | 24 |
8. Impact strength KV (J) | 27(20°C)—Q235B(S235JR) | 27(20°C)—Q345B(S355JR) |
27(0°C)—Q235C(S235J0) | 27(0°C)—Q345C(S355J0) |
27(-20°C)—Q235D(S235J2) | 27(-20°C)—Q345D(S355J2) |
Bolts & Nuts |
9. Grade | Grade 4.8, 6.8, 8.8 |
10. Standards for mechanical properties |
10.1 Bolts | ISO 898-1 |
10.2 Nuts | ISO 898-2 |
10.3 Washers | ISO 6507-1 |
11. Standards for Dimensions |
11.1 Bolts | DIN7990, DIN931, DIN933 |
11.2 Nuts | ISO4032, ISO4034 |
11.3 Washers | DIN7989, DIN127B, ISO7091 |
Welding |
12. Method | CO2 Shielded Arc Welding & Submerged Arc Welding(SAW) |
13. Standard | AWS D1.1 |
Galvanizing |
14. Galvanization standard of steel sections | ISO 1461 or ASTM A123 |
15. Galvanization standard of bolts and nuts | ISO 1461 or ASTM A153 |