Design1. Design CodeTIA/EIA-222-G/FStructure Steel
2. GradeMild SteelHigh Tensile SteelGB/T 700:Q235B, Q235C,Q235DGB/T1591:Q345B,
Q345C,Q3455DASTM A36ASTM A572 Gr50EN10025: S235JR, S235J0,S235J2EN10025: S355JR, S355J0,S355J2
3. Design Wind SpeedUp to 250 km/h
4.Allowable deflection0.5 ~1.0 degree @ operational speed
5. Tension strength (Mpa)360~510470~630
6. Yield strength (t≤16mm) (Mpa)355235
7. Elongation (%)2024
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. GradeGrade 4.8, 6.8, 8.8
10. Standards formechanical properties10.1 BoltsISO 898-110.2 NutsISO 898-210.3 WashersISO 6507-1
11. Standards for Dimensions11.1 BoltsDIN7990,
DIN931, DIN93311.2 NutsISO4032, ISO403411.3 WashersDIN7989, DIN127B, ISO7091Welding
12. MethodCO2 Shielded Arc Welding & Submerged Arc Welding(SAW)