American AASHTO-M180 Technical Standard W-beam highway guardrail | |||
TYPE | Overall Length (mm) | Effection Length (mm) | Norminal Uncoated Thickness (mm) |
TYPE 1 | 4130 | 3810 | 2.67 |
TYPE 2 | 4320 | 4000 | 2.67 |
MECHANICAL PROPERTIES | Material grade: S355JR Yield Point, minimum, 345Mpa (50000psi); Tensile Strength, minimum 483Mpa (70000psi); and Elongation, in 50mm (2 in.),minimum, 12 percent. | ||
NOTES | Thickness of Zinc coating: 550g or 1100g; The beams may galvantzed before or after fabrication; We can customize the length and thickness according to customer requirements. |