Dinggin Hardware (Dalian) Co.,Ltd


Home > Knowledge > Content
Classifications of highway guardrail
May 04, 2018

Our highway guardrail products are according to the standard of AASHTO M180-2004.

Four types and two classes of guardrail are provided as follows:


Type I—Zinc coated, 550g/m2 (1.80 oz/ft2) minjmum single-spot.

Type II—Zinc coated, 1100g/m2 (3.6 oz/ft2) minimum single-spot.

Type III—Beams to be painted.

TypeIV—Beams of corrosion resistant steel.


Class A—Base metal nominal thickness—2.67 mm (0.105 in).

Class B—Base metal nominal thickness—3.43 mm (0.135 in).

Related Industry Knowledge