Steel Grades

Steel grade & hot dip galvanizing specifications are extremely important for highway road guard railings manufacture.

Steel Grades General for International (American and Europe)

Class A-1: 2.67 mm base metal nominal thickness, Steel Grade Q235 (equivalent to S235JR according to DIN EN10025 and Gr.D according to ASTM A283M)

Class A-2: 2.67 mm base metal nominal thickness, Steel Grade Q345 (equivalent to S355JR according to DIN EN10025 1994 and Gr.50[345] according to ASTM A529M)

Class B-1: 3.43 mm base metal nominal thickness, Steel Grade Q235 (equivalent to S235JR according to DIN EN10025 and Gr.D according to ASTM A283M)

Class B-2: 3.0 mm base metal nominal thickness, Steel Grade Q235 (equivalent to S235JR according to DIN EN10025 and Gr.D according to ASTM A283M)

Steel Grades applied for Australia Guardrail and Accessories production:

Steel Material: HA 350 to AS 1594
Hot Dip Glavanizing: AS 4680 – 70 microns min.