The bridge slab is a thick steel plate dedicated to the manufacture of bridge structural parts. It is made of carbon steel and low-alloy steel for bridge construction with special steel grades. The end of the steel number is marked with the word q (bridge).

The bridge board (bridge slab) is a thick steel plate dedicated to the manufacture of bridge structural parts. It is made of carbon steel and low-alloy steel for bridge construction with special steel grades. The end of the steel number is marked with the word q (bridge).

The steels most commonly used in bridges include carbon steel, heat treated carbon steel, stainless steel and weathering steel. Stainless and weathering steel bridges are ideal for bridges built in acid or alkaline conditions because they resist corrosion and rust.

Carbon steels for bridge construction include A3q for riveting bridge structures and 16q for welding bridge structures; low-alloy steels for bridge structures include 12Mnq, 12MnVq, 15MnVNq, 16Mnq, etc. The thickness of the bridge steel plate is 4.5-50 mm.