1. Material: the wall panel adopts corrugated steel plate as the main body, with longitudinal flanges, circumferential flanges and other structural parts as accessories, welded together into standard steel structure underground wall panel members. The material is Q345 steel plate or Q420 steel plate. The bolts for assembly are made of buried special corrosion resistant carbon structural steel bolts or stainless steel bolts.

2, wall panel shape: arched corrugated steel plate combination or flat corrugated steel plate combination

3. Section shape of prefabricated box steel structure culvert and passage