The glued insulated rail joint is a type of high-strength rail joint with insulating properties. It positions insulating parts at the rail ends where two rails connect, and a slot insulating plate is clamped on both sides of the joint. Two reinforced rail joints are placed in the grooves of the insulation board and secured by inserting high-strength bolts into reserved holes for the joints.
There are two distinct types of insulation boards, each comprising seven layers. The first type features a mesh glass cloth trough structure. Its first, third, fifth, and seventh layers consist of insulating glue, while the second and sixth layers are mesh glass cloth, and the fourth layer is thickened glass cloth. The second type is an electric heating sheet grooved insulation board, where the first, third, fifth, and seventh layers are insulating film, the second and sixth layers are glass cloth, and the fourth layer is an electric heating sheet with holes.

