WJ-7 type fasteners

WJ-7 fasteners by the T-bolt, nuts, flat washers, strips, insulating blocks, iron mat board, under-rail mat board (rubber mat board or composite mat board), insulating cushion board, heavy-duty spring washers, flat washers, anchor bolts and buried casing, but also includes under-rail heightening mat board (or filling mat board) and iron mat board heightening under the board board composition.

Strips: Strips are divided into two types, W1 and X2, with W1 being used for general lots and X2 for small resistance lots.

 

 Under-rail matting: under-rail matting is divided into A, B two types, each type of matting is divided into general sections of rubber matting and small resistance sections of composite matting used in two kinds. Special attention is paid to the A class matting is limited to the existing has been used A class matting of high-speed railway maintenance when used.

 

Insulating cushion board: insulating cushion board is divided into 2mm and 6mm two thicknesses, 6mm thick cushion board is used for normal installation, and 2mm cushion board is used for negative adjustment of rail height and position.