Track pad is one of chassis parts for construction machinery, is a consumable used in construction machinery. Now commonly used in excavators, bulldozers, crawler crane, pavers and other construction machinery above.

Track construction machinery on board from the material up to, can be divided into: steel and rubber. Track steel plate used for large tonnage equipment, rubber track plate is used in a small tonnage of equipment.

Steel track shoe can be divided into: excavators plate, bulldozer plate, the two most commonly used in steel as raw material. Then there is the bulldozer used wet floor, commonly known as "triangle", which is casting plate. Now makes extensive use of a cast plate is used on a crawler crane, the weight of the board of at least tens of Kg, and more up to several hundred Kg, SC10000 Sany crawler crane board on Bauma 2008 Shanghai, more than 800 Kg, which is now, the most important of the track shoe.

Profiles track shoe processing is usually: the use of molding material, the drilling (punching), heat treatment, straightening, painting and other several processes, bulldozers board is a single tendon, usually paint color is yellow; excavator board is usually three ribs, paint color is black. Material procurement profiles now usually 25MnB, material hardness of the final heat treatment is HB364-444.