卡特彼勒D6 履带推土机

D6R Track-Type Tractor
Caterpillar has been the world leader in Track-Type Tractors for more than a century. The D6R combines legendary Cat durability and reliability with proven technology designed to reduce emissions while improving your productivity and your bottom line. From rugged structures to fully integrated engine and power train systems, the D6R is a world-class tractor built to help you produce the highest quality work in a variety of applications.