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Shantui bulldozers can be found on a wide range of small scale and large construction sites, mines and quarries, military bases, heavy industry factories, and large governmental and public Engineering projects.
A Shantui bulldozer is a crawler, equipped with a substantial metal plate (known as a blade), and used to push large quantities of soil, sand, rubble, etc, during construction work. The term "bulldozer" is often used to mean any heavy engineering vehicle (frequently loaders and in particular track loaders), but precisely, the term refers only to a tractor (usually tracked) fitted with a dozer blade.
Most often, bulldozers are large and powerful tracked engineering vehicles. The tracks give them excellent ground hold and mobility through very rough terrain. Wide tracks help distribute the bulldozer s weight over large area (decreasing pressure), thus preventing it from sinking in sandy or muddy ground. Extra wide tracks are known as swamp tracks . Bulldozers have excellent ground hold and a torque divider designed to convert the engine s power into dragging ability, letting the bulldozer use its own weight to push very heavy things and remove obstacles that are stuck in the ground. The Caterpillar D9, for example, can easily tow tanks that weigh more than 70 tons. Because of these attributes, bulldozers are used to clear areas of obstacles, shrubbery, burnt vehicles, and remains of structures.
Sometimes a Shantui bulldozer is used to push another piece of earthmoving equipment known as a "scraper". The towed Fresno Scraper, invented in 1883 by James Porteous, was the first design to enable this to be done economically, removing the soil from the cut and depositing it elsewhere on shallow ground (fill). Many dozer blades have a reinforced center section with this purpose in mind, and are called "bull blades."
The bulldozer s primary tools are the blade and the ripper.
Ripper
The ripper is the long claw-like device on the back of the bulldozer. Rippers can come singly (single shank/giant ripper) or in groups of two or more (multi shank rippers). Usually, a single shank is preferred for heavy ripping. The ripper shank is fitted with a replaceable tungsten steel alloy tip.
Ripping rock lets the ground surface rock be broken into small rubble easy to handle and transport, which can then be removed so grading can take place. Agricultural ripping lets rocky or very hard earth be broken up so otherwise unploughable land can be farmed. For example, much of the best land in the California wine country consists of old lava flows. With heavy bulldozers the lava is shattered, allowing agriculture. Also, hard earth can be ripped and decompacted to allow planting of orchards where trees could not otherwise grow.
Blade
The bulldozer blade is a heavy metal plate on the front of the tractor, used to push objects, and shoving sand, soil and debris. Dozer blades usually come in three varieties:
A Straight Blade ("S-Blade") which is short and has no lateral curve, no side wings, and can be used for fine grading.
A Universal Blade ("U-Blade") which is tall and very curved, and has large side wings to carry more material.
A "S-U" combination blade which is shorter, has less curvature, and smaller side wings. This blade is typically used for pushing piles of large rocks, such as at a quarry.
In military use, dozer blades are fixed on combat engineering vehicles and can optionally be fitted on other vehicles, such as artillery tractors like the Type 73 or M8 Tractor. Combat applications for dozer blades include clearing battlefield obstacles and preparing fire positions.
 

To mention bulldozer market in 2011,the main keyword is unrealistic and worried.The main 12 bulldozer enterprises totally sold 13094 units which is lower about 5.9% year-on-year growth which is the only one lower than 2010 sales in dozer moving machinery.

To mention Chinese bulldozer market,we cann t avoid Shantui.As the passed 11 moths digital from China Construction Machinery Industry Association,Shantui has totally sold 8000 units and the marketing share is 63.86% which stably occupied the first seat of its industry.Hebei Xuagong sold 1000 more units with the Top 2 position.Yishan is the No.3.These three manufacturers are the Top 3 Chinese traditional bulldozer brands and sold totally 10.2 thousand units and take 78% of the whole sales in 2011 and only 81% sales of 2010.Oppositely,Zoomlion and Liugong developed strongly and the increase is higher than the whole industry average level and grew individually 1.6% and 1.5%.

Besides digital,there were a lot of landmark issues in 2011 s China bulldozer market.Such as that the leading enterprises Shantui attack overall and layout two important production lines of Shantui crane and concrete machinery;Hebei Xuangong change it s chief and achieve the first technology revolution of the past 5 years;Liugong acquired Poland HSW construction machinery department