日本一本大道高清视频dvd

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Techniques of Concrete brick machine [2012-03-31]

       Concrete brick machinery equipment are extremely useful in drilling holes in most difficult type of material. It can drill holes in seconds in tiles, concrete brick machine, natural stone, granite, bricks etc. It can make a hole in any part of the building like the wall, the ceiling or the floor.
       The equipment has a diamond core drill bit that is fixed at the end of the drill rod in the machine. This is used to drill holes.
       There are many types of concrete brick machine equipments which are all lightweight and portable, so that are easy to carry wherever necessary. They can be used in dry and wet places for drilling purposes. They all work on electricity and are used for various techniques necessary for drilling.
       The various types are electric drilling machine, the hydraulic drilling machine, the pneumatic drilling machine.
       The rotary core and wire lines are the two main types of Concrete brick machine techniques. Rotary drilling is used when boreholes have to be dug and while coring in rocks. Wire line drilling is used for mineral exploration. Here its work is not only to dig a hole but also to get a core sample.

日本一本大道高清视频dvd