离岸价格
获取最新报价3000 / Piece
|Minimum Order
位置:
China
最小订单价格:
最小订单:
1 Piece
包装细节:
Plywood cases or as your requirment
交货时间:
Within 7 work days after conform the order
供应能力:
1000 Piece per Month
付款方式:
T/T, L/C, Western Union
联系人 Ms. Ivy
Junziguan, Cangzhou, Hebei
To know which drilling
equipment and which tools are to be used on a site, geological
studies are carried out beforehand. In the case of soft rock, a
high flow pump with fast rotation is often used. Drag bits are
drilling tools specially designed for this type of ground,
especially for water drilling and "lost" tool foundations. Drag
bits allow cuttings to be extracted at a high rate and to remove
them quickly.
Drag bits are drilling tools which are less frequently used than
tricones, although it is a very basic type of drilling tool. They
are made with three blades mounted on the arms of the part. These
bits are made with three chevron blades for ground which is mostly
marl, and terraced or stepped for harder ground
(limestone).
Unlike tricones, drag bits do not have a bearing, which gives them a higher rotary speed. On the other hand, since drag bits cover a larger area, breakage risks may be more frequent. Even though their blades are made of steel reinforced with carbide bits, they are relatively fragile.
The thickness, diameter and weight of drag bits varying depending on the manufacturer.
