Factory-Made Continuous Flight Auger for

Flat Rock Auger, Butterfly Rock Auger, Drilling Rock Auger

Continuous Flight Augers or CFA is suitable for circulation-free drilling of boreholes with small diameter and deep depths above ground water level.
CFA consists of auger bit and spiral kelly bar.
CFA is equipped with different types of hexagonal coupling depending on the type of soil being drilled, drilling method being used and also the drilling diameter.

There are three categories of Flat or Butterfly Rock Auger:
A) Single-cut Single-spiral Auger
B) Double-cut Single-spiral Auger
C) Double-cut Double-spiral Auger
Drilling Diameter Range: 500~2500mm

Main Applications:
1. The Single Cut and Double Cut Augers are suitable for drilling in weak fractured rock and very dense sand and gravel (Less than 5 MPa)
2. Double Cut Augers are mainly used for bigger diameter uncased boreholes and secant piles
3. Double Cut Auger without rock pilot are recommended for fractured rock or moderately weak to moderately strong rock (5~50 MPa)
4. Single Spiral provides high drilling speed, easy cleaning and low rotary resistance
5. Double spiral has better guiding property and efficient carrying-soil capability, but high rotary resistance
Compared with conical auger, flat auger has better guiding property, better carrying-soil capability, but higher rotary resistance

Forens, founded in early 2000, is specialized in manufacturing bridge bearing, bridge expansion joint, building expansion joint, and construction bearing. Our company has a registered capital of 8, 800, 000 us dollars, it covers an area of 50, 000 square meters, with a construction area of 20, 000 square meters, there are 200 staff now in our company.
Forens is a modern enterprise which has a leading technology in China, and the advanced production equipment, perfect testing equipment.
It has passed the ISO9001: 2008 international quality system certification and ISO14001: 2004 environmental management system certification.
We have a strong technical force and a professional installation team, perfect after-sales service in our company. Over many years, our products have been widely used in highway, railway bridges, public buildings, etc. We have also successfully take participate in many national key projects and many landmark project. Such as: Pudong international airport, Beijing capital international airport and hangzhou international airport, chengdu international airport, xi'an international airport; Shanghai maglev, Shanghai light rail, light rail Beijing, nanjing metro; Shanghai hongqiao hub, and guiyang six broad river bridge, hunan zhuzhou xiangjiang river bridge, wuhan tianxingzhou yangtze river bridge, zhejiang zhujiajian bridge.

1.Safety package, Three steps of packages,pearl cotton,carton and plywood for the transportation
2.100% test before delivering (ensure the quality)
3.Item shipped in about 15-30 working days against payment depends on the quantity 
4.Tracking number will be sent to you as soon as we ship the product