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About the use of twist drill

Twist using the following procedure:
1, the first twist of the cross member bolt connector into the unit when using the drill bar activities directed coupling nut slot, tighten the coupling nut counterclockwise to insert a predetermined pressure to the drilling area by hand clockwise screwed soil, each rotating about 200 to 250 mm that aside up drilling (if too deep set aside time will be very laborious and inconvenient), under the tick spiral drill Turkey, this is the soil from soil samples of the lot distance.
2, successive back and forth to work 1 meter depth of the need to continue to drill, drill should be clockwise loosen the coupling nut remove part of the connection portion of the cross, the additional portion of the bolt head portion of the drill pipe section II connector into the drill moving parts connection screw clockwise tighten the coupling nut, then the cross-member and the drill pipe connected to work, three, four, five ibid until after work stop.
3, twist drill rod is made of seamless steel pipe wall Po, it is not suitable for use in the hard soil of the region.
4, each time after use should be washed, dried, coated with anti-rust oil to prevent rust.