PRODUCT DETAILS

T40 Self Drilling Hollow Bar

T40 self drilling hollow bar features a hollow center for simultaneous drilling and grouting and a rope thread for connection to standard drill tooling. Manufactured by cold rolling heavy wall steel tubing, this drilling hollow bar forms a standard rope thread profile, which increases the yield strength and producing a durable drill rod. It can be elongated by using couplers and easy to penetrate various rocks. It is a reliable and convenient anchoring system which is applied in complicated geological conditions for rock support work. It is widely used in the railway system, metro project, etc.

Specifications

T40 self drilling hollow bar

Size Outer Dia. (mm) Inner Dia. (mm) Ultimate Load (KN) Yield Load (KN) Weight (Kg/m) Thread
T40/20 40 22 539 430 5.6 L/R
T40/16-2 40 21 660 525 6.3 L/R
T40/16-1 40 18 660 525 7.17 L/R
T40/16 40 16 660 525 7.40 L/R

Accessories

Anchor Coupling

Outer Dia. (mm) Length (mm) Weight (Kg) Thread
54 140 1.18 L/R
57 140 1.44 L/R

Anchor Nut

Size Type Key Size (mm) Length (mm) Weight (Kg)
T40 Spherical Collar Nut 65 50 0.86

Anchor Plate

Size Type Dimensions (mm) Thickness (mm) Hole Dia. (mm) Weight (Kg)
T40 Plat Plate 115*115 20 56 1.60
T40 Plat Plate 125*125 12 56 3.50
T40 Plat Plate 200*200 12 56 3.50
T40 Plat Plate 200*200 15 54 4.58
T40 Plat Plate 200*200 30` 56 8.50

Drill Bit Adapter

Size Drill Bit Length (mm) Weight (Kg)
T40 R51 68 0.35

Centralizer

Size Outer Dia. (mm) Length (mm) Weight (Kg)
T40 88 40 0.37

Drill Bits

Type Size Diameter (mm)
EX T40 ø76, ø90, ø115
EXX T40 ø76, ø89, ø90
ES-F T40 ø70, ø76, ø90
ESS-F T40 Ø70, ø90
Clay Bit T40 ø100, ø150

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description

T40 self drilling hollow bar  is a fully threaded hollow bar which can be drilled and grouted into loose or collapsing soils without a casing. The bar features a hollow bore for simultaneous drilling and grouting and a left-hand rope thread for connection to standard drill tooling.

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