T Thread Bars – T40
R25 R32 R38 R51 T30 T40 T76

Self-drilling anchor (SDA) combines drilling, insertion and grouting into one easy operation. It reduces project lead time and installation difficulty. Mayland Metallic Materials Ltd. utilizes low carbon steel in all of its anchor production. Low carbon content in steel increases its ductility, reduces its brittleness, and resists corrosion cracking and carbon embrittlement. This choice of material significantly reduces occurrences where rockbolt may snap or buckle during onsite installation.

Anchor Body Drill Bit Hex Nut Arch Plate Coupler

Test Report Link Goes Here

Anchor Body

Rock Bolt Type Outer Diameter Inner Diameter Weight Cross Section Area Yield Load Ultimate Tensile Load
T40/16 40 mm 16 mm 7.00 kg/m 879 mm2 525 kN 660 kN
T40/20 40 mm 20 mm 5.60 kg/m 726 mm2 430 kN 539 kN

Hex Nut

Hex Nut Type Width Across Flats Length Thread Direction Weight
T40 60 mm 60 mm L 0.90 kg/pc

Drill Bit

EW Clay
Drill Bit Size Drill Bit Type Condition Outer Diameter Weight Thread Direction
T40 EX – Steel Cross Bit Mixed Soils – Soft to Medium Conditions 76 mm 1.70 kg/pc Left
T40 EXX – Carbide Cross Bit Mixed Soils – Soft to Medium Conditions 76 mm 1.70 kg/pc Left
T40 ESSF – Tungsten Carbide Button Bit Medium Soil Condition 76 mm
1.40 kg/pc
T40 EW – Clay Bit Clay and Loose Soil 90 mm 0.87 kg/pc Left


Coupler Type Outer Diameter Length Thread Direction Weight
T40 58 mm 160 mm Left 1.60 kg/pc

Arch Plate

Arch Plate Type Width Length Thickness Hole Diameter Weight
T40 200 mm 200 mm 12 mm 45 mm 3.60 kg/pc