How To Choose The Right Taper Drill Rod In Different Rock Formations ? Different rock formations and rock drills require different taper angles. For this, Jinzen Drilling can provide taper drill rods with three grades, and lengths available from 600mm (

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How To Choose The Right Taper Drill Rod In Different Rock Formation?

As is well-known, different rock formations and rock drills require different taper angles. When you select the taper drill rod, you want to know, what are the grades of taper drill rod ? How to choose the right taper drill rod in different rock formation?

For this, Jinzen Drilling can provide taper drill rods with three grades, and lengths available from 600mm (2') to 11,200mm (36' 8'' ), (measured from the collar to the tapered end). We make the taper rods grades and recommend table, hoep it can help you.

Taper Rods Grades Recommended Table

Grades	Types	Recommended conditions
Superior	G III, T III, KSW	1) Rock drills impact energy: ≥76J, typically model: YT28 2) Drilling depth: ≥ 2.5 m (8’ 2 27/64”) 3) Rock formations: very hard, hard, medium hard and soft rock Protodyakonov Hardness Scale: f ≥ 15 Uniaxial Compressive Strength: ≥150 Mpa 4) Replacements: G rod, G I rod, ROK
Normal	G I, ROK	1) Rock drills impact energy: < 76 J, typically model: YT24 2) Drilling depth: ≤2.5 m (8’ 2 27/64”) 3) Rock formations: Medium hard and soft rock Protodyakonov Hardness Scale: f <15 Uniaxial Compressive Strength: <150 Mpa 4) Replacements: G rod
Economy	G	1) Rock drills impact energy: < 76 J, typically model: YT24 2) Drilling depth: ≤2.5 m (8’ 2 27/64”) 3) Rock formations: Medium hard and soft rock Protodyakonov Hardness Scale: f <10 Uniaxial Compressive Strength: <100 Mpa