Carbon Steel Carbide H22 Hexagonal Drill Rod for Marble Quarry with 7 Degree Taper

Price Negotiable

Price: $3-$300

MOQ: 100 pcs

Delivery Time: 10-15 days

Brand: MTH

Product Description

7 Degree Tapered Drill Rod H22 Hexagon Rock Drilling Tool Mining Jack Hammer Taper Drill Rod

Also known as taper rod or tapered drill steels, this product features a hexagonal shank section for rotation chuck bushing leverage. It includes a forged collar to maintain proper shank striking face position in the rock drill and a tapered bit end. Available lengths range from 0.6m to 3.6m (measured from collar to bit end).

Tapered Drill Rod Advantages:

Through-hardened and heat-treated shank end for high wear resistance and extended service life
Stainless steel flushing tube lining prevents corrosion and breakage
Super tough 23CrNi3MoA, 40SiMnCrNiMo or 55SiMnMo steel, specially designed for wet or dry drilling
Special anti-corrosion oil protects the rod's flushing hole

Standard Specifications:

Drill Rod	Length(mm) with shank	Foot	Weight approx(kg)	Taper	Shank
Tapered Drill Rod	1320mm	4''	4.4	7,11,12 degree	108mm
Tapered Drill Rod	1632mm	5''	5.4	7,11,12 degree	108mm
Tapered Drill Rod	1936mm	6''	6.4	7,11,12 degree	108mm
Tapered Drill Rod	2546mm	8''	8.4	7,11,12 degree	108mm

Taper Rods Grades Recommended:

Grades	Types	Recommended conditions
Superior	G III, T III	1) Rock drills impact energy: ≥76J 2) Drilling depth: ≥ 2.5 m 3) Rock formations: very hard to soft rock (Protodyakonov Hardness Scale: f ≥ 15) 4) Replacements: G rod, G I rod, ROK
Normal	G I, ROK	1) Rock drills impact energy: < 76 J 2) Drilling depth: ≤2.5 m 3) Rock formations: Medium hard to soft rock (Protodyakonov Hardness Scale: f <15) 4) Replacements: G rod
Economy	G	1) Rock drills impact energy: < 76 J 2) Drilling depth: ≤2.5 m 3) Rock formations: Medium hard to soft rock (Protodyakonov Hardness Scale: f <10)