Niger Tapered Drill Rods

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NigerThreaded drill rods

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Product Description

Tapered drill rods are also known as tapered drill steels, collared rods and pneumatic rods, which are driven by light pneumatic or hydraulic rock drills for drilling small holes with taper bits. The tapered drill rods normally has diameter of H22 and H25, taper degree of 4, 6, 7, 11, and 12, and length of 400mm-5000mm. The tapered drill rods are widely used in mining, tunneling, bolting, quarrying, construction, etc.
Tapered drill rods are also known as tapered drill steels, collared rods and pneumatic rods, which are widely used with handheld pneumatic rock drills, air-leg pneumatic rock drills and hydraulic rock drills in mining, tunneling, bolting, quarrying, construction, etc. Composed of tips, bodies, collars and impact ends, tapered drill rods are used with tapered drill bits.

Production process of taper drill rod:

Production Process for Standard Tapered Drill Rods: Hollow steel inspection—Material Selection—Straightening—Water Hole Machining—Impact End Machining—Collar Upsetting and Extrusion—Collar Inspection—Tip Machining—Heat Treatment—Impact End Heat Treatment—Shot Blasting—Straightening—Inspection—Painting—Packaging—Warehousing

Production Process for Fully Carburized Tapered Drill Rods: Hollow steel inspection—Material Selection—Straightening—Water Hole Machining—Impact End Machining—Collar Upsetting and Extrusion—Collar Inspection—Tip Machining—Fully Carburizing-Quenching-Tempering—Heat Treatment Inspection—Shot Blasting—Straightening—Inspection—Painting—Packaging—Warehousing

Applications；Mining, Tunnel Construction, bolting, Quarrying, etc.

Specification:

Diameter: H19.H22.H25

Shank Size:108mm, 159mm

Taper: 4 degrees, 7 degrees, 11 degrees, 12 degrees

Length: 400mm,800mm,1220mm,1525mm,1830mm,2400mm,and 5000mm.

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