12° Hexagonal Steel Tapered Rod Carbon Steel Material For Blasting Holes

Place of Origin: Hebei,China (Mainland)
Brand Name: Nailiang
Price :: Negotiation
Payment Terms :: L/C, D/A, T/T, Western Union
Delivery Time :: Within 7-12 days
Packaging Details :: Standard export package
Processing Type :: Forging
Parts Name :: tapered drill rod
Machine Type :: Drilling Tool
Length :: 400mm to 8000mm
Hole diameter :: 19mm to 41mm


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Product Description

Payment & Shipping Terms Supply Capacity
Unit Price:100.0 USDProduction Capacity:100000 pieces per year
Trade Term:FOB,CFR,CIF,DAT,FAS,DDP,DAP,CIP,CPT,FCA,EXWPacking:Standard Export...
Payment Terms:Paypal, L/C, D/P, D/A, T/T, WU, Money GramDelivery Date:Within 7-15 days
Min. Order:10 Piece/Pieces
Means of Transport:Ocean, Air, Land

12° Hexagonal Steel Tapered Rod Carbon Steel Material For Blasting Holes


Hex22mm / Hex25mm Rock Tapered Drill Rod , Blast Hole Drilling Tapered Rod

Tapered equipment affords drillers the ability to change drilling bits whilst still using the same drilling rod. Different taper sizes have different characteristics when it comes to the "knock-off" index – the smaller angle will prevent the bit from spinning.

1. Excellent comprehensive mechanical properties

2. High connection strength and sealability

3. High fatigue strength and long fatigue life

4. Good flushing effect to ensure high drilling rate

5. Steel grade: 95CrMo equivalent to SANDBAR 61.

6. Shank size: hex.22mm×108mm, hex.22mm×159mm.

hex.22mm×80mm, hex.25mm×108mm. hex.25mm×159mm.

7. Taper: 6, 7, 11, 12 degree etc.

8. With highly and strength of resistance on the bending, welding fixed.

9. Highly efficiency on production and steady quality.

10 It's able to keep the hole straight and with long use time.

Types of drill rods




Weight (kg)

Tapered drill rods

Taper Angle: 4, 6, 7, 11, 12 degree

400mm to 8000mm

Hex22mm*108mm Hex25mm*159mm Hex19mm*108mm

1.7 - 24.9

Integral drill steel

Bit diameter: 26mm, 28mm, 30mm, 32mm, 34mm, 36mm, 38mm, 40mm, 42mm

400mm to 4800mm

3 – 15.4

Plug hole rods

Chisel bit diameter: 17mm, 20mm, 22mm

150mm to 710mm

0.6 - 2.9


The tapered drill rod is used for rock drilling, blasting holes and other drilling works connected with various drilling bits in the quarries, coal mines, traffic and other constructions. The normal size of each rod consist of Hex22*108mm shank+ effective rod length+ taper rod end(7°,11°,12°), and the total length from 600mm to 9000mm. The connected body of tapered drill rod with drill bits (mainly button bits) is ideal drilling tool for drilling needs by granite & marble quarries, underground mining, for small blasting hole.

1. The ordinary connection taper degree is 7º, 11º and 12º, other degrees like 4.8º, 6º and 9º are also available upon request;

2. The ordinary shank is Hex22 × 108mm, Hex25 × 159mm and other styles are also available if upon customers' request;

3. The rod length must be specified in order;

4. In order to adapt to different rock conditions, the drill rod is selected by users.

Category: Rock Drill Rods