Hex 22 Steel Hollow Tapered Drill Rod for Coal Mining
Product Description
A wide taper degree is normally used when drilling with high impact rock drills in medium hard to hard and abrasive rock
formations.
Generally, the lightduty rock drill uses 7 taper or smaller taper degree, the heavyduty rock drill mainly uses 12 taper degree.
The tapered drill rods have a tough life, transferring the percussion energy from rock drill to drilling bit and then into the
rock. They're also subjected to high bending stress, not to mention corrosive water in the flushing hole.
It is forbidden to keep working when the tapered drill rod is bended, otherwise the service life of the tapered drill rod would bedecreased. If the tapered drill rod was sheared, it can be restored by re-machining a new taper.
Features:
1. High strength chromium-molybdenum steel with high fatigue strength and excellent wear resistance
2. Accurate dimension of thread perfectly matches the rock drill
3. Work reliable and very cost-effective
Applications:
• Bolting, drifting
• Bench drilling
• Production drilling
| Model | Taper Degree | Drilling Rod Length | Shank Size |
| Hex.19mm | 4.46, 6, 7, 11 and 12 | 0.4m-4.0m | 83mm,108mm |
| Hex.22mm | 4.46, 6, 7, 11 and 12 | 0.4m-4.8m | 108mm |
| Hex.25mm | 4.46, 6, 7, 11 and 12 | 0.8m-4.8m | 108mm,159mm |
FAQ
Q1: Can I have a sample for testing?
A:Samples are still to be paid but discounted price can be provided.
Q2: Do you have the inspection procedures?
A:100% strict inspection and testing for every order before packing.
Q3: How can i get the after sale services?
A:Free replacement will provide once the problems casued by our product quality.
Q4: Can I have a visit to your factory before the order?
A: Sure, welcome, here is our address: ZheJiang, China.
Company Profile:
Hebei Minetech Machinery Technology Co, Ltd. is located in Hebei province of China. Our company is a professional production and export tapered and thread rod, chisel and button bit and other mining drilling tools enterprises. With our rich experience for over a decade and with professional engineers and sales team, we focus on providing complete solutions for mining machinery.
The information you may like to know before order
1. Methods of Payment:
T/T (Telegraphic Transfer) or Western Union or L/C at sight
2. Handling time for an order
Within 10 days supplied from stock
3. Shipping way
Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or by air
Bulk order: we suggest by air or by sea.
4. Quality Control
We have our own experienced QC.
There will be strict inspection and testing for every order before shipping out.
5. After Services:
a. Our sales team will response for your question within 24 hours (Holidays Excluded)
b. Technical Support will be available in any time
c. Free replacement will provide once the failure confirmed caused by our product quality
