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The hollow rock drill rod we supply are produced from the finest quality steel material , designed to withstand the stresses developed by the high powered drilling machines. The major applications include mining, quarrying, tunnelling, welling and civil engineering,
| C | SI | MN | P/S | CR | Ni | MO |
55SiMnMo | 0.53-0.57 | 1.13-1.37 | 0.63-.87 | 0.035 (MAX) |
|
| 0.43-0.47 |
18CrMnNi2MoA | 0.15-0.20 | 0.20-0.35 | 0.7-1.00 | 0.025 (MAX) | 1.65-2.00 | 0.45-0.65 | 0.60-0.80 |
25CrMnSiNi2MoA | 0.20-0.25 | 1.30-1.70 | 1.20-1.50 | 0.025 (max) | 0.20-0.40 | 1.65-2.00 | 0.35-0.45 |
Parameter of the extension rod:
1. Quality performance and field of application for products
Hex steel for Quarrying Rock Blast Hole Integral Drill Rod
and rock drill rod is required to have high anti-impact, abrasion resistance capacity; the products are mainly used for steel for charge rock drill head and rock drill rod.
2. Main grade of drill rod :
30CrNi4Mo 40CrMnMo FF-710 K24729 55SiMnMo 35SiMnMoV18-25Cr2Ni4WA 25CrMnSiNi2MoA
3. Processing route:
EAF + LF + VD + concastng steel billets + hot rolled+cold drawn HEX steel bar+Center hole
King Rock Drills i.e K.R.D. A supplier of Rock Drilling Accessories for the Rock Drilling Rigs, Coal Mining Cutting Picks, Threa/d/Tapered Drilling Rods, Button Drill Bits, Cross Button Drill Bits, Tapered Drill Bits, Integral Drill Rods, Rock Plug Hole Rods, taphole drill rods, rock paving breaker tools, rock self-anchor bolts). DTH drilling tools( rock DTH hammers and rock DTH bits with air consumption 1.5-2.5Mpa, DTH rock hammers and bits with air consumption 0.4-0.7Mpa ). Drilling pipes, Shank adapters, reverse circulation drilling tools, mining tools, cutting picks, tungsten carbide bits, tips, etc.
We always can provide the best, medium, normal quality of rock breaking tools properly with reasonable prices for our clients. And what we are always trying to do is making clients happy with our rock drilling tools and service and what's more is that we believe in is making a little bit effort every day and a giant step will come sooner or later.Our service is 24hours, 7 days a week, 12 months per year as long as you need us.
All your inquiry will be highly appreciated,and all your emails will be replied in no more than one day as long as we see it. Anyway, our company and team are here to provide you with amazing convenience and professional service.
Contact
Q1.Why choose us?
A1. High quality products. Good price, professional team work, Enough ability to export.
Q2. Where are our products applied to?
A2.Mine, tunnel,slope,foundation pit.
Q3. Do you have different quality for different kind of stone?
A3. Yes, according hardness of stone and stone’s feature, we have different typology respectively.
Q4. If we need technical support, can you offer us?
A4. Yes, we have an experienced team, offering our customers additional benefits with specific advice, by our product managerment staff, engineers and technicians.
Q6. Do you offer free samples?
A6. Normally we do not offer free samples, but we could properly adjust according to detailed requirement.
Q7. Is there cheap shipping cost to import to our country?
A7. For small order, Express will be the best, And for bulk order, sea ship way is best but take longer time. For urgent orders, we suggest via air to airport or by Express send to your door.
Q8. Which Express company you send? How many days we can receive?
A8. We are official partner of TNT, UPS, DHL, Fedx. it will take only 3-5 days after we sent.
Q9. When you can reply to me when I send you an Inquiry?
A9. We promise to reply within 24 hours( including holidays) on receipt of your inquiry.
