25FT Welding Drill Pipe
Steel Pipe Round Drill Pipes For Rock Drilling Tools
Product Description
Down the hole drill pipes play a significant role in all DTH drilling, regardless of application, rock type, hole depth or drill rig. The key features of a high quality DTH tube are durability, accuracy and manageability. Sinodrills DTH drill pipes are made of superior alloy and the both thread ends are friction welded to the seamless steel pipe.The high pressure air is delivered to DTH hammer by DTH drill pipe, simultaneously it transfers the rotation and press force to the DTH hammer.
| OD A |
Wall B |
Length L |
Weight lbs |
ID Pin C |
Across Flat D |
Flat Length E |
Dist From Shoulder F |
Flat Length G |
Across Flat H |
Connection |
| 3.5" | .315" | 20' | 245 | 1.75" | 2.75" | 12.5" | 3.25" | 2.25" | 3.25" | 2 3/8IF |
| 4.5" | .337" | 20' | 345 | 1.75" | 3" | 12.5" | 3.25" | 2.375" | 4" | 3 1/2 Reg |
| 4 1/2" | .337" | 20' | 345 | 2 1/8" | 3" | 12 1/2" | 3 1/4" | 2 3/8" | 4" | 2 7/8 IF |
| 4 1/2" | .337" | 25' | 430 | 1 3/4" | 3" | 12 1/2" | 3 1/4" | 2 3/8" | 4" | 3 1/2 Reg |
| 4 1/2" | .337" | 25' | 430 | 2 1/8" | 3" | 12 1/2" | 3 1/4" | 2 3/8" | 4" | 2 7/8 IF |
| 4 1/2" | .337" | 30' | 510 | 1 3/4" | 3" | 12 1/2" | 3 1/4" | 2 3/8" | 4" | 3 1/2 Reg |
| 4 1/2" | .500" | 25' | 510 | 1 3/4" | 3" | 12 1/2" | 3 1/4" | 2 3/8" | 4" | 3 1/2 Reg |
| 4 1/2" | .500" | 30' | 615 | 1 3/4" | 3" | 12 1/2" | 3 1/4" | 2 3/8" | 4" | 3 1/2 Reg |
| 4 1/2" | .750" | 25' | 805 | 1 3/4" | 3" | 12 1/2" | 3 1/4" | 2 3/8" | 4" | 3 1/2 Reg |
| 5" | .500" | 25' | 695 | 1 3/4" | 3" | 12 1/2" | 3 1/4" | 2 3/8" | 4" | 3 1/2 Reg |
| 5" | .500" | 30' | 775 | 1 3/4" | 3" | 12 1/2" | 3 1/4" | 2 3/8" | 4" | 3 1/2 Reg |
| 5" | .750" | 30' | 1100 | 1 3/4" | 3" | 12 1/2" | 3 1/4" | 2 3/8" | 4" | 3 1/2 Reg |
| 5" | .750" | 25' | 930 | 1 1/2" | 3" | 12 1/2" | 3 1/4" | 2 3/8" | 4 5/8" | 3 1/2 Beco |
| 5 1/2" | .750" | 25' | 1045 | 1 1/2" | 3" | 12 1/2" | 3 1/4" | 2 3/8" | 4 5/8" | 3 1/2 Beco |
| 5 1/2" | .750" | 30' | 1240 | 1 1/2" | 3" | 12 1/2" | 3 1/4" | 2 3/8" | 4 5/8" | 3 1/2 Beco |
Drill pipe usage notes
1. New drill pipe should be pasted oil before connection
2. Make up and break at least 3 times before drilling
3. Hard bending and plastic coating can be processed according to clients’ special requirements
FAQ
Q: What is your delivery time?
A: It usually takes 20 days to produce. Within 3 days (if there is stock).
Q: How to control the quality?
A: Before shipping, we should check and test each drill rod.
Q: Do you agree to order samples?
A: Yes, we welcome your sample order to test our quality.
Q: Has your drill pipe been heat treated?
A: Yes, our heat treatment of drill pipe and casing.
Q: Does your drill pipe have anti-rust function?
A: Yes, each drill pipe and casing will be anti-rust with paint or anti-corrosion oil before transportation. If you need galvanized pipe, please contact us.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.