R780 Steel 2 7/8" API Mining Water Well Rock Drilling Rod
| Parts Name |
H22 tapered tools |
| Use |
Ore Mining |
| Tapered Type |
7 degree 11 degree 12degree |
| Type |
drilliing tools |
| Weight |
2.2-25kg |
| Length |
610 - 8000mm |
Product Description
R780 Steel 2 7/8" API Mining Water Well Rock Drilling Rod is available in various lengths including 3 Meter, 1.5m, and 2m options.
Water Well Drill Rod Production Process
Our drill rods are manufactured using premium materials from leading Chinese steel enterprises including Baosteel, Angang Steel, Xining Special Steel, and Henggang. The production process features:
- Heat treatment using integrated non-oxidizing furnace
- Professional CNC machining for all thread processing
- International standard thread gauges for quality assurance
- Internally thickened rod body and tube ends
- Tempering treatment after friction welding for enhanced durability
The friction welding process ensures high strength, excellent elasticity, and reliable connections that resist bending while maintaining quality.
Product Parameters
| Serial Number |
Drill Pipe Diameter (mm) |
Drill Pipe Diameter (mm) |
Drill Pipe Length |
Wall Thickness (mm) |
Thread |
| 1 |
3 1/2 |
89 |
1000-9144 |
6 |
API 2 3/8" IF |
| 2 |
4 |
102 |
1000-9144 |
8.38 |
API 2 7/8" IF |
| 3 |
4 1/2 |
114 |
1500-9144 |
8.38 |
API 3 1/2" REG/IF |
| 4 |
5 |
127 |
1500-9144 |
9.19 |
API 3 1/2" REG/IF |
| 5 |
5 1/2 |
140 |
1500-9144 |
10.00-25.4 |
API 4 1/2" REG/IF or 4"FH |
| 6 |
6 1/4 |
168 |
3000-9144 |
10.00-25.4 |
API 4 1/2" REG/IF or 4"IF |
| 7 |
7 |
178 |
3000-9144 |
12.7-25.4 |
5 1/2"FH/REG |
| 8 |
7 5/8 |
194 |
3000-9144 |
12.7-25.4 |
6 5/8"REG |
Structural Composition
The water well drill pipe consists of three main components:
- Barrel
- Male joint
- Female joint
These components feature axial holes and are connected through interference fit from both ends of the rod cylinder. The design includes shaft shoulders on the male and female joints, with the rod cylinder end face welded to the shaft shoulder end face. This innovative connection method provides high torsional strength, making it ideal for shallow well drilling rig applications.
Usage Precautions
Important considerations for optimal performance:
- Select the appropriate type and model for your specific construction requirements
- Source from reputable, large-scale manufacturers to ensure quality
- Conduct thorough formation checks to prevent water blockage
- Ensure proper water delivery and accurate design before operation
- Be aware that twisting during use may indicate suboptimal materials
Product Images
Jinzhou Shitan Machinery Equipment Co., Ltd. Main Products：
Pneumatic Drilling Rig / Air Drilling Rig（ST-180,ST-200,ST-260,ST-300,ST-350,ST-400,ST450,ST-450,ST-500, ST-600,ST-800 and other Pneumatic water well drilling Rigs.）, Crawler Water Well Drilling Rig / Trailer Mounted Drilling Rig / Water Well Drilling Rig / Hydraulic Borewell Machine / Hard Rock Drilling Equipment / Diamond Core Drill Rig / Geological Drilling Rig / Soil Testing Drilling Rig / Portable Water Well Drilling Rig（ST-30，ST-50，XY-1A, XY-1B, XY-2, XY-2B,GK180, GK200, GY150, GY200 and 30 impact drill rig,ZLJ series tunnel drilling rig and other geological drilling machines）Crawler Track Undercarriage, Drilling Mud Pump（BW150,BW160,BW200,BW250,BW850 series Drilling mud pumps）, Drilling Air Compressor, Water Well Drill Bits（PDC Drill Bit， Tricone Bit， DTH Button Bit）, Water Well Drill Pipe, Drilling Rig Spare Parts( drilling rods , drilling rods joint , casing pipe, casing coupling, core tube, core tube coupling, lifters, automatic drop hammer, sampler, SPT tool, wrench fork, pad fork, lock joint), Track Transporter
Good quality, professional after-sales service, welcome to order
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