Feature highlights:API-certified drill pipes designed for oil well drilling, featuring high abrasion resistance, low friction, and excellent corrosion resistance. With a hard-banding wear rate less than 6% of bare tool joints, these products ensure prolonged service life and reduced drilling torque. The API certification ensures compliance with industry standards, providing market access and quality assurance trusted by global drilling companies.
| Specification Category | Details |
|---|---|
| Product Name | API 5DP 2 7/8" Drill Pipe, 3 1/2" Oil Drill Pipes |
| Brand Name | Suneco |
| Application | For Drilling |
| Features | Oil Drilling |
| Advantage | High Performance |
| Condition | New |
| Applicable Industries | Energy & Mining |
| Production Capacity | 1000 pieces |
|---|---|
| Place of Origin | Shandong, China |
| Technique | Hot Rolled |
| Certification | API |
| Core Components | Other |
| Power (W) | Customized |
| Warranty | 1 Year |
|---|---|
| Warranty of Core Components | 1 Year |
| Weight (KG) | 1000 |
| Dimension (L*W*H) | 96.5*10*10 cm |
| Length | R1 R2 R3 |
| Color | Required |
| Video Outgoing-inspection | Provided |
|---|---|
| Machinery Test Report | Provided |
| Packaging and Delivery | |
|---|---|
| Selling Units | Single item |

| Drill pipe specifications | |||||||||
| Designations | Pipe body OD. | Pipe wall thickness | Tool joint OD. | Tool joint PIN ID. | Approx mass | ||||
| Lable 1 | Lable 2 | Grade | Upset type | RSC type | mm | mm | mm | mm | kg/m |
| Internal-upset | |||||||||
| 4 | 14.00 | E | IU | NC40 | 101.60 | 8.38 | 133.4 | 71.4 | 22.42 |
| 4 | 14.00 | G | IU | NC40 | 101.60 | 8.38 | 139.7 | 61.9 | 22.76 |
| 4-1/2 | 13.75 | E | IU | NC40 | 114.3 | 6.88 | 152.4 | 85.7 | 22.5 |
| 3-1/2 | 15.5 | G | EU | NC38 | 88.9 | 11.4 | 120.7 | 54.0 | 25.38 |
| 2-3/8 | 6.65 | E | EU | NC26 | 60.32 | 7.11 | 85.7 | 44.5 | 10.45 |
| 2-7/8 | 10.40 | S | EU | NC31 | 73.02 | 9.19 | 111.1 | 41.3 | 17.19 |
| Drill collar specifications | |||||||
| Nominal Size | OD | ID | Length | Bevel Dia. mm | Bending Strength Ratio | ||
| mm | in | mm | in | mm | |||
| NC31-41(2-7/8IF) | 104.8 | 4-1/8 | 50.8 | 2 | 9150 | 100.4 | 2.43:1 |
| NC35-47 | 120.7 | 4-3/4 | 50.8 | 2 | 9150 | 114.7 | 2.58:1 |
| NC38-50(3-1/2IF) | 127 | 5 | 57.2 | 2-1/4 | 9150 | 121 | 2.38:1 |
| NC44-60 | 152.4 | 6 | 71.4 | 2-13/16 | 9150/9450 | 144.5 | 2.84:1 |
| NC44-62 | 158.8 | 6-1/4 | 57.2 | 2-1/4 | 9150/9450 | 149.2 | 2.91:1 |
| NC46-62(4IF) | 158.8 | 158.8 | 71.4 | 2-13/16 | 9150/9450 | 150 | 2.63:1 |
| NC50-70(4-1/2IF) | 177.8 | 7 | 57.2 | 2-1/4 | 9150/9450 | 164.7 | 2.54:1 |
| NC56-77 | 196.8 | 7-3/4 | 71.4 | 2-13/16 | 9150/9450 | 185.3 | 2.70:1 |
| 6-5/8REG | 209.6 | 8-1/4 | 71.4 | 2-13/16 | 9150/9450 | 195.7 | 2.93:1 |
| NC61-90 | 228.6 | 9 | 71.4 | 2-13/16 | 9150/9450 | 212.7 | 3.17:1 |
| We can supply full size drill collar with API 5D/5DP, Please leave a message for consultation. | |||||||




The G105 grade API-5DP and API-7-1 Drill Pipe is a high-strength, seamless tubular component essential for the modern drilling industry. Manufactured in accordance with stringent API specifications, it ensures reliable performance in demanding environments. Its primary function is to transmit hydraulic power and rotational torque from the surface rig to the drill bit deep underground. The pipe’s robust construction, typically from high-grade carbon or low-alloy steel, provides excellent resistance to tension, torsion, and internal pressure. It features standardized tool joints for a secure connection, enabling the efficient and safe drilling of oil, gas, and geothermal wells over long vertical and horizontal distances.