The Oil Drill Pipe with API 5dp Specification is a high-quality, durable drill pipe designed for drilling rigs in the oil and gas industry. Manufactured by GPE Oil Machinery Co., Ltd, this drill pipe is made from AISI 4142H-4145H modified drill collar material according to SY/T 5146-1997. It is specifically developed to provide a gradual transition from heavy drill collars to lighter weight drill pipe.
| Parameter | Specification |
|---|---|
| Model NO. | API 5DP |
| Product Name | API 5dp 4" Nc40 Heavy Weight Drill Pipe (Hwdp) |
| Model Type | Heavy Weight Drill Pipe |
| Condition | New Product 2023 |
| Certification | API |
| Standard | API 5dp |
| Grade | E75, X95, G105, S135 |
| Usage | Gas Deep Hole Drilling, Well Drilling |
| Applicable Industries | Energy & Mining |
| Applicable Medium | Mud, Water, Natural Gas, Crude Oil |
| Material | Alloy Steel |
| Manufacturing Process | Forging |
| Processing Type | Rolling |
| Machine Type | Drilling Tool |
| Thread Type | Nc38, Nc40, Nc46, Nc50, 5 1/2FH, 6 5/8FH |
| Size | 3.5", 4", 4.5", 5", 5 1/2", 6 5/8" |
| Weight | 500 Kg |
| Advantage | High Performance |
| After-Sales Service | 24/7 |
| Surface Treatment | Spray-Paint |
| Transport Package | 6/9/12 Pieces in a Bundle Packed with Steel Holder |
| Package Size | 2000.00cm * 1550.00cm * 1200.00cm |
| Package Gross Weight | 3000.000 kg |
| Production Capacity | 10000 Pieces Per Month |
| Trademark | River petro |
| Origin | Shandong, China |
| HS Code | 7304231000 |


The Oil Drill Pipe with API 5dp Specification is a high-quality, durable drill pipe designed for drilling rigs in the oil and gas industry. Manufactured by GPE Oil Machinery Co., Ltd, this drill pipe is made from AISI 4142H-4145H modified drill collar material according to SY/T 5146-1997. It is specifically developed to provide a gradual transition from heavy drill collars to lighter weight drill pipe.
This integral heavy weight drill pipe has a thick-walled construction, which helps prevent stress concentration at the top of the drill collars. It allows for drilling at higher rpms, reducing torque and differential pressure sticking. This makes it ideal for directional drilling, as it simplifies directional control and minimizes connection fatigue problems commonly encountered in high angle or horizontal drilling.
In addition to its benefits in directional drilling, the Oil Drill Pipe with API 5dp Specification also offers advantages in straight-hole applications. Its reduced number of pipe failures and increased drill stem service make it a reliable choice for various drilling operations.
Key Features:
| 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 |
| We can supply full size drill pipe with API 5D/5DP, including IU, EU, IEU. Please leave a message for consultation. | |||||||||
| 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. | |||||||
| Heavy weight drill pipe specifications | ||||||
| Nominal size | Pipe body | Tool Joint | Single weight Bec | |||
| OD. | ID. | RSC type | OD. | ID. | kg/pcs | |
| 3-1/2 | 3-1/2 | 2-1/4 | NC38 | 4-3/4 4-7/8 | 2-1/4 | 319 |
| 4 | 4 | 2-1/2 2-1/16 | NC40 | 5-1/4 | 2-1/2 2-9/16 | 434 423 |
| 4-1/2 | 4-1/2 | 2-3/4 | NC46 | 6-1/4 | 2-3/4 | 578 |
| 5 | 5 | 3 | NC50 | 6-5/8 | 3 | 702 |
| 5-1/2 | 5-1/2 | 3-1/4 | 5-1/2FH | 7 | 3-1/4 | 842 |
| 6-5/8 | 5-1/2 | 4-1/2 | 6-5/8FH | 8-1/4 | 4-1/2 | 1084 |
| We can supply full size drill pipe with API 5D/5DP, Please leave a message for consultation. | ||||||





NC40 Heavy Weight Drill Pipe (HWDP) serves a critical role in the drill string, acting as a transitional element between the standard drill pipes and the heavier bottom-hole assembly. Its thicker walls and specialized construction provide extra weight and stiffness, which improves drilling efficiency and weight transfer to the bit. Furthermore, it helps reduce stress concentrations and fatigue failures at the connection points. The NC40 connection, with its robust thread design, ensures reliable performance in demanding directional drilling applications, enhancing the overall stability and longevity of the entire drilling assembly.