Drill Pipe
Your Professional Drill PipeManufacturer!
Quzhou Zhongdu Machinery Technology Co.,Ltd is industry and trade company which modern enterprise integrating scientific research, development, manufacture and trading. Based on integrity, responsibility and cooperation. Our company have professional R&D and sales team, providing one-stop service for customers. Our company mainly products is screw Air Compressor, Piston Air Compressor, Drill Machine, Drill Rig Parts, Jack Hammer, Boring Machine, Tunnel Shotcreting Machine and Other Machinery Hardware Product etc.
Why Choose Us
OEM Services Provided
Over the years, the company has cooperated with large and medium-sized enterprises in the industrial base to customize relevant products for customers according to customer needs and actual use.
High Quality
Our products are manufactured to very high standards, using the finest materials and manufacturing processes. After years of cooperative research and development with various manufacturers, the functions of various types of products are continuously optimized and the quality is more reliable.
Production Market
Our products are sold well at home and abroad and are well received by customers. Its main markets include Southeast Asia, Central Asia, West Asia, Africa, the Middle East and South America.
Product Application
Our products are Mining, construction, water well drilling, refineries, chemical industry, tunnel, highway, field.
Types of Drill Pipe
Regular drill pipe
A regular drill pipe, or standard drill pipe, comes in various sizes and outer diameters. The most common outside diameter for regular drill pipes ranges from approximately 2 3/8 inches to 6 5/8 inches.
Heavy weight drill pipe
A heavy weight drill pipe (HWDP) is characterized by its thicker walls and significantly higher weight per foot (lb/ft) compared to regular drill pipes. These attributes make a heavy weight drill pipe exceptionally well-suited for demanding drilling applications.
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ZD-89 DTH 89mm Drilling Rig Rod PipeThe plunge drill pipe is the key passage for deep-hole rock drilling operations, connecting the drilling rig with the drill bit and responsible for transmitting huge impact energy, torque andAdd to Inquiry -
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Specification
|
Outer diameter |
Thread |
Wall thickness |
Length |
Wrench flat |
Weight |
|
Mm |
Mm |
Mm |
Mm |
Approx Kg |
|
|
76-140mm (option) |
2-3/8 API REG (option) |
5.5 (option) |
1000 |
57 (option) |
17 |
|
1500 |
22 |
||||
|
2000 |
26 |
||||
|
3000 |
35 |
||||
|
1000 |
65 (option) |
17 |
|||
|
1500 |
22 |
||||
|
2000 |
26 |
||||
|
3000 |
35 |
||||
|
6.5 (option) |
3000 |
46 |
|||
|
4500 |
56 |
||||
|
6000 |
73 |
|
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 |
Components Of a Drill Pipe
Pipe Body: The primary section of the drill pipe is the pipe body, which is a long, cylindrical tube made of high-strength steel. This steel is designed to withstand the extreme pressures, stresses, and abrasion encountered during drilling operations. The pipe body is typically seamless and heat-treated for added strength.
Tool Joints: Tool joints are the threaded connections located at the ends of the drill pipe. They are designed to provide a secure connection between adjacent pipes and allow for the transmission of torque and axial loads.
Upset Ends: The upset ends are the thicker portions of the pipe near the tool joints. They provide additional strength and wear resistance to the connections and are used to make the transition from the thicker tool joints to the thinner pipe body.
Threads: Threads on the tool joints are used to connect one drill pipe to another and to other drilling components, such as the drill collars and the bottom hole assembly.
Hardbanding: Drill pipes often have hardbanding applied to the tool joint shoulders and box ends. Hardbanding is a wear- resistant overlay that helps protect the tool joints from abrasion and extend their lifespan.
Internal Diameter (ID): The internal diameter of the drill pipe allows for the passage of drilling fluids and the rotation of the drill bit. It is essential for the circulation of drilling fluids, which help cool the bit, remove cuttings, and provide pressure control.
External Coating: Drill pipes may have external coatings to provide additional protection against corrosion and wear. Common coatings include phosphate, copper, or epoxy coatings.
Identification Marks: Drill pipes are typically marked with identification information, including the manufacturer' s name, pipe size, wall thickness, and grade to ensure proper handling and usage.
Length: Drill pipes come in various standard lengths, typically ranging from 30 to 32 feet (9 to 10 meters). Longer drill pipes can be used in some specialized drilling applications.
API Specifications: Drill pipes are manufactured according to specific API (American Petroleum Institute) specifications, such as API 5DP, which sets standards for drill pipe manufacturing and performance.
Manufacturing Process for Drill Pipes
The manufacturing process for drill pipes involves several stages to ensure the quality, strength, and reliability of the final product. The process typically includes the following steps:
Steel Selection: High-quality steel alloys are chosen based on the desired grade and mechanical properties for the drill pipes.
Pipe Production: The selected steel is formed into cylindrical pipes through a hot-rolling process, which involves heating the steel to a high temperature and passing it through rolling mills to achieve the desired diameter and wall thickness.
Heat Treatment: The pipes undergo a heat treatment process to enhance their mechanical properties. This typically includes quenching and tempering to improve hardness, strength, and toughness.
Upsetting: Upsetting is the process of thickening the ends of the pipe to create tool joints. These tool joints provide a robust connection point for attaching multiple drill pipes together. The ends are often threaded during this process.
Thread Machining: The tool joint threads are machined to precision standards to ensure secure and leak-free connections between drill pipes.
Hardbanding
Hardbanding: In some cases, hardbanding is applied to the tool joint shoulders and box ends to increase resistance to wear and abrasion during drilling.
Quality Control
Rigorous quality control measures are taken throughout the manufacturing process to inspect the dimensions, mechanical properties, and integrity of the drill pipes.
Marking and Identification
Drill pipes are marked with identification information, including the manufacturer' s name, size, grade, and other relevant details.
API Certification
Manufacturers that meet API standards must pass a certification process and may apply the APl monogram to their products as a mark of compliance.
Transport
FAQ
Quzhou Zhongdu Machinery Technology Co., Ltd. is one of the most professional drill pipe manufacturers and suppliers in China. We warmly welcome you to wholesale customized drill pipe made in China here from our factory.
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