Product Information
| Item | Details |
|---|---|
| Model NO. | 508141200 |
| Type | Steel |
| Application | Kelly Bar |
| Certification | CE, ISO9001: 2000 |
| Condition | New |
| Ingredient | Steel |
| Colour | Customized |
| Weight | 800kg |
| Production Cycle | 3-7 Working Days |
| Parameter Size | Customization Available Upon Request |
| Product Feature | High Strength, High Wear Resistance, Anti-Fatigue |
| Technical Services | Provide Online and Offline Technical Guidance |
| Product Service | Free Spare Parts Are Provided During The Warranty |
| Transport Package | Plastic Film |
| Specification | 508141200 |
| Trademark | JM |
| Origin | China |
| Production Capacity | 200 |
| Packaging & Delivery | Package Size: 55.00cm * 55.00cm * 125.00cm |
| Package Gross Weight: 810.000kg |

Terminal Joint
This product is a Kelly bar terminal, also known as the “flower pipe” in our factory’s product lineup. Equipped with a military-grade wear-resistant filtration structure, it acts like an “intelligent filter screen” specially installed for the mud passage of your drilling system.Its core function lies in proactively intercepting harmful blockages (such as large rock fragments or debris) that could cause fatal damage to downstream equipment. By doing so, it effectively protects critical components like drill bits, mud pumps, and Measurement While Drilling (MWD) devices, significantly reducing non-production-related drilling halts caused by equipment clogging or damage.Beyond its protective performance, this Kelly bar terminal also boasts practical design advantages: its ultra-long service life minimizes the frequency of part replacements, while the quick-disassembly structure simplifies maintenance operations—both features work together to compress maintenance costs to the lowest possible level.Choosing our Kelly Bar Terminal 508141200 means you’re opting for three key benefits: smoother and uninterrupted drilling processes, lower equipment failure rates, and higher overall investment returns. It ensures that every meter of drilling footage you complete creates the greatest possible value for your project.
| Product name | Product model | Product color | Production cycle |
|---|---|---|---|
| Kelly bar terminal | 219121200 | Customized | 4 Days |
| Kelly bar terminal | 245121200 | Customized | 4 Days |
| Kelly bar terminal | 245141200 | Customized | 4 Days |
| Kelly bar terminal | 255121200 | Customized | 4 Days |
| Kelly bar terminal | 277121200 | Customized | 4 Days |
| Kelly bar terminal | 325101200 | Customized | 4 Days |
| Kelly bar terminal | 325121200 | Customized | 4 Days |
| Kelly bar terminal | 325161200 | Customized | 4 Days |
| Kelly bar terminal | 340101200 | Customized | 4 Days |
| Kelly bar terminal | 351121200 | Customized | 4 Days |
| Kelly bar terminal | 355101200 | Customized | 4 Days |
| Kelly bar terminal | 355121200 | Customized | 4 Days |
| Kelly bar terminal | 356101200 | Customized | 4 Days |
| Kelly bar terminal | 377101200 | Customized | 4 Days |
| Kelly bar terminal | 394121200 | Customized | 4 Days |
| Kelly bar terminal | 406101200 | Customized | 4 Days |
| Kelly bar terminal | 406121200 | Customized | 4 Days |
| Kelly bar terminal | 406141200 | Customized | 4 Days |
| Kelly bar terminal | 426141200 | Customized | 4 Days |
| Kelly bar terminal | 440101200 | Customized | 4 Days |
| Kelly bar terminal | 440141200 | Customized | 4 Days |
| Kelly bar terminal | 450121200 | Customized | 4 Days |
| Kelly bar terminal | 490141200 | Customized | 4 Days |
| Kelly bar terminal | 508141200 | Customized | 4 Days |
| Kelly bar terminal | 530141500 | Customized | 4 Days |
| Kelly bar terminal | 630141300 | Customized | 4 Days |
JM Rotary Drilling Rig
JM Kelly Bar

All the drill pipes are made of high-strength alloy quality pipes to ensure the dimensional accuracy of the drill pipes, as well as excellent mechanical properties and welding adaptability. Special heat treatment for secondary strengthening is carried out on special steel pipes (such as core pipe steel, etc.), significantly improving the torsional bearing capacity of the drill pipe. All the key strips of JM drill pipes are made of high-strength, fully high-quality alloy structural steel, and undergo comprehensive strengthening treatment. The inner key adopts an integral arc-shaped plate structure, significantly improving the wear resistance and lifespan of the inner and outer key strips, thereby reducing the failure rate and maintenance of the drill pipe. We also make reasonable pipe system configurations to maximize the thickness of the drill pipe key strips and the wall thickness of the steel pipe, enhancing the torque transmission and pressure drilling capabilities of the drill pipe, and reducing the occurrence of problems such as stuck rods, bent rods, and rolled keys.
JM drill pipes are the preferred choice for improving drilling efficiency and achieving maximum benefits!
Spare Parts


The company relies on one country’s “one belt, one road” development strategy, and its products are exported to Southeast Asian countries, African countries, Middle East Arabia countries and Russia. Won the trust of customers at home and abroad.
We adhere to the business philosophy of “integrity creates brand and quality casts brilliance”, pay attention to the international and domestic market and pursue excellence. We sincerely look forward to cooperating with you and warmly welcome your presence to create a better future.
Jiuman Machinery possesses complete sets of production equipment and process facilities, a clean production environment, and an excellent management system. To ensure the professional quality of the products, the company implements lean production based on its production management regulations. From the procurement of raw materials to the final delivery of finished products, strict control is exercised over the entire process, and each aspect of product manufacturing is meticulously monitored to guarantee excellent product quality.
Through technological innovation and lean management, Jiuman has successfully addressed the industry-wide challenges of high energy consumption and low output, providing customers with efficient and reliable solutions. This case exemplifies the immense potential of digital transformation in traditional manufacturing and offers valuable experience for industry upgrading.

Over the years, the company has collaborated with numerous domestic and international machinery manufacturers, including Bao E, Xugong Group, Zoomlion, Sanhe Intelligent, and CMV, contributing significantly to infrastructure projects both in China and around the world.


The R&D technology of Kelly Bars, Rotary Drilling Rigs and Excavators has passed international certifications , strictly following industry technical specifications, ensuring that the equipment meets international standards in terms of safety performance, environmental indicators and operation efficiency, and satisfying the technical requirements of customers in different regions around the world.

Fully automatic laser cutting machine

Intelligent welding machine operator

Kelly bar welding special machine
The Kelly bar welding special machine can efficiently complete two-way Kelly bar welding, significantly improving welding quality and product durability, reducing the need for manual intervention, and accelerating the production speed of products. It also has the same production efficiency for customer customization, meeting the needs of various tasks.











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