Premium OEM Kelly Pipe API Designed for Heavy-Duty Applications

• Customization: Available
• After-sales Service: Lifetime Support
• Warranty: 12months
• Model NO.: Kelly Pipe
• Manufacturing Process: CNC Milling
• Surface Treatment: Spray-Paint
• Operation Pressure: Atmospheric Pressure
• Material: Alloy
• Colour: Blue
• Transport Package: Wooden
• Specification: 55-87
• Trademark: KAIDI
• Origin: China
• HS Code: 8401100000
• Production Capacity: 50000 Pieces/Year

Product Description

KAIDI Petroleum Equipment Co., Ltd.

Core Business: Specialist in oilfield drilling & intervention tools

Product Portfolio
✓ Drilling Tools (DC/HWDP etc.)
✓ Fishing Tools (Overshot/Spear etc.)
✓ Jarring Tools (Hydraulic/Mechanical Jars)
✓ Milling Tools (Junk Mill/Reamer etc.)
✓ Mud Motors
✓ Testing Equipment (Jar Tester etc.)


Certifications: API 7-1/5DP/5CT, NS-1, ISO9000

Global Presence
Exported to 50+ countries with strong reputation in North America, Middle East, Russia etc.

Partnership Opportunity:
Seeking qualified distributors worldwide for mutual growth!

Contact for Technical Support:
LAURA Manager
 

Square Kelly

Product application

Kelly is located in the top of the drill string, with square and hexagonal. In rotary drilling, when it is drilling, kelly connected with square bushing and rotary bushing, transfer the ground rotary torque to drill pipe and to drive the drill bit,bearing the weight of the drill string.In the drilling of the turbine and screw, the weight of the drill string and the counter torque are supported.

Kelly is main driver of the whole drill string. It transmits torsional energy from the rotary table through the drill string to the bit at the bottom of the hole. KAIDI Kelly is a long square or hexagonal, precision machined heavy steel bar that is supported by the swivel through the rotary table and is connected to the first joint of drill pipe in the drill string.

Straightness of the kelly is very crucial in the manufacturing process, thus straightness inspections are carried out before, during and after each machining operation. The flats are precision-milled to API specifications. All milling processes are performed on specially designed rigid Kelly mills to ensure tight tolerances and high quality drive sections. Each KAIDI Kelly is furnished with a pressed steel thread protectors.

Features and Benefits
 Manufactured from AISI 4145H-modified, fully heat-treated alloy steel with a Brinell hardness range of 285-341BHn and a minimum average Charpy impact value of 40 ft-lbs;
 Ends and drive sections, IDs and connections machined and inspected to API
specifications;
Ultrasonic inspection is performed on all sections;
Shipped in a protective steel-cased scabbard;

When ordering please specify:
Kelly type (square or hexagonal);
nominal size and overall length;
Upper and lower connections.

Top upset with left- handed connection

Bottom upset
with right- handed connection

 FAQ for Oilfield Machinery Products

Q1:Do your products comply with API/ISO international standards?
Answer: Yes, our products fully comply with API Spec 7-1, API 6A, and are certified with ISO 9001.
Q2:How do we ensure quality?
Answer:Production samples are always made before mass production.
A final inspection is always conducted before shipment.
Q3:: Are you the manufacturer? What petroleum machinery products do you mainly offer?
Answer: Yes, we are a professional manufacturer integrating R&D, production and export with our own production base. Our main products include:
Fishing Tools (e.g., overshots, fishing spears, milling shoes
Drilling Tools (e.g., drill pipes, stabilizers, reamers)
Valves (e.g., gate valves, check valves, safety valves)
Other downhole equipment, etc.
   
Q4:What is the warranty period? How to claim it?
Answer: 12-month warranty. Provide the serial number and fault description for a response within 48 hours.
Q5:Do you provide technical training or on-site support?
Answer: Free remote training is available. On-site support costs are negotiable.
Q6: What is the lead time for delivery?
Answer: 30 days for standard products; 60-90 days for customized orders (subject to complexity).
Q7: What shipping methods do you offer? How to track orders?
Answer: Sea express shipping available. Tracking number and link provided after shipment.
Q8: How do you package the products to prevent rust during sea shipping?**  
Answer:Packaging includes anti-rust oil, vacuum sealing, wooden crates, and desiccants.*  
Q9:Do you accept customized orders?
Answer: OEM is accepted. Submit detailed drawings or specifications for a quote.
Q10:How to get your latest product catalog?For any further detailed inquiries, please feel free to contact us.