Oil Drilling Tool Rotary Square/Hexagonal Drill Kelly Pipe Drill Kelly

• Customization: Available
• After-sales Service: Support
• Warranty: Support
• Model NO.: kelly pipe
• Surface Treatment: Spray-Paint
• Operation Pressure: Atmospheric Pressure
• Material: Alloy
• Color of Kelly: Blue
• Connection of Kelly: Nc
• Payment of Kelly: L/C T/T
• Size of Kelly: Customized
• Transport Package: Wooden Box
• Specification: NC26
• Trademark: Tianhe
• Origin: China
• HS Code: 8431431000
• Production Capacity: 50000PC/Year

Product Description

Product Description

Kelly
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. TIANHE 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 TIANHE 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.

 

Product Parameters

Specification-Cup Tester

Nom Size (in)

Square kelly Product Code

Hexagonal Kelly Product Code

Top Connection(LH)

Bottom Connection

I.D.(in)

Drive Section(in)

Standard O.D.(in)

Optional O.D.(in)

Square O.D.(in)

Hex. O.D.(in)

Square

Hex.

A

B

2 1/2

Z03-130000

6 5/8 REG LH

7 3/4

4 1/2 REG LH

5 3/4

NC26 85.7

1 1/4

3 1/4

3

Z03-130100

Z04-130000

6 5/8 REG LH

7 3/4

4 1/2 REG LH

5 3/4

NC31 4 1/8

NC26 3 3/8

1 3/4

1 1/4

3 3/8

3 3/8

3 1/2

Z03-130200

Z04-130100

6 5/8 REG LH

7 3/4

4 1/2 REG LH

5 3/4

NC38 4 3/4

NC31 4 1/8

2 1/4

1 3/4

4 7/16

4

4 1/4

Z03-130300

Z04-130200

6 5/8 REG LH

7 3/4

4 1/2 REG LH

5 3/4

NC46 6 1/4

NC38 4 3/4

2 13/16

2 1/4

5 1/2

4 4/5

Z03-130400

Z04-130300

6 5/8 REG LH

7 3/4

4 1/2 REG LH

5 3/4

NC50 6 3/8

NC38 4 3/4

2 13/16

2 1/4

5 1/2

4 4/5

5 1/4

Z03-130500

Z04-130400

6 5/8 REG LH

7 3/4

5 1/2 FH 7

NC46 6 1/4

3 1/4

3

6 3/4

5 29/32

Z03-130600

Z04-130500

6 5/8 REG LH

7 3/4

NC56 7

NC50 6 3/8

3 1/4

3 1/4

6 3/4

5 29/32

6

Z04-130600

6 5/8 REG LH

7 3/4

5 1/2 FH 7

3 1/2

6 13/16

Z04-130700

6 5/8 REG LH

7 3/4

NC56 7

3 1/2

6 13/16

 

Detailed Photos

Rotary Kelly

Certifications

Packaging & Shipping

Company Profile

 Established in 1973 as a state-owned Mudanjiang Petroleum Machinery Factory. After 50 years a new private company(Tianhe) was registered and established in 2006.   At present, Tianhe Group has 5 sales companies, including Chengdu, Beijing, Shanghai, Yanan, Mudanjiang branches. 2 large factories, in cluding Mudanjiang and Shanghai factory, controlling the important sales territories in China. The company is also actively expanding its business overseas. Currently, more than 50 countries and regions around the world, as well as over 200 well-known oil companies and service company customers, are using products under the Tianhe brand. Tianhe has become one of the most popular Asian oil brands.

Our Advantages

1.The company has over 50 years of professional production experience and is capable of independently manufacturing a complete range of downhole tools, including: drill pipes, drill collars, stabilizers, jars, fishing tools, etc.

2. We have a strict quality control system, conducting strict quality checks from raw materials to finished products.

3.The company has obtained ISO9001 quality system certification and holds API certificates such as 5CT, 5DP, 7-1, Q1, etc.

4.The minimum order quantity is 1, and the delivery cycle can be strictly controlled.

5.Our export products have been recognized by customers in more than 50 countries and regions.

FAQ

1.Q:Are you a factory or trading company?
We are a factory and the Top 3 of oildrilling equipment manufacturer.

2.Q:Where is your factory located? 
We locate in Heilongjiang Province, China.

3. Q:What do your factory do regarding quality control?
From material to products, we inspect each process to keep good quality.
And SGS inspection can be accepted.

4.Q:How about MOQ ?
We have stock of common sizes at hand, so even few ton is accepted.

5.Q:How about payment ?
Both T/T and L/C can be accepted.

6.Q: How long does your warranty?
We can assured the quality within 90 days after receiving the cargoes.