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Rotary Kelly Rotary Kelly

1000.0~1500.0 USD
Min. Order: 10 Piece/Pieces
Payment Terms: L/C, T/T
Supply Ability: 100
Place of Origin: Shanghai

Company Profile

Location: Shanghai, China (Mainland)
Business Type: Manufacturer, Trading Company
Main Products: Drill Pipe, Drill Collar, Kelly, Drill Jar

Product Detail

Model No.: Z03/Z04
Means of Transport: Ocean, Air, Land
Rotary Kelly: Rotary Kelly
Production Capacity: 100
Packing: Metal Frame
Delivery Date: 25 Days
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Product Description

Kelly is the drive part of whole drill string, it transmit the torsional energy from the rotary table to the bit in the bottom of the hole. TIANHE precision-machined Kelly is a heavy square or hexagonal steel bar supported by the swivel through the rotary table and connected to the first joint of drill pipe in the drill string.

TIANHE Kelly has been approved by the NS-1 certification. Straightness is the key manufacturing process. Straightness is checked before, during and after each machining operation. Flats are precision-milled to API and NS-1 specifications. All milling is performed on specially designed rigid Kelly mills. 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 285-341 and a minimum average Charpy impact value of 40 ft-lbs;

Ends and drive sections, IDs and connections machined and inspected to API and NS-1 specifications;

 Kelly bars ultrasonically inspected over full length and section; 

 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.

Specifications - Rotary Kelly

Nom
Size
(in)

 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

6 5/8REG    7 3/4

4 1/2REG    5 3/4

NC26     85.7


1 1/4


3 2/7


3

6 5/8REG    7 3/4

4 1/2REG    5 3/4

NC31     4 1/8

NC26    3 3/8

1 3/4

1 1/4

4

3 3/8

3 1/2

6 5/8REG    7 3/4

4 1/2REG    5 3/4

NC38     4 3/4

NC31    4 1/8

2 1/4

1 3/4

4 1/2

4

4 1/4

6 5/8REG    7 3/4

4 1/2REG    5 3/4

NC46     6 1/4

NC38    4 3/4

2 4/5

2 1/4

5 4/7

4 4/5

6 5/8REG    7 3/4

4 1/2REG    5 3/4

NC50     6 3/8

NC38    4 3/4

2 4/5

2 1/4

5 4/7

4 4/5

5 1/4

6 5/8REG    7 3/4


5 1/2FH      7

NC46    6 1/4

3 1/4

3

7

6

6 5/8REG    7 3/4


NC56       7

NC50    6 3/8

3 1/4

3 1/4

7

6

6

6 5/8REG    7 3/4



5 1/2FH     7


3 1/2


6 4/5

6 5/8REG    7 3/4



NC56      7


3 1/2


6 4/5


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