$1,000.00 - $6,000.00
Min. Order : 1 Piece

API SPEC. 7-1Oil Field Square Kelly, Hexagonal Hex Kelly, Oil Drilling Kelly Pipe

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Quick Details

Port: Tianjin Port
Payment Terms: L/C,T/T,Western Union,MoneyGram
Supply Ability: 2000 Piece/Pieces per Month
Brand Name: APS
Size for hex kelly: 3''~6''
Size for square kelly: 2 1/2''~5 1/4''
Type: Drill Pipe
Processing Type: Forging
Place of Origin: China
Machine Type: Drilling Equipment
Use: Well Drilling
Material: Alloy steel
Model Number: F/FB/PZ/3NB/QZ
Certification: API
Delivery Detail: Shipped in 20 days after payment
Packaging Detail: As request, API Square, Hexagonal Kelly Pipe Packing
Shaanxi APS Machinery Equipment Co., Ltd.
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Response Rate
91.7%
On-time delivery rate
US$ 180,000+
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API SPEC. 7-1Oil Field Square Kelly, Hexagonal Hex Kelly, Oil Drilling Kelly Pipe

 

Product Description

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, and 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. All milling processes are performed on specially designed rigid Kelly mills to ensure tight tolerances and high quality drive sections.

 

Technical parameter

 

Nominal Size(in)Top Connection(LH) Bottom ConnectionI.D.(in)Drive Section(in)
Standard O.D.(in)Optional O.D.(in)Square  O.D.(in)Hex. O.D.(in)SquareHex. AB
2 1/26 5/8 REG LH 7 3/44 1/2 REG LH 5 3/4NC26  85.7 1 1/4 3 1/4 
36 5/8 REG LH 7 3/44 1/2 REG LH 5 3/4NC31  4 1/8NC26  3 3/81 3/41 1/43 3/83 3/8
3 1/26 5/8 REG LH 7 3/44 1/2 REG LH 5 3/4NC38  4 3/4NC31  4 1/82 1/41 3/43 3/84
4 1/46 5/8 REG LH 7 3/44 1/2 REG LH 5 3/4NC46  6 1/4NC38  4 3/42 13/162 1/45 1/24 4/5
6 5/8 REG LH 7 3/44 1/2 REG LH 5 3/4NC50  6 3/8NC38  4 3/42 13/162 1/45 1/24 4/5
5 1/46 5/8 REG LH 7 3/4 5 1/2 FH   7NC46  6 1/43 1/436 3/45 29/32
6 5/8 REG LH 7 3/4 NC56  7NC50  6 3/83 1/43 1/46 3/45 29/32
66 5/8 REG LH 7 3/4  5 1/2  FH 7 3 1/2 5 29/32
6 5/8 REG LH 7 3/4  5 1/2  FH 7 3 1/2 5 29/32

 

Features & Benefits

1. 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.

 

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

 

3. Ultrasonic inspection is performed on all sections.

 

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Test & Production

 workshop-drill pipe

 

Note

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