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Hexagonal Kelly

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US$ 1 - 2 MOQ: 1000 Pieces
Key Specifications
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Brand Name:
FD
Place of Origin:
China
Type:
Rotary Table
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Found Petroleum Equipment Co., Ltd.
Payment & Shipping
Payment Methods:
Port of Shipment:
Tianjin
Delivery Detail:
Delivery time depends on order quantity.

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Brand Name FD
Place of Origin China
Type Rotary Table

Hexagonal Kelly

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 Heavy Weight 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.

We are a square Kelly manufacturer in China, our company has 2 sucker rod workshops, 3 production lines. We guarantee on-time delivery, No middleman!

Square Kelly Specification:

Specification

Drive part length

Overall length

Drive part

Upper internal threaded joint

Lower external threaded joint

Inner diameter

Standard
LD

Selection
LD

Standard 

Selection

Square size
DFL

Across corner
DC

Across corner
DCC

Radius
RC

Radius
RCC

Eccentric hole minimum wall thickness

Screw thread specification and  left rotate type

Outside diameter

Chamfering diameter

Thread specification and type

Outside diameter
DLR

Length
LL

Chamfering diameter
DF

Standard

Selection

Standard

Selection  DU

length LU

Standard DF

Selection DF

63.5

（2½）

11280

12190

63.5

83.3

82.55

7.9

41.3

11.43

（65/8）REG

(4½)
REG

196.9

146.1

406.4

186.1

134.5

NC26
(23/8IF)

85.7

508

82.9

31.8

76.2

3

11280

12190

76.2

100

98.43

9.5

49.2

11.43

（65/8）REG

(4½)
REG

196.9

146.1

406.4

186.1

134.5

NC31
(27/8IF)

104.8

508

100.4

44.5

88.9

（3½）

11280

12190

88.9

115.1

112.7

12.7

56.4

11.43

（65/8）REG

(4½)
REG

196.9

146.1

406.4

186.1

134.5

NC38
(3½IF)

120.7

508

116.3

57.2

108

（4¼）

11280

15540

12190

16460

108

141.3

139.7

12.7

69.9

12.07

（65/8）REG

(4½)
REG

196.9

146.1

406.4

186.1

134.5

NC46
(4IF)

158.8

508

145.3

71.4

108

（4¼）

11280

15540

12190

16460

108

141.3

139.7

12.7

69.9

12.07

（65/8）REG

(4½)
REG

196.9

146.1

406.4

186.1

134.5

NC50
(4½IF)

161.9

508

154

71.4

133.4

（5¼）

11280

15540

12190

16460

133.4

175.4

171.45

15.9

85.7

15.88

（65/8）REG

196.9

406.4

186.1

5½FH

177.8

508

170.7

82.6

133.4

（5¼）

11280

15540

12190

16460

133.4

175.4

171.45

15.9

85.7

15.88

（65/8）REG

196.9

406.4

186.1

NC56

177.8

508

170.7

82.6

Hexagonal Kelly Specification mm（in):

Specification

Drive part lengthти длины

Overall length

Drive part

Upper internal threaded joint

Lower external threaded joint

Inner diameter

Standard
LD

Selection
LD

Standard

Selection

Square size
DFL

Across corner
DC

Across corner
DCC

Radius
RC

Radius
RCC

Eccentric hole minimum wall thickness

Screw thread specification and  left rotate type

Outside diameter

Chamfering diameter

Thread specification and type

Outside diameter
DLR

Length
LL

Chamfering diameter
DF

Standard

Selection

Standard DC

Selection  DU

length LU

Standard DF

Selection DF

63.5

（2½）

11280

12190

76.2

85.7

85.73

6.4

42.9

12.1

（65/8）REG

(4½)
REG

196.9

146.1

406.4

186.1

134.5

NC26
(23/8IF)

85.7

508

82.9

31.8

76.2

3

11280

12190

88.9

100.8

100

6.4

50

13.3

（65/8）REG

(4½)
REG

196.9

146.1

406.4

186.1

134.5

NC31
(27/8IF)

104.8

508

100.4

44.5

88.9

（3½）

11280

15540

12190

16460

108

122.2

121.44

9.9

60.7

15.9

（65/8）REG

(4½)
REG

196.9

146.1

406.4

186.1

134.5

NC38
(3½IF)

120.7

508

116.3

57.2

108

（4¼）

11280

15540

12190

16460

133.4

151.6

149.86

9.5

75

15.9

（65/8）REG

-

196.9

-

406.4

186.1

-

NC46
(4IF)

158.8

508

145.3

71.4

108

（4¼）

11280

15540

12190

16460

133.4

151.6

149.86

9.5

75

15.9

（65/8）REG

-

196.9

-

406.4

186.1

-

NC50
(4½IF)

161.9

508

154

71.4

133.4

（5¼）

11280

15540

12190

16460

152.4

173

173.02

9.5

86.5

15.9

（65/8）REG

-

196.9

-

406.4

186.1

-

5½FH

177.8

508

170.7

82.6

133.4

（5¼）

11280

15540

12190

16460

152.4

173

173.02

9.5

86.5

15.9

（65/8）REG

-

196.9

-

406.4

186.1

-

NC56

177.8

508

170.1

82.6

 

Steel Mark

Chemical Composition%

C

Si

Mn

P

S

Cr

Mo

Cu

Al

4145H

0.42～0.48

0.15～0.35

0.90～1.20

≤0.03

≤0.03

0.90～1.20

0.15～0.25

≤0.2

0.025～0.045

Other Elements：N≤0.015，Ni≤0.5

Mechanical Property:

Mechanical Property

Outside Diameter Range

Yield Strength

Tensile Strength

Elongation
A%


HB

Charpy impact 
Akv  J

mm

in

MPa

Psi

MPa

Psi

79.4～171.4

3-1/8～6-3/4

≥758

≥110000

≥965

≥140000

≥13

285～341

≥54

177.8

7

≥689

≥100000

≥930

≥135000

≥13

285～341

≥54

Under special conditions, the impact work of the charpy can be determined as greater than 70J according to the supply and demand


Product Tags: Hexagonal Kelly , Heavy Weight Drill Pipe , square Kelly manufacturer

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Found Petroleum Equipment Co., Ltd.
Business Type
Manufacturer
Year Established
2005
Annual Export Value
US$10 Million - US$50 Million
Port of Shipment
Tianjin
Contact Supplier Request Quote Chat Now

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