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API 5DP AISI 4142H,4130 SS,4145H Heavy Weight Drill Pipe(HWDP),Kelly

  • API 5DP AISI 4142H,4130 SS,4145H Heavy Weight Drill Pipe(HWDP),Kelly
  • API 5DP AISI 4142H,4130 SS,4145H Heavy Weight Drill Pipe(HWDP),Kelly
  • API 5DP AISI 4142H,4130 SS,4145H Heavy Weight Drill Pipe(HWDP),Kelly
  • API 5DP AISI 4142H,4130 SS,4145H Heavy Weight Drill Pipe(HWDP),Kelly
  • API 5DP AISI 4142H,4130 SS,4145H Heavy Weight Drill Pipe(HWDP),Kelly
  • API 5DP AISI 4142H,4130 SS,4145H Heavy Weight Drill Pipe(HWDP),Kelly
  • API 5DP AISI 4142H,4130 SS,4145H Heavy Weight Drill Pipe(HWDP),Kelly
  • API 5DP AISI 4142H,4130 SS,4145H Heavy Weight Drill Pipe(HWDP),Kelly
  • API 5DP AISI 4142H,4130 SS,4145H Heavy Weight Drill Pipe(HWDP),Kelly
  • API 5DP AISI 4142H,4130 SS,4145H Heavy Weight Drill Pipe(HWDP),Kelly
  • API 5DP AISI 4142H,4130 SS,4145H Heavy Weight Drill Pipe(HWDP),Kelly
  • API 5DP AISI 4142H,4130 SS,4145H Heavy Weight Drill Pipe(HWDP),Kelly
  • API 5DP AISI 4142H,4130 SS,4145H Heavy Weight Drill Pipe(HWDP),Kelly
  • API 5DP AISI 4142H,4130 SS,4145H Heavy Weight Drill Pipe(HWDP),Kelly
  • API 5DP AISI 4142H,4130 SS,4145H Heavy Weight Drill Pipe(HWDP),Kelly
  • API 5DP AISI 4142H,4130 SS,4145H Heavy Weight Drill Pipe(HWDP),Kelly
  • API 5DP AISI 4142H,4130 SS,4145H Heavy Weight Drill Pipe(HWDP),Kelly
  • API 5DP AISI 4142H,4130 SS,4145H Heavy Weight Drill Pipe(HWDP),Kelly
  • API 5DP AISI 4142H,4130 SS,4145H Heavy Weight Drill Pipe(HWDP),Kelly
  • API 5DP AISI 4142H,4130 SS,4145H Heavy Weight Drill Pipe(HWDP),Kelly
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Product Description

 

Integral Heavy Weight Drill Pipe

Heavy weight drill pipe is an intermediate-weight drill string element. It can effectively reduce the stress between drill pipe and drill collar and provide part of drill pressure. The integral heavy weight drill pipe is made from AISI 4145H alloy steel and is fully heat treated. The tool joints of welded heavy weight drill pipe are made from AISI 4145H alloy steel too. All physical properties conform to API Spec 7. Every drill pipe is fully inspected by an ultrasonic unit (at full length and over full section). The standard hardbanding is on the pipe connections and center upset. On the pipe ends, it is 4-inch wide hard metal, while on the center upset, it is 3-inch wide hard metal. The hardbanding is completely flush on either side of the connection. The thickness of the hardbanding is not more than 3.2 mm (l/8 in) compared to that of the adjacent pipe surface. The thickness may be specified by customers.
Product type:● Standard integral heavy weight drill pipe ● Standard welded heavy weight drill pipe ● Spiraled integral heavy weight drill pipe

According to API Spec.7, integral heavy weight drill pipe is made of forged or rolled AISI 4142H-4145H. , and formed by hot forging as a whole and fully heat-treated. Tool joints connections and central upset can be with hardbanding.. The types of hard banding include Arnco 100XT and 300XT. All threads are cold rolled, phosphated, and copperized, and they are machined with CNC Lathes –Double –shouldered, including some special threads.

Specification for integral heavy weight drill pipe

Specification

Outer diameter

Inner diameter

connection

body

W/p

K

g

 

Style

Outer diameter

A

DF

mm

Upset

 

D

Center area

mm

B

Bottom

area

mm

 

 

mm

in

mm

in

mm

in

 

I Type (length/p 9300mm)

 

6 5/8FH-Ⅰ

168.3

6 5/8

114.3

4 1/2

6 5/8FH

209.6

8 1/4

195.70

184.2

176.2

965

 

5 1/2FH-Ⅰ

139.7

5 1/2

92.1

3 5/8

5 1/2FH

177.8

7

170.7

152.4

144.5

730

 

NC50-Ⅰ

127.0

5

76.2

3

NC50

168.3

6 5/8

154.0

139.7

130.2

700

 

NC46-Ⅰ

114.3

4 1/2

71.4

2 13/16

NC46

158.8

6 1/4

145.3

127.0

117.5

585

 

NC38-Ⅰ

88.9

3 1/2

52.39

2 1/16

NC38

120.7

4 3/4

116.3

101.6

92.1

370

 

NC31-Ⅰ

73.03

2 7/8

50.8

2

NC31

104.8

4 1/8

100.4

84.1

81.0

220

 

II Type (length/p 13500mm)

 

NC50-II

127.0

5

76.2

3

NC50

168.3

6 5/8

154.0

139.7

130.2

945

 

NC46-II

114.3

4 1/2

71.4

2 13/16

NC46

158.8

6 1/4

145.3

127.0

117.5

790

 

Tolerance

C

Outer diameter

E

Inner diameter

L

Length

DF

chamfer

Inner and outer thread connection

Upset O.D.

D

B

±0.8

±1.60

±150

±0.4

±0.8

±0.75%D

+0.8

0



Kelly is made from 4145H alloy steel which is quenched and tempered at full length. The hardness is 285-341 BHN and the minimum impact value is 54J as per ASTM A370 Charpy-V. Kelly ends and drive sections, internal diameters and connections are machined and inspected according to API Spec 7. Kelly bar is inspected by ultrasonic unit. The wall thickness of each flat of the drive section is verified ultrasonically.
Product type: ● Square kelly ● Hexagon kelly

Square Kelly drive section

 

 

 

 

Specification

Length for drive section

Full length

Length for drive section

Upper box connection

Low pin connection

 

Inner

Diameter

LD

standard

LD

optional

L

Standard 

L

Optional

DFL

across flate

DC

Across

corner 

DCC

Across

Concer

 

RC

Radius

 

RCC

Radius

t

wall thickness eccentric

bore

LH rotary box connection

Outer diameter

Bevel diameter

label

DLR

outer diameter

LL

length

DF

bevel

diameter

Standard

optional

DU

standard

DU

optional

LU

length

D

Standard F

D

optionalF

63.5

2 1/2

11280

 

12190

 

63.5

83.3

82.55

7.9

41.3

11.43

6 5/8

REG

41/2

REG

196.9

146.1

406.4

186.1

134.5

NC26

85.7

508

82.9

31.8

76.2

3

11280

 

12190

 

76.2

100.0

98.43

9.5

49.2

11.43

6 5/8

REG

41/2

REG

196.9

146.1

406.4

186.1

134.5

NC31

104.8

508

100.4

44.5

88.9

3 1/2

11280

 

12190

 

88.9

115.1

112.7

12.7

56.4

11.43

6 5/8

REG

41/2

REG

196.9

146.1

406.4

186.1

134.5

NC38

120.7

508

116.3

57.2

108.0

4 1/4

11280

15540

12190

16460

108.0

141.3

139.7

12.7

69.9

12.07

6 5/8

REG

41/2

REG

196.9

146.1

406.4

186.1

134.5

NC46

158.8

508

145.3

71.4

108.0

4 1/4

11280

15540

12190

16460

108.0

141.3

139.7

12.7

69.9

12.07

6 5/8

REG

41/2

REG

196.9

146.1

406.4

186.1

134.5

NC50

161.9

508

154.0

71.4

133.4

5 1/4

11280

15540

12190

16460

133.4

175.4

171.45

15.9

85.7

15.88

6 5/8

REG

 

196.9

 

406.4

186.1

 

51/2FH

177.8

508

170.7

82.6

133.4

5 1/4

11280

15540

12190

16460

133.4

175.4

171.45

15.9

85.7

15.88

6 5/8

REG

 

196.9

 

406.4

186.1

 

NC56

177.8

508

171.1

82.6

 

 

Product Image





















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