API Spec 8A/8C Oilfield Elevator Link

API Spec 8A/8C Oilfield Elevator LinkWeldless elevator links are forged with high quality alloy steel. Elevator links can work in pairs. The elevator link upper eye is used for the hook link ear, and

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API Spec 8A/8C Oilfield Elevator Link


Weldless elevator links are forged with high quality alloy steel. Elevator links can work in pairs. The elevator link upper eye is used for the hook link ear, and the elevator link lower eye is used for the elevator. They are designed and manufactured according to API Spec 8A/8C specification for drilling and production hoisting equipment.

 

·  Adopted high-quality alloy steel and throughout swaged forging process.

·  Designed factor is 2.25-3.

·  WORKING LOAD LIMIT: 75~500 USton.

·  Both the ends are shape by swaged forging process, the pole is pulled by open forging.

·  Special Heated Treated.

·  Every link be NDE checking.

·  Every link test by 1.5 rate work load before deliver.

·  There are signs such as WORKING LOAD LIMIT in the link.

·  It is applicable for drilling operation for deep well and super-deep well.

·  Couple use.


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Type

Model

Connecting Sizes between elevator link lower ears and elevators (mm)

Connecting Sizes between elevator link upper ears and drilling hooks (mm)

L (mm)

Rated Capcity (ton)

r1≤

R1≥

l1≥

l2≥

l3≥

r≤

R2≥

l4≤

l5≥

l6≥

One-Armed Weldless Links

DH40

20

51

20

100

150

22

38

60

120

180

1200

40

DH65

22

51

20

100

150

22

64

70

120

180

1100

65

DH100

22

51

20

100

150

29

64

80

140

190

1500

100

DH150

24

51

25

100

150

29

64

100

140

210

1800

150

DH250

31

70

30

140

200

35

102

140

200

250

2700

250

DH350

37

70

35

140

200

35

102

140

200

250

3300

350

DH500

48

83

50

170

250

48

121

160

240

300

3600

500

DH750

57

127

50

190

318

63

127

190

262

305

3660

750

Type

Model

Connecting Sizes between elevator link lower ears and elevators (mm)

Connecting Sizes between elevator link upper ears and drilling hooks (mm)

L (mm)

Rated Capcity (ton)

r1≤

R1≥

l1≥

l2≥

-

r≤

R2≥

l3≤

l4≥

-

Two Armed Perfection Links

SH25

15

29

20

58

-

22

38

35

90

-

600

25

SH40

20

51

20

100

-

22

38

45

100

-

1100

40

SH65

22

51

20

100

-

22

64

65

120

-

1100

65

SH75

22

51

20

100

-

29

64

75

160

-

1500

75

SH100

22

51

25

100

-

29

64

80

160

-

1500

100

SH150

24

51

25

100

-

29

64

100

160

-

1700

150