Rugao Yaou Import & Export Trade Co., Ltd.
Main products:Drill Collar,Power Tong,Valve,Manual Tong,DDZ Elevator
Products
Contact Us
  • Contact Person : Mr. Xue aihong
  • Company Name : Rugao Yaou Import & Export Trade Co., Ltd.
  • Tel : 86-513-87635480
  • Fax : 86-513-87632623
  • Address : Jiangsu,Rugao,Room 907 #13 Jinjiuhuafu Ninghai RD.
  • Country/Region : China
  • Zip : 226500

NC-70 Spiral drill collar

NC-70 Spiral drill collar
Product Detailed
1.NC-70 Spiral drill collar. 2.O.D:3 1/8"-11",I.D:1 1/2"-3". 3.NC-23~NC70

The drill collar is mainly used to provide bit weight to drill bit so that drill pipe is in tension. Especially drill collar can keep drill bit centralized and hole track by large rigidity. drill collar are manufactured strictly from API Spec.7 and SY5144 standard.....

Drill Collar Number

O.D.

I.D.

mm

in

mm

in

NC23-31

79.4

3 1/8

31.8

1 1/2

NC26-35(2 3/8 IF)

88.9

3 1/2

38.1

1 1/2

NC31-41(2 7/8 IF)

104.8

4 1/8

50.8

2

NC35-47

120.6

4 3/4

50.8

2

NC38-50(3 1/2 IF)

127.0

5

57.2

2 1/4

NC44-60

152.4

6

57.2

2 1/4

NC44-60

152.4

6

71.4

2 13/16

NC44-62

158.8

6 1/4

57.2

2 1/4

NC46-62(4IF)

158.8

6 1/4

71.4

2 13/16

NC46-65(4IF)

165.1

6 1/2

57.2

2 1/4

NC46-65(4IF)

165.1

6 1/2

71.4

2 13/16

NC46-67(4IF)

171.4

6 3/4

57.2

2 1/4

N50-67(4 1/2 IF)

171.4

6 3/4

71.4

2 13/16

NC50-70(4 1/2 IF)

177.8

7

57.2

2 1/4

NC50-70(4 1/2 IF)

177.8

7

71.4

2 13/16

NC50-72(4 1/2 IF)

184.2

7 1/4

71.4

2 13/16

NC56-77

196.8

7 3/4

71.4

2 13/16

NC56-80

203.2

8

71.4

2 13/16

6 5/8 REG

209.6

8 1/4

71.4

2 13/16

NC61-90

228.6

9

71.4

2 13/16

7 5/8 REG

241.3

9 1/2

76.2

3

NC70-97

247.6

9 3/4

76.2

3

NC70-100

254

10

76.2

3

8 5/8 REG

279.4

11

76.2

3

NC-70 Spiral drill collar



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