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DRILL STEM ACCESSORIES
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Product description

DRILL STEM ACCESSORIES

Pup joints: 
Any type of pub joints is made from the same material as our drill collars. All connections are phosphate coated to improve resistance to galling. Standard lengths are 5ft,10ft, 15ft, 20ft, and additional sizes are available upon request. Integral pub joints have the same properties in tensile, yield and torsion as compared with S-135 which has the same ID, All products are conformed with API Specification.

   Lift subs and lift plugs: 
   Lift subs and lift plugs are manufactured to the same specifications used for drill collars.
   (A) Lift plug plate diameter is approximately 2 Inches larger than drill collar diameter.
   Lift subs can be ordered with top connection.

Lifting size for drill collar

No.


Nominal sizeD ± 0.08(1/32)mm(in)

Inside diameter d/mm

Connection of pin thread

Lifting end

Thread type

Outside Diameter DP ± 0.08( ± 1/32)mm(in)

Bevel Diameter DF/mm

Length of tong snap-in LPB/mm

Outside Diameter DB ± 0.08mm

Round angle radius of elevator shoulder end RSE ± 0/04mm

Length of tong snap-in LB/mm

1

73.0(2 7/8)

31.8

NC23

79.4(3 1/8)

76.2

250.0

111.1

4.8

100.0

2

44.5

NC26(2 3/8)

88.9(3 1/2)

82.9

3

88.9(3 1/2)

54.0

NC31(2 7/8)

104.8(4 1/8)

100.4

127.0

4

50.8

NC35

120.7(4 3/4)

114.7

5

68.3

NC38(3 1/2IF£©

127.0(5)

121.0

6

127.0(5)

71.4

NC44

152.4(6)

144.5

168.3

6.4

7

158.8(6 1/4)

149.2

8

82.6

95.3

NC46(4IF)

158.8(6 1/4)

150.0

9

165.1(6 1/2)

154.8

10

171.5(6 3/4)

159.5

11

NC50(4 1/2IF)

177.8(7)

164.7

12

184.2(7 1/4)

169.5

13

NC56

196.8(7 3/4)

185.3

300.0

14

203.2(8)

190.1

15

6 5/8REG

209.6(8 1/4)

195.7

16

NC61

228.6(9)

212.7

17

7 5/8 REG

241.3(9 1/2)

223.8

18

NC70

247.7(9 3/4)

232.6

19

254.0(10)

237.3

20

NC77

279.4(11)

260.7

 

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QINGDAO OILRIG TRADE CO., LTD. has been dedicating itself to export business of oilfield equipment and components to North/South America, Europe, Middle East, South East Asia .

Our Warranty

OILRIG warrants our products for a period of one year to be free from defective material and workmanship. OILRIG's products equal or exceed the quality and tolerances of the products provided by the original manufacturer. 

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