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API 7- 1 Certificate AISI 4145H Drill Collar

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US$ 100 - 2,000 MOQ: 1000 Meters
Key Specifications
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Place of Origin:
China
Brand Name:
SINOTAI
Type:
Drill Collar
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Sinotai Petroleum Equipment Co., Ltd.
Silver Verified Supplier
6Yrs
Payment & Shipping
Payment Methods:
Port of Shipment:
Tianjin Shanghai Guangzhou
Delivery Detail:
Delivery time depends on order quantity.

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Place of Origin China
Brand Name SINOTAI
Type Drill Collar
Machine Type Drilling Tool
Certification API
Material Stainless Steel
Processing Type Casting
Use Well Drilling

Drill Collar

Features:

         Drill collars are manufactured from AISI 4145H modified steel, and are supplied in the "as rolled" surface finish condition. Alternative surface finishes are available.

         All connections are phosphate-coated or copper plated to improve resistance to corrosion.  

         We offers optional slip and elevator recesses to improve handling efficiency and safety. Unless otherwise specified, slip and elevator recesses are machined in compliance with API spec 7-1 guidelines.

         Our company offers steel, cast steel and plastic steel thread protectors for its drill stem products.

         We also supply spiral drill collars.Spiral drill collars utilize spiral grooves to make mud circulate freely around the drill collar to equalize pressure and prevent a seal from forming.

Specifications:

Drill Collar Number

Outside Diameter

Inside Diameter

Length

mm

Bevel Diameter DF mm

Ref.Bend g

Strength Ratio

mm

in

mm

in

NC23-31

79.4

3 1/8

31.8

1 1/4

9150

76.2

2.57:1

NC26-35(2 3/8IF)

88.9

3 1/2

38.1

1 1/2

9150

82.9

2.42:1

NC31-41(2 7/8IF)

104.8

4 1/8

50.8

2

9150

100.4

2.43:1

NC35-47

120.7

4 3/4

50.8

2

9150

114.7

2.58:1

NC3850(3 1/2IF)

127.0

5

57.2

2 1/4

9150

121.0

2.38:1

NC44-60

152.4

6

57.2

2 1/4

9150or9450

144.5

2.49:1

NC44-62

158.8

6 1/4

57.2

2 1/4

9150or9450

149.2

2.91:1

NC46-62(4IF)

158.8

6 1/4

71.4

2 13/16

9150or9450

150.0

2.63:1

NC46-65(4IF)

165.1

6 1/2

57.2

2 1/4

9150or9450

154.8

2.76:1

NC46-65(4IF)

165.1

6 1/2

71.4

2 13/16

9150or9450

154.8

3.05:1

NC46-67(4IF)

171.4

6 3/4

57.2

2 1/4

9150or9450

159.5

3.18:1

NC50-67(4 1/2IF)

171.4

6 3/4

71.4

2 13/16

9150or9450

159.5

2.37:1

NC50-70(4 1/2IF)

177.8

7

57.2

2 1/4

9150or9450

164.7

2.54:1

NC50-70(4 1/2IF)

177.8

7

71.4

2 13/16

9150or9450

164.7

2.73:1

NC50-72(4 1/2IF)

184.2

7 1/4

71.4

2 13/16

9150or9450

169.5

3.12:1

NC50-77

196.8

7 3/4

71.4

2 13/16

9150or9450

185.3

2.70:1

NC50-80

203.2

8

71.4

2 13/16

9150or9450

190.1

3.02:1

6 5/8REG

209.6

8 1/4

71.4

2 13/16

9150or9450

195.7

2.93:1

NC61-90

228.6

9

71.4

2 13/16

9150or9450

212.7

3.17:1

7 5/8REG

241.3

9 1/2

76.2

3

9150or9450

223.8

2.81:1

NC70-97

247.6

9 3/4

76.2

3

9150or9450

232.6

2.57:1

NC70-100

254.0

10

76.2

3

9150or9450

237.3

2.81:1

8 5/8REG

279.4

11

76.2

3

9150or9450

266.7

2.84:1

API 7- 1 Certificate AISI 4145H Drill CollarAPI 7- 1 Certificate AISI 4145H Drill CollarAPI 7- 1 Certificate AISI 4145H Drill Collar

 


 

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Sinotai Petroleum Equipment Co., Ltd.
Silver Verified Supplier
6Yrs
Business Type
Trading Company
Year Established
2008
Factory Size
Below 1,000 square meters
Total Employees
11 - 50 People
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