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Home > Industry Information > US preliminary ruling imposed countervailing duty on some drill pipes

US preliminary ruling imposed countervailing duty on some drill pipes

2021-07-04

The Commerce Department announced on the 8th a preliminary ruling that it plans to levy a countervailing duty on certain drill pipe products imported from China because it has determined that the Chinese government has provided subsidies for the production of such products.
The U.S. Department of Commerce plans to impose a 15.72% countervailing duty on some drill pipe products imported from China. In 2009, the total amount of Chinese drill pipe imports from the United States was 119 million U.S. dollars, which was lower than the 194 million U.S. dollars in 2008.
The Ministry of Commerce plans to make a final decision on this tax collection in August. If the U.S. International Trade Commission determines that imported products pose a substantial threat to U.S. domestic drill pipe producers, the above tariffs will be implemented.

Friction Welding Drill Pipe and Adapter

Friction welding drill pipe and adapter are in accordance with API SPEC 5DP and SY/T5561-2008 Specifications.The steel grade are DZ250,R780,G105,S135 that are after partly or overall heat treatment.The adapter part adopts thermal refining to superior alloy steel 35CrMo or 4137H that`s after thread hardening treatment and phosphating to better antiseize.It also can be produced upon customers` requirements.

Technical specifications of  Friction welding drill pipe

Drill Pipe Diameter

Upset Type

RSC

Model

Steel Grade

mm

Wall 

Thickness

mm

External diameter

 of upset end

mm

Internal diameter 

of upset end

mm

in

60

2 3/8

EU

NC26

DZ50,R780

6/7.11 

65.1

46.10

EU

NC26

G105,S135

7.11

65.1

39.67

73

27/8

EU

NC31

DZ50,R780

9

81.0

54.64

EU

NC31

G105,S135

9.19

81.0

50.80

89

31/2

EU

NC38

DZ50,R780

10

98.4

66.09

EU

NC38

G105,S135

9.35

98.4

63.50

114

41/2

IEU

NC46

DZ50,R780

8

127.0

92.00

IEU

NC46

G105,S135

8.56

119.1

73.02

EU

NC50

G105,S135

8.56

127.0

90.47

127

5

 IEU

NC50

DZ50,R780

10

130.2

90.47

 IEU

NC50

G105,S135

9.19

130.2

90.47

139.7

51/2

IEU

51/2FH

G105,S135

9.17

144.5

96.82

168

65/8

IEU

65/8FH

G105,S135

9.19

176.2

135.00


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