Qingdao Nokunda Drilling Tools Co., Ltd.

News Center
Contact Us

 

Qingdao Nokunda Drilling Tools Co., Ltd.  

 No. 15 Donghai Xi Road, Shinan District, Qingdao City, Shandong Province, China

Whatsapp: +86 13792983690

Wechat: +86 13792983690 

Email: [email protected]

 

 

contact

 

Box-Box Adapter

Box-Box Adapter
Product Name : Box-Box Adapter
Directions

 

Before drill pipe can be screwed onto the DTH hammer, a special short length of pipe with a drill pipe connection thread on the top and a DTH hammer connection thread on the bottom is added.

Connection

C

Length

(mm)

J

Length Shoulder

(mm)

E

Width spanner flats(mm)

d

Std bore

(mm)

 

Outer diameter

F

Across Flat

(mm)

Box A

Thread Type B

Top D1

Bottom D2

API 2 3/8” REG

API 2 3/8” REG

219

57.1

50.8

38.1

88.9

88.9

69.85

API 2 7/8” REG

API 2 7/8” REG

219

69.85

50.8

38.1

114.3

88.9

98.4

API 2 3/8” REG

API 3 1/2” REG

128.6

57.1

50.8

38.1

88.9

114.3

69.8

API 3 1/2” REG

API 3 1/2” REG

241.3

69.85

50.8

44.45

114.3

114.3

98.4

API 3 1/2” REG

API 4 1/2” REG

269.8

88.9

50.8

58.7

114.3

146

98.4

API 2 7/8” REG

API 2 3/8” REG

241.3

69.85

50.8

44.45

114.3

51.7

98.4

API 4 1/2” REG

API 3 1/2” REG

250.8

76.2

50.8

44.45

114.3

146

98.4

 

Inquiry
If you need any information before purchase, you can click our online service, If it is not availabl
Title:
 
Your name:
  *
Email:
  *
Telephone:
 
Message:
  *
Code:
    *
       Items marked with * have to be filled in