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BOX to BOX Drill Sub Adapters

BOX to BOX Drill pipe Sub adapter: Product detail: DTH tools factory Kingdrilling can manufacture various tool joints, drilling joints, crossover coupling and blank joints, drill pipe joint, lock joints, etc. Drill pipe usage notes: 1.New tool joint should be pasted thread oil before connection...
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BOX to BOX Drill pipe Sub adapter:

Product detail:

DTH tools factory Kingdrilling can manufacture various tool joints, drilling joints, crossover coupling and

blank joints, drill pipe joint, lock joints, etc.

Drill pipe usage notes:

1.New tool joint should be pasted thread oil before connection

2.Make up and break at least 3 times before drilling

3.Hard bending and plastic coating can be processed according to costumer special requirement

Sub adapters: Pin-Box type, Pin-Pin type, Box- Box type;


BOX to BOX adapter details:

Connection

Length  C (mm)

Length  Shoulder
  J (mm)

Width   Spanner flats  E (mm)

Std bore
  d

Outside  diameter

Across  Flat F(mm)

Box up A

Box down B

Top D1 (mm)

Bottom D2 (mm)

API2-3/8"REG

API2-3/8"REG

219

57.1

50.8

38.1

88.9

88.9

69.85

API2-7/8"REG

API2-3/8"REG

219

69.85

50.8

38.1

114.3

88.9

98.4

API2-3/8"REG

API3-1/2"REG

128.6

57.1

50.8

38.1

88.9

114.3

69.8

API3-1/2"REG

API3-1/2"REG

241.3

69.85

50.8

44.45

114.3

114.3

98.4

API3-1/2"REG

API4-1/2"REG

269.8

88.9

50.8

58.7

114.3

146

98.4

API2-7/8"REG

API3-1/2"REG

241.3

69.85

50.8

44.45

114.3

51.7

98.4

API4-1/2"REG

API2-7/8"REG

250.8

76.2

50.8

44.45

114.3

146

98.4


FAQ:

1. How about the common packing?

A: If there is no special packing demand, we will take it as our normal packing. First in small carton, and then put in the bigger carton together to make sure goods completed.


2. Can I expect a quality products?

A: Yes. mature production technology ensuring the quality satisfy international request.


3. Fast delivery time:

A: Usually it takes 25 days for production.only 3 or 5 days if we have stock of your request size.

11.Methods of Payment:

T/T (Telegraphic Transfer) or Western Union.


4.What is the materials?

Steel is 42CrMo, Alloy is from from ZHUZHOU 601


5.How to choose the suitable Pneumatic DTH hammer?

a. Hole Size:                

It is better for you to choose the one which the outside diameter is nearest to the hole diameter. This will reduce the hole collapse, and the hole cleaning is easier.

b. Air Consumption:  

You must consider about the consumption of compressed air when you use the Pneumatic DTH hammer. Generally speaking, with the raising of the size of hammer, peak performance requires higher compressed gas consumption and lower pressure. In order to make sure each hammer will be used in the proper consumption of compressed air and pressure, please refer to the attachment.

c. Drill rig Capacity:   

The larger bit and hammer will need the drilling rig to provide greater torque and promoting force, but do not exceed the maximum load of the drill. As for the other questions about drill ability, please consult your sales representative


6. How to choose the suitable head face of the DTH drill bit?

a. Concave:

Suitable for all kinds of formation, especially for deep well drilling, perpendicularity of the hole is wonderful.

b. Convex: 

Suitable for the formation of moderate hardness stratum, drilling efficiency is good, borehole perpendicularity is moderate.

c. Flat:        

Suitable for special hard formation stratum, especially for fracture, crack spacing and complex formation drilling effect is very good, has the good perpendicularity of the borehole.

 


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