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API 5DP AISI4145H Spiral Drill Collars

  • API 5DP AISI4145H Spiral Drill Collars
  • API 5DP AISI4145H Spiral Drill Collars
  • API 5DP AISI4145H Spiral Drill Collars
  • API 5DP AISI4145H Spiral Drill Collars
  • API 5DP AISI4145H Spiral Drill Collars
  • API 5DP AISI4145H Spiral Drill Collars
  • API 5DP AISI4145H Spiral Drill Collars
  • API 5DP AISI4145H Spiral Drill Collars
  • API 5DP AISI4145H Spiral Drill Collars
  • API 5DP AISI4145H Spiral Drill Collars
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Product Description
Spiral Drill Dollars
 
  • Standard size
Outer diameter
Depth of cut
mm
Pitch
±25.4
mm
Depth of cut
mm
mm
in
98.4
3 7/8
4.0±0.79
914
 
101.6~111.1
4~4 3/8
4.8±0.79
914
114.3~130.2
4 1/2~5 1/8
5.6±0.79
965
133.4~146.1
5 1/4~5 3/4
6.4±0.79
1067
149.2~161.9
5 7/8~6 3/8
7.1±1.59
1067
165.1~177.8
6 1/2~7
7.9±1.59
1168
181.0~200.0
7 1/8~7 7/8
8.7±1.59
1626
5.6±0.79
203.2~225.4
8~8 7/8
9.5±1.59
1727
6.4±0.79
228.6~250.8
9~9 7/8
10.3±2.37
1829
7.1±1.59
254.0~276.2
10~10 7/8
11.1±2.37
1930
7.9±1.59
279.4
11
11.9±2.37
2037
8.7±1.59
·                                                                                                                                                                                                                  
·   Spiral drill collars
·         Based on API Spec.7 the spiral drill collars are made of 4145H modified chromium –molybdenum alloy steel. All threads are phosphated, copper zed or cold rolled. All threads machined with CNC Lathes –Double –shoulderd, including some special threads. The maximum outer diameter of drill collars can amount to 14 inch. 
  • Note: spiral drill has three spiral grooves, right hand and well distributing.
 
 
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