Spiral Drill Collar

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Gold Member Since 2009

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Manufacturer/Factory & Trading Company

Product Description

Spiral drill collar is used to reduce contact area with hole so as to avoid efficiently bit sticking from differential pressure. TIANHE brand spiral drill collars are manufactured strictly according to API Spec7-1 and Standard SY5144.
O. D. Cutting Lead      25.4
mm in A(mm) B(mm) mm
86 3 3/8 3.5      0.79   679
98.4 3 7/8 4.0      0.79   914
101.6      111.1 4      4 1/8 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 5.6      0.79 1626
203.2      225.4 8      8 7/8 9.5      1.59 6.4      0.79 1727
228.6      250.8 9      9 7/8 10.3      2.37 7.1      1.59 1829
254.0      276.2 10      10 7/8 11.1      2.37 7.9      1.59 1930
279.4 11 11.9      2.37 8.7      1.59 2032

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Gold Member Since 2009

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Manufacturer/Factory & Trading Company
Number of Employees
226
Year of Establishment
2006-07-11