Drill Collar

Our high speed of oil field drill collars are made of 4145H MOD.
We has been certified by API Q1 Quality Management System,License of Using Official API 7-1 Monogram.
We follow the Quality Policies'' Keep improving,Produce perfect machinery;Pursue excellence,Create First-Class Brand.''
4145H MOD drill collars are widely welcomed by more than twenty countries as following:United States,Canada,Australia,France,Russia,Middle East,Brazil and Singapore etc.
Our Nationl leve II lab controls the quality.

We has been certified by API Q1 Quality Management System,License of Using Official API 7-1 Monogram.
We follow the Quality Policies'' Keep improving,Produce perfect machinery;Pursue excellence,Create First-Class Brand.''
Non-magnetic Of High Strength Drill Collars are widely welcomed by more than twenty countries as following:United States,Canada,Australia,France,Russia,Middle East,Brazil and Singapore etc.
Our Nationl leve II lab controls the quality.