联系人 Ms. Amanda
132# Sujinercun, jiangri road, Pingjiang area, Suzhou, Jiangsu
Standard: API Spec Q1 & API Spec 7 Specification: 4"***1/4&#**9;&#**9; Usage: The Drill Collar is used between the drill pipe and the bit in the drill stem. It is used to put weight on the bit so that the bit can drill. We can manufacture different kinds of drilling bits (4"***1/4&#**9;&#**9; in sizes) for different purposes, ranging from PDC bit, triangle polycrystalline diamond drilling bit, cylindrical PDC bit, coring bit, cast bit, PDC deflecting bit, double faces bit and so on. Meanwhile, we also would like to design and manufacture different types of drilling bits according to the special requirements of customers.
