CTRI, manufacturer of carbide inserts in China since 1956’.
Chengdu Tool Research Co., Ltd is government company in manufacturing carbide cutting tools in China since 1956's.
Producing API threading insert and CNC cutting insert for oil & gas pipe.
Including ROUND threading/ BUTTRESS threading for casing / tubing / coupling.
Perfect cutting performance in P110 N80 N80Q J55 K55 pipe grade.