China OCTG Drill Pipe manufacturer PipesTec supplies API 5DP OCTG Drill Steel Pipe API SPEC 5DP, Grade E75, X95, G105, S135, for well drilling, 6.88- 12.7 mm.
OCTG Coupling manufacturer PipesTec supplies API SPEC 5CT OCTG Tubing Coupling, Casing Coupling, Drill Pipe Coupling, Grade J55, K55, N80, L80, C95, P110.