Oil Drill Pipe in active demand 1.OD: 10.3-1219.2mm 2.WT: 1. ... ,X52,X56,X60,X65,X70,X Oil Drill Pipe in active demand We can produced drilling pipe(API5D,APISEPC7,API5CT) of ... meet even surpass the requirements of API Specification, heat treatment is on the basis of the actual chemical analysis of each ...