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 ... inspection. We strictly carry out API spec Q1 quality control system and API Spec 5DP production standard. We have a complete ...