... Steel Drill Pipe We can produced drilling pipe(API5D,APISEPC7,API5CT) of 2-3/8",2-7/8",3-1/2,4",4-1/2",5",5-1/2"oil drilling pipe :-Drilling pipe, ... Certificate: API 5DP-0002,API Q1-0964, ISO 9001,ISO 14001,OHSAS 180012) OD:2 3/8” TO 5 1/2” of label 1 or 60 ... oil drilling tools including Drill Pipe, Drill Collar, Heavy Weight Drill Pipe, Kelly,Pup Joint and so on. Our API drill pipes are of high ...