High Quality Carbon Steel Drill Pipe 1.OD: 10.3-1219.2mm 2.WT: 1.24- ... ,X46,X52,X56,X60,X65,X70,X High Quality Carbon Steel Drill Pipe We can produced drilling pipe(API5D,APISEPC7,API5CT) of 2-3 ... . Regards, We are equipped with facilities of top quality in the world, such as hydraulic upset forging machine, walking beam quenching furnace ...