High Quality Carbon Steel Drill Pipe 1.OD: 10.3-1219. ... A,B,X42,X46,X52,X56,X60,X65,X70,X High Quality Carbon Steel Drill Pipe We can produced drilling pipe( ... freely contact. Regards, We are equipped with facilities of top quality in the world, such as hydraulic upset forging machine, ... pipes are of no defects. All threads are machined by CNC Lathes and inspected with API Spec standard thread gauges. ...