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( ... contact. Regards, We are equipped with facilities of top quality in the world, such as hydraulic upset forging machine, ... by CNC Lathes and inspected with API Spec standard thread gauges. To improve the galling-resistance during initial break-in ...