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( ... machined by CNC Lathes and inspected with API Spec standard thread gauges. To improve the galling-resistance during initial break- ... , API7 &7-1, NS-1. RUSSIA RTN, RUSSIA GOST-R, ISO 9001,ISO 14001, OHSAS 18001, Arnco Hardbanding Certificates and ...