High Quality Carbon Steel Drill Pipe 1.OD: 10.3-1219.2mm ... ,A,B,X42,X46,X52,X56,X60,X65,X70,X High Quality Carbon Steel Drill Pipe We can produced drilling pipe(API5D ... freely contact. Regards, We are equipped with facilities of top quality in the world, such as hydraulic upset forging machine, walking ... in accordance to Standards of API 5DP, API7 &7-1, NS-1. RUSSIA RTN, RUSSIA GOST-R, ISO 9001,ISO 14001 ...