The drill rods comply with the provisions of API SPEC 5D & API SPEC7. Specifications1.Drill Pipe 2.size from 48-1219* 4. ... : API 5L, ASTM A 106, ASTM A53, GB/T 8163, EN10216,BS&JIS&DINMaterial:A106GrA,B,C,A53GrA,B,C,API 5L X70, X65, X60, X42,X46,X52,X56,GR.B ... , Q345, Q235, Q195, 20#, 10#, S235JRH, S275JOH, S355JOH,P325TR1,ST37,ST52,ST37.4,ST45 etcCertificate: API 5L & 5CT, ISO ...