The drill rods comply with the provisions of API SPEC 5D & API SPEC7. Specifications1.Drill Pipe 2.size from 48 ... 1/4"-48"( 13.7mm - 1219.2mm )Main Standard: API 5L, ASTM A 106, ASTM A53, GB ... 8163, EN10216,BS&JIS&DINMaterial:A106GrA,B,C,A53GrA,B,C,API 5L X70, X65, X60, X42, ... painting / 1PE/ 3PE/ FBE coatedMarking: According to standard or according the client's requirementPacking: In bundles or ...