slick/spiral drill collar is produced by aisi 4145h modified quenched and tempered steel as api specification and implementation of sy / t5144 standard, which can be cold thread rolling, copper or phosphate processing, machine special double shoulder thread and other specifications. slick/spiral drill coll more...
Integral heavy weight drill pipes are manufactured from AISI 4142H-4145H modified drill collar material according to SY/T 5146-1997, thick-walled pipe called integral heavy weight drill pipe was developed to provide a gradual transition from the heavy weight drill pipe to the relatively light weight drill pip more...
Outside Diameter: Φ10mm-Φ711mm (1 8"- 28") Wall Thickness: 1.6- 100mm Quality Standards: API DNV ISO DEP EN ASTM DIN BS JIS GB Length: 6-14m(19.5'-45.5') Grades: ASTM A335 more...