Lifting sub is the special tools for lifting of the drill tools in petroleum, natural gas industry and geologic exploration. Lifting subs are one-piece construction and manufactured from 4145M or 4140HT alloy steel. The Lift Sub can be divided into sloping shoulder (18 degree) and straight shoulder (90 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...
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