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...
Internal upset transit area 120~160mm long Transition area long & smooth, reliable and high quality Equipped with make & break machine, make & break testing can be done as per customer requirement, also, cold rolling of the threads can be carried out as per customer demand In line with NS-1 requirement Thread 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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