Duxaoil manufactures sucker rod couplings with quality materials under the requirements of API 11B.
The couplings are manufactured in several diameters ranging from 3/4" to 1" and in grades SM and DES according to API 11B.
Duxaoil uses API standard materials, CNC technology and the latest generation toolkit.
Each single product in controlled with certified gauges to assure dimensional attributes.
Recommended Practice for the Running and Make Up of API Steel Sucker Rods and Pony Rods
When resistance to stress-corrosion cracking in higher than efficiency of carbon steel couplings, Duxaoil developed Durinox couplings.
Couplings are manufactured with austenitic stainless steel with high levels of nickel and titanium based on AISI 321 in order to increase resistance to corrosion by chemical agents on parts under tension efforts.
When the need of resistance exceeds the class T couplings, Duralitte has developed the DES class couplings.
These coupling are made of special steel, to increase the fluency up to values 980 Mpa and to increase fatigue resistance. These coupling are recommended for deep wells extraction.
The SM coupling was specially developed highly corrosive environments. The coupling is made with steel of class T, so that it has the same mechanical properties in terms of tensile strength and fatigue.
SM class has a nickel-chromium outer coating with a minimum thickness of 200 microns, thermally fused to the braked, confers a hardness ranging from 58 to 62 HRC, wich increases wear resistance and increases corrosion resistance.
The outer surface is rectified according to API roughness values.
Duxaoil T class couplings are used for services from medium to low requirements.
These couplings are made with tensile strength and fatigue resistance according to API requirements.
The couplings are produced in mills CNC lathes, with special emphasis on the surface finishing of the threads in order to increase the fatigue life by not cutting the fibers of the base material.
Within its product list Duxaoil provides the oil market to stem the couplings PR.