168.28 mm


8.94 mm

wall thickness


(1st generation premium grade) threaded connection
Pervouralsk New Pipe Plant's Finishing Centre for production of OCTG pipes (part of ChelPipe Group) manufactured 2,166 t of new high-strength casing pipes with ChT-VC premium threaded connections at Rosneft’s request.
The pipes are designed for use in challenging production environments, such as deep wells, complex wells, and wells with increased gas/oil ratio.
The ChT-VC connection is used to reinforce vertical and directional wells at oil, gas and gas condensate fields and is gas-tight under combined load (tensile and compression load, internal and external pressure).
ChelPipe Group developed and patented the ChT-VC premium threaded connection in 2009 and upgraded its design in 2012.
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