Our liners can be used in various drilling operation conditions. Double metal liner coat used in forging steel production, inner the coat of premium liners is made from forged blank. Endotheca is made of the centrifugal casting high chromium materials, and the inner sleeve reach HB285-330 after normalizing. Honing roughness can reach more than Ra0.8 after grinding. Our product has the characteristics of the wear resistance,

corrosion    A truck-mounted rig,ZJ40CZ, made by Shandong Rongli Petroleum Machinery Co.Ltd leaved the factory for Argentina in September 19th,2014 and  Rongli is responsible for the whole transport process. Besides, some related technicians will go to Argentina for the installation of this drilling rigs , free technical guidance and training. It is the first truck-mounted rig with drilling depth of 4000m exported to Argentina from China, and for our company ,it is also a new breakthrough in South American market following the ZJ50 rig and 18 sets of F1300 mud pumps exported to Venezuela.

Rongli got a cooperation about a complete drilling equipment with Mexican customer in October, 2007, which is the first step to enter South American market. By far, there have been many  sets of equipment settled in Venezuela, Mexico, Brazil and other countries, receiving users’  praise.resistance,high precision and long service life. Our products can be fitted to all souts of conditions and circumstances.