Integrated Insulated Joint is the key part of long distance pipeline station applied in oil and gas pipeline station under the ground and on the ground for insulating the section with cathodic protection systems from the section without cathodic protection systems as a connection device.

Advantaged Technology

JYJT-U Integrated Insulated Joint is the important scientific and technical innovation achievement of China Petroleum Pipeline Bureau with 4 special proprietary technologies,1 proprietary software,1 enterprise standard and 1 national patents , passing appraisal of new product carried out by CNPC in Sep.28,2009 and having the second award of scientific and technical progress issued by CNPC in 2010.

JYJT-U-12/1400 integrated insulated joint has excellent sealing performance, strength performance and insulating performance with the analysis of finite element stress and strain. With U-type integrated sealing structure of symmetrical balance, excellent material, special assembly equipment and technology, it passed 10 tests, such as type test, hydrostatic pressure test, hydrostatic pressure test plus bending moment test, hydrostatic fatigue test, gas leak test, dielectric strength test, electrical resistance test etc.

Practical Application

The localization of insulated joint with high pressure and large diameter marks that independent innovation of pressure piping components gets great breakthrough and breaks foreign monopoly in this field. JYJT-U integrated insulated joints were successfully applied in domestic and overseas projects, such as west-east gas transmission pipeline Ⅱ, Zhongwei-Guiyang pipeline, China-Myanmar pipeline, west-east gas transmission pipeline Ⅲ west section, Shanxi-Beijing gas transmission pipeline Ш, Myanmar-Thailand pipeline, Iraq pipeline etc.. Insulated joints with the highest pressure and the largest diameter in china used in west-east gas transmission pipeline Ш west section realized localization in 2013, and will have good application prospect.