West-to-East Gas Transmission Line 3 Insulation Joint

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2017-06-30

West-to-East Gas Transmission Line 3 Insulation Joint

The contract of insulation joint of PN120 DN1200 and PN120 DN400 for the project of Zhongjing connecting line of the third west-east gas transmission line undertaken by our company has completed the strength test, sealing test, air tightness test, bending moment test, insulation resistance value test, electrical insulation strength test, coating defect detection, coating dry film thickness measurement, coating adhesion test, hydraulic pressure fatigue test and other related tests, the inspection results are in full compliance with the new SY/T0516-2016 standard and the new regulations of the technical specification for CDP-S-OGP-MA-016-2016-3 insulated joints. It is the first time in China to adopt the "double new" technical requirements for the production of insulated joints. The company is developing larger diameter insulation joints to meet the needs of long-distance pipeline cathodic protection.

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