Insulation Joint Product

product overvie

The insulation joint is the essential pressure component necessary for steel pipeline cathodic protection system , broadly applicable to steel pipeline cathodic protection systems. Yongye industry Co.,Ltd . insulating joint adopt unique design as per ASME VIII-1 . Appendix 2 standard and ASME b31.3 code , based on referencing foreign latest product structure to overcome problems of inadequate rigidity ,prone to leak,unable to buried underground short service life etc. The insulating joints have realized buried parts maintenance -free function and allow a service life matching the pipeline.

Thechnical characteristics

Testing and inspection standard

Hydraulic pressure testing with 1.5 times of  designed pressure

AC3000V applied voltage test

DC1000V insulating resistance value test

Visual check

Dimension check

5% the hydraulic added bending test

5% the hydraulic circulation (fatigue) test

5% submerging electrolysis fluid insulating intensity testing

5% the thickness of coated dry velum test