QDQ-JD series insulation joints are buried steel requirements of the sealing performance and electrical corrosion protection engineering requirements of the electrical insulation properties of the pipeline joint. It contains a combination of parts, insulation board, packing, sealing ring and tube etc.. With the end of the whole structure of welding manufacturing (buried insulating joint, maintenance free) is my company in 90s introduced the Italy high and new technology, the internal structure of the O type or U type rubber ring seal, so far ahead of the domestic market. In the production process strictly enforce the GB150-2011 "pressure vessels", HG/T20583-2011 "chemical container steel structure design regulations" and "JB/T4730-2005" nondestructive testing of pressure equipment and other requirements, the product quality can be improved steadily.

Product performance:

High insulation:

QDQ-JD series insulating joint insulation ring with high compressive strength (less than 350N/mm2), low strength, anti-aging material is greatly improved, insulation resistance value is greater than 10M, is far greater than that of other insulating joint resistance value, thus greatly improving the insulation, reducing leakage current, can give full play to the effect of Cathodic protection, improve the operation the life of Bai protection pipeline.