QDQ-JD Series insulated joint is buried steel sealing performance requirements and electrical demand for corrosion protection works electrical insulation properties of pipe joints collectively. It includes assembly of insulating plates, packing, sealing rings, short tubes. Overall structure with welded end manufacturing (direct burial, maintenance-free) of the insulated joint is my company ushers in Italian high-tech, using the internal structure of the O-or U-shaped rubber ring seal, so far ahead of the domestic market. Production strictly enforce GB150-98 "steel pressure vessel", HG20583-98 "Steel Chemical container structure design requirements" and JB4730-2005 "Pressure Vessel NDT", etc., so that product quality can be improved steadily. Shenyang Wensheng Equipment Co., Ltd. Main Products: pigging transceiver, transceivers pigging ball tube, quick open blind plate, wheel paddle fast opening blind, blind quick clamp, quick lock ring Blind plates, filter separators, gas-liquid separator, gas-solid separator, stainless steel Y-type filter, basket filter, cyclone, filter backwash, horizontal filters, vertical filters, cups pigging device, straight pigging, foam pig, support wheel pigging, pigging coating, adjustable pigging, pigging steel brush, scraper pigging, pipeline pigging, Shenyang pipeline cleaning equipment, Shenyang transceivers pigging devices, pipe cleaning equipment.