Shandong Longquan Pipeline Engineering Co.Ltd(002671) 3 announced on March 8 that the company and its wholly-owned subsidiaries Longquan Trenchless Pipeline Technology (Jiangsu) Co., Ltd. and Wuxi Xinfeng Pipe Industry Co., Ltd. have obtained the patent certificate issued by the State Intellectual Property Office.
The utility model patent "detection device for sealing airbag and drainage pipeline without water transfer" does not need to carry out full section water plugging and water transfer construction, so as to reduce the construction period and the impact on road traffic; The utility model patent "a cold pressing tee forming extruder" is conducive to reducing the burden of operators and improving the use safety of the device; The utility model patent "a dual phase steel pipe fitting with anti-corrosion optimized structure" can protect the external anti-corrosion layer through the external protective layer, so as to prevent the damage of the external anti-corrosion layer to the first steel pipe base. The external anti-corrosion layer and the internal anti-corrosion layer can prevent the corrosives from corroding the first steel pipe base and the second steel pipe base, so as to improve the service life of the device.
The company said that the acquisition of patent certificates is conducive to give play to the advantages of the company's independent intellectual property rights, promote technological innovation and enhance the company's competitiveness to a certain extent.
