The DILONG pipe Co., Ltd. has total numbers of over 50 engineering and technical personnel,among of which 8 senior professional technical specialists. The enterprise had been awarded 6 national invent patents and 10 utility model awards; and has reached an annual production value RMB 500 million Yuan.  It is the first production manufacturer and the largest professional buried heating pipe production based in the east of China.
   Followed by Chinese national economy develops at full speed, specially the industrialization and urbanization developing belt at the Yangtze River Delta and along the region. The DILONG pipe Co., Ltd. has had its production value of buried heat pipes gone up rapidly in the recent five years. Product sales covered the East China and throughout the country. For achieving better energy saving result, and solving heat loss problems during the treatment, the enterprise has joint research and development with 'Tianjin University' and 'Southeast University' in developing temperature tracking detection system; more so, joint R&D with ' Nanjing University of Aeronautics and Astronautics' in developing surface treatment technology on metal infiltration double
 glow plasma, heavy-caliber stainless steel spiral welded pipe,etc. The enterprises' success is based on:
Advanced technology and appropriated production structure
 Diameter¦Õ90¡ª¦Õ1400(-20¡æ--120¡æ)production and installation of High-density polyethylene, polyurethane heat preservation buried pipe,also rigid polyurethane buried pipes;Diameter¦Õ32¡ª¦Õ1020(150¡æ--350¡æ)production and installation of steel complex heat preservation buried steam pipe and its accessories (the first manufacturer nationally);imported anti-corrosion coating polyurea elastomer technology (earliest domestic user for buried pipe;Production of double spiral-submerged arc welded pipe, diameter¦Õ219--¦Õ920,¦Õ720--¦Õ3000£¬steel material¡Á80 grade,plate breadth 2.2mm larger diameter spiral type pipes, and low-, middle-Pressure fluid pipe, Pilepipe,heavy-caliber stainless steel spiral welded pipe.
Advanced equipments and improved production process
   High-density Polyethylene pipe SJ-90B, SJ-150B; High pressure extruder equipment; H-220Kg/h,31Mpa Injection equipment; HP6012B fully automatic derusting equipment; Automatic arc welding and X-ray fission detector;H-20/35¡¢H-18/18 automatic folder Sima polyurea spray
equipment;GZ(Y)220 high density polyurethane foam automatic high-pressure injection molding equipment and testing means;QLH-1 Type 1000, Type 1200, Type1500 Lincoln automatic submerged arc welding machine;High performance in heat preservation materials and standardized production process. High anti-corrosion performance and waterproof polyurea elastomer coatings technology; Improved production process and  rigorous management systems in quality control and testing.An annual Production capability of 120km buried water pipes, and 50km buried steam pipes;A class 500 ton terminal self provided which has a capacity of ship load 80 meters long spiral welded pipe.
Solid technical strength and new management concepts
    The Jiangsu DILONG pipe enterprise is always persisting in horizontal cooperating with domestic senior project institute and technical colleges. The enterprise also has an engineering and technical team of highly responsible specialists working at product design and development, manufacture, after sales service and other important positions.     
  Complied with the famous saying of Accepts talent of the great-hearted, models hundred-year great undertaking, the company fully respects talents, provided ample space for its employees' self-development. Improved management system and advanced motivation strategy are the driving force behind the company's forward which increased products attraction and maximum satisfaction of customers¡¯ demands.
Being an outstanding industry leader is the fundament of the enterprise's further development.
  In 2006, the use of an automatic NC slitting & straightening equipment production line (¦Õ416mm ¡Á 2.2m) filled up the blank of its market in Yixing. In 2007 Jiangsu DILONG enterprise has passed the international API quality authentication system, successfully completed a double
 glow plasma surface technical treatment projects in the metallurgical test work. To realize our vision, we sincerely hope that the domestic and foreign entrepreneurs, experts, joint enterprisesand institutions to invest and work together, making joint efforts to enlarge and strengthen all
the enterprises, wish our enterprises have a wonderful future!
Enterprise philosophy
 Pioneering work, constant innovation, superior quality, credibility supremacy, appropriate prices and consistent service. We would like to unite people from all industries and seek mutual development.