Jiangsu Dilong Pipe Co., Ltd. China (Mainland)

Jiangsu Dilong Pipe Co., Ltd. is a member of the Township Thermal Supply Construction Committee of China, the Shanghai Energy Research Institution and the Motor Construction of Thermal Insulation Technical Committee We have a manufacturing safety permit: 1. B grade permit for pressure piping manufacturing 2. Manufacturing scope for pressure tube: A2 Grade qualification; Implementation criterion: GB9711.1-1997 Specifications: Grade of the steel: L175-L450 3. Manufacturing scope of the pressure pipe Implementation criterion: SY/t5057-2000 Specifications: Wall thickness: 5.0-25.0mm Our fixed assets are 80 million RMB. There are more than 200 employees in our company and our area is 30 acres. We have our own loading dock with a 500T capacity and 22 cranes (3-35 tons/each). We have three spiral pipe welding facilities, and two sets of underground thermal insulation pipe manufacturing facilities. We have more than fifty technical personnel, including eight senior technical personnel who have won six national invention patents and ten new state of the art patents. Our annual production capacity is five hundred million RMB. We are the largest production manufacturer of specialized underground heating pipes, with the longest manufacturing history in East China. With the rapid growth of the Chinese economy, and industrial development, especially in the Yangtze River Delta Area, our yearly production has been growing at a rapid pace. The sale of our products has expanded from the East China region to all of China. In order to achieve the maximum energy savings, we have solved the pipe distortion problem by cooperating in joint research and development with Tianjin University and Southeast University, developing of a temperature tracking detection system using the vacuum thermos technology. Meanwhile, we are jointly involved in R&D with Nanjing University of Aeronautics and Astronautics in the technological development of surface treatment on metal infiltration double glow plasma and large diameter stainless steel spiral welded pipes. The foundation of our success: Advanced technology and prioritizing product development 1. Diameter 90-1400(-20-120) High density production and installation of polyethylene, polyurethane heat conserving underground pipe. 2. Diameter 32- 1020(150-350). We are the first manufacturer in China of the production and installation of the in insulated underground steel piping and coupling. 3. We are the first domestic user for the newest imported anti-corrosion polyurethane elastomer coating technology. (The earliest domestic enterprise that had earliest underground thermal piping.) 4. All large diameter stainless steel pipes are spiral welded. 5. Double spiral-submerged arc welded pipes are available in diameters of 219-920; 720-3000; steel grade 80; large diameter spiral type pipes, low and middle pressure, fluid pipes, and pile pipes are 2.2m in width. We use the most advanced manufacturing equipment and constantly improving production processes 1, High density polyethylene pipes: SJ-90b, SJ-10B, High pressure injection molding equipment H-220kg/minute, 31Mpa Injection molding equipment, HP6012 fully automatic derusting equipment, Automatic arc welding and X-ray fission detector, H-20/35, H18/18 automatic folding Sima Polyurea Spray equipment. 2, QLH-1 Type 1000, type 1200 and type 1500 Lincoln automatic submerged arc welding machines. 3, Highly efficient heat conserving material and exacting production process, highly anticorrosive and water proof polyurea elastomer coating technology. 4, Superior production processes, and highest quality control and testing. 5, Annual production capacity of 120km of underground water pipes and 50km of underground steam pipes. 6, We have a 500 ton terminal which can load 80m long spiral welded pipes. 7, Thirty thousand Tons 219-3000stainless steel spiral welded pipe manufacturing.