Qingdao Yuanding Group Co., Ltd (hereinafter referred to as QYD) was established in 1966. It is a comprehensive manufacturing enterprise that underwent restructuring from state-owned enterprises. QYD is headquartered in the Central Business District of Qingdao City. The company has seven investment holding companies and two manufacturing industrial parks located in Chengyang and Jimo, covering an area of over 400,000 square meters. With approximately 1,100 employees, including 286 engineers and technicians, all leading products have obtained ISO 9001 and 14001 international system certifications. QYD possesses fixed assets worth more than RMB 300 million and achieves annual sales of RMB 600-700 million. Moreover, it holds the status of being a key legal protection unit, AAA-level credit enterprise, advanced collective within the building materials industry in Shandong Province, as well as an AAA-level credit enterprise and civilized unit in Qingdao City. Additionally, QYD has been honored with the Shandong Quality Management Award.
QYD is one of the largest heat resistant alloy radiant tube manufactuer in the world, has 200000 square meters manufacturing base, could supply one-stop service to all kinds of radiant tubes.
QYD Radiant tubes are widely used in various kinds of heat treatment lines in metallugical industry, such like CAL, CGL and other heating furnaces. Most of Chinese and oversea steel&Iron giants and engineering companies are our longterm customers.
QYD Radiant tubes are applicable to many heating condition, could use combustion gas and electricity as heating resource.
| Item | Content |
| Name | Radiant Tube |
| Material | Heatresistant alloy(HK40/1.4848; 1.4852; 2.4879; more 2), Inconel steel, or customized |
| Process | centrifugal casting or welding pipe for the tube; static casting for elbow parts, flanges are forged |
| Type | I type, U type, W type, P type, double P type |
| Working Temp. | 800-1500ºC |
| Specification | Outside diameter minimum 60mm; wall thinckness minimum 3mm; Max length: >9m |
| Applicable Industry | Metallurgical, petrochemical etc. |
