The speedy development of the electric power industry has achieved the bloom of the power manufacturing industry, and brings about the unprecedented fierce competition.

During this long-drawn-out competition, Composite Insulator has come into being with its advantages of outstanding properties of contamination flashover resistance, extra-high mechanical strength and light weight, free-testing and easy maintenance. It turns out to be the renewal products for the substitutes of the conventional porcelain and glass insulators, and it has been taken into the wide application in those projects, such as, the power transmission of Gezhou and Three Gorges, interregional connected power system and the UHVAC demonstration project among those advanced European and American countries.

The board prospect of the industrial development has impelled the unprecedented growth of the industry, and some composite insulator enterprises are revealing themselves out of the stormy competition.

Xiangfan Guowang Composite Insulator Co. Ltd. takes its industrial advantages in terms of standardization, scale, specialization and qualification. With the development of Chinese electric power industry and through promoting the superiority of its strong brand of Tongli, It’s showing the irresistible force of growth which is pushing Chinese composite insulator techniques to the most forward position of the international insulator industry.

Xiangfan Guowang Composite Insulator Co. Ltd. was composite insulator branch plant of Xiangfan Electric Power Equipments before which was established in 1987, and is the earliest large corporation which develops and produce composite insulator in China. It is the committee unit of composite insulator standardization technique commission of Chinese national and electric power industry and the important supplier of UHVAC insulator for State Grid Corporation of China. It is the first modern company of the industry who has passed ISO9001 Quality System, ISO14001 Environment Management System and OHSAS18001 Occupational Health & Safety Management System Authentication. It’s the high-tech company in Hubei province which firstly exports products to EU, Middle East, South Asia and South Africa etc. The products of Tongli brand has been successively titled as the famous brand of Hubei province, 500KV is assessed as the national- class new product, 1000KV is assessed as the national-class key new product.

Since the product launch in 1989, within accumulatively more than 5 million applications, there’s none accident of breakdown of inner-insulator or Brittle Fracture of FRP Rod happened. Tongli Composite Insulator has markets in 31 provinces and cities of China, and it’s exported to more than 30 countries like Britain, Italy, India, and Iran etc.

Taking its strong technical advantage, the company has developed 10-1000KV AC-DC Long Rod composite insulator, 10-500KV Interphase Composite Spacer, 10-220KV beam (telescopic) composite insulator, the specialized insulator of preventing from bird hazard, anti-windage yaw and flashover, electrified railway used composite insulator, the series products of anti-pollution coating materials. It has two kinds of production technology: injection molding and sheds-ribs. With the annual productive capability of one million of standard composite insulator, it is so-far the largest-scaled production base for composite insulator in the world.

Xiangfan Guowang Corporation Company is a modern enterprise of composite insulator development, production, marketing and service. Since its establishment, the company has been stick to the logo: Science and technology bears a powerful country; Excellence earns the worldwide attention, and it has always been pursuing the target of “the head of the industrial brand-maker and the starter of technical innovation”.

Xiangfan Guowang Corporation Company Composite Insulator R&D Center has been authorized as the technique center of provincial-level Company by Hubei Provincial Government. The center has series of advanced testing and detection equipments of chemical industry, electric power and mechanical engineering. There’re 37 engineers and experts with the above titles. Through collecting the technical experts, the company cooperates with the scientific research units and universities, such as: State Grid HV Institute of Wuhan, Electric Power Science Institute of China, Qinghua University, Wuhan University and Xi’an Jiaotong University etc., and provides with large mount of R&D funds taking efforts on development and application of the key technique of composite insulator. The solid basis of science and research has improved ability of scientific and technical innovation of Xiangfan Guowang Co., 14 techniques of patent make Tongli branded composite insulator has always taken the most forward position of industrial technique.

The analysis and application of the key techniques has optimized the compounding formula of Tongli branded composite insulator with more advanced end connection and sealing technologies. The products have better performance of contamination flashover resistance and ageing resistance.

After taking the special treatment on vapor silica surface-active Si－OH Group, the technical properties of the compound have been improved. As the different technical requirements of sheds and housing asked, the compounding helps to improve the tracking resistance properties of the housing but also to ensure the tear strength of the sheds. End-fitted Metallic Hardware adopts the Full-Automated Sonic Detection System which reflects and records the real-time pressing and connecting stresses between metallic hardware and mandrel bar in effectively preventing the phenomena of under-voltage and over-voltage. The adoption of the design of internal high-temperature silicone rubber sealing ring and the use of the sealing techniques like external pressure sealing and multi-sealing grooves etc. has ensured mandrel bar preventing from the aerial erosion.

In recent years, the company has cooperated with Chongqing University, after taking experiments of AD-DC Discharge tests in the coexisting condition of various configuration, icing, contamination, and high altitude, it has successfully designed new structure arrangement of sheds and ribs which gained the praises from the experts of State Grid Co. of China. Cooperated with Xi’an Jiaotong University, the company adopts the unique semiconductor compounds by improving the condition of UHA Composite Insulators ending Field Strength, and the field strength can decreased by 30%.

The quality is our dignity, the brand is our proud. Carrying out its guiding principle of “Science & Technology advantage, quality-wins strategy, honesty and efficiency, pursue of excellence”, Xiangfan Guowang Corporation tries best to develop its first-class production line and makes itself as the first-class enterprise.

The company has applied with the worksite management examination methods by the advanced video monitoring system providing with omni-directional monitoring on the production and testing procedures. With the combination of ISO14001 Environment Management System and OHSAS18001 Occupational Health & Safety Management System, the production has not only guaranteed under the control to ensure the quality of the products, but also accords with the international criterion of the energy conservation, consumption reduction, discharge reduction and employee health care.

In order to ensure the procedure quality and the production efficiency, the company carries out strict employment system to all the staff that can only finish their training course and pass exams to be the formal employee.

In the term of quality control, the company rigorously acts in accordance with the ISO9001:2000 International Quality Management System to ensure Zero-Defect Quality. From inputting the order, raw material purchasing, production, quality test to the sales and service, each procedure strictly executes to the state, industrial and enterprise standards. Each product must take 8 tests: raw material check, compound detection, semi-finished product inspection, tensile test, high-pressure test and finished product examination etc. and it should pass all the tests to meet the standard. The whole testing procedure includes self-check, recheck of the procedure up and down and special test of testing department etc. With the sole code of the product, the producing and checking procedures can be looked up. The staff of Xiangfan Guowang has aware of the importance of the Grid safety. With the conscience of responsibility, the staff encourage themselves by making qualified products to maintain the safety of the world Grid. Recently, Xiangfan Guowang Co. has carried out all-round ERP( Enterprise Resource Plan)System which not only ameliorates resource deployment of the enterprise and improves the working efficiency, but also makes the real-time records to the raw material, semi-finished and finished products on the procedures of production and detection which makes the quality control convenient.

After 13-year of successful implement of ISO9001 Quality Management System, the company has taken part in renewing verification and annual suspect ion for several times and was assessed by the authorities as “the quality management system example of manufacturing industry” which has obtained the praises of the experts of quality management and electric power equipments in Oman, India and Iran etc.

Besides its own strict tests, Tongli composite insulator has first passed the aging resistance test of Holland Laboratory KEMA under the simulated condition of 5000 hours of running voltage, the type test of the Canadian Laboratory Powertech and the type test of Italian Laboratory CESI. All the products will be tested and assessed by the authorities like State Grid HV Institute of Wuhan and Electric Power Science Institute of China etc.

With the vision of prospect and cheering ambition, Xiangfan Guowang is going forwards to achieve the great expectation of being the best top of global insulator brand-maker.

2008-10-18