In the next 10 years, China will have more than 20,000 kilometers of oil pipelines to be built, including Russia, Kazakhstan and other transnational oil pipelines. In addition, following the West-to-East Gas Transmission, China will also build more than 20,000 kilometers of transnational gas pipelines and branch lines. These projects require more than 20,000 large-diameter line ball valves, small- and medium-diameter ball valves, and flat valves; 10 to 20 million-ton large-scale oil refineries will also be built, and a batch of 800,000 to 1 million-ton large-scale ethylene There are also more than a dozen large-scale PTA units of 500,000 to 600,000 tons / year approved and pending, which will provide a huge market for the valve industry; the construction of large-scale fertilizers and ammonia plants will also provide opportunities for the valve manufacturing industry. In addition, direct coal liquefaction is likely to form a new industry. Due to the high working temperature, high pressure, and high solid particle content of the direct coal liquefaction process media, high requirements for valves will form an emerging market.
Recently, we learned from the valve branch of China General Machinery Industry Association that in the next 10 years, new valve products for major projects such as thermal power, nuclear power, hydropower, large-scale petrochemicals, oil and gas pipelines, coal liquefaction, and metallurgy will be the focus of development. It is expected to lead the rapid growth of the entire valve market. To this end, the valve industry should form an enterprise group, increase investment in science and technology, develop high, large, precise, and sharp valve products; strengthen product standardization work, so that the standards in quantity and level keep up with the needs of the development of the situation.
According to experts from the association, when developing these new valve products, attention should be paid to the promotion and application of new process technologies. For example, the development of large-diameter integrated ball valves for long-distance pipelines should use integrated welding technology. In order to improve the corrosion resistance and erosion resistance of valve sealing surfaces, few Manufacturers have begun to use the supersonic flame spraying tungsten carbide process. At the same time, attention should be paid to the use of nano-scale materials to modify the sealing surface and the development of laser cladding technology. In addition, the cobalt-chromium-tungsten plasma wire surfacing automatic welding process that has been applied in the valve industry for many years should continue to be promoted to replace manual welding to ensure the quality of the valve sealing surface; in order to achieve automatic control of the engineering device process flow, intelligent electric, Development of hydraulic transmission valve; accelerate the development of new transmission methods such as magnetic transmission, develop a new series of closed magnetic transmission valve series, eliminate the leakage between the valve stem and the packing, making it suitable for flammable, explosive, toxic, Corrosive media and pipelines that require locking to avoid misoperation.