From November 26th to November 27th, 2019, the 14th China Urban Water Development International Symposium and New Technology Equipment Expo, which attracted much attention in the industry, officially kicked off at the Suzhou International Expo Center.
On June 15-16, 2019, a seminar on "Technical Guide for Water Supply Pipeline Network Maintenance, Rush Repair and Application of Equipment Materials" was successfully held by the Pipeline Department of China Urban Water Supply and Drainage Commission and Anhui Fangxing Industrial Co., Ltd. Anhui Fangxing Industrial Co., Ltd. was the organizer of the meeting and attended the meeting.
With the development of China's coal chemical industry and natural gas liquefaction industry, the localization of key equipment required is gradually deepening. Although the 100,000 cubic meter air separation unit was successfully used in Shenhua Ning Coal, a large number of large-scale air separation units and LNG supporting cryogenic pump valve products have been imported for a long time. To this end, the China General Machinery Industry Association held a seminar in Beijing on November 17, inviting relevant leaders and experts of Hangzhou Oxygen Group and Sichuan Air Separation Group to introduce the market of air separation units and natural gas liquefaction units for pump valves. Requirements and technical requirements, and discuss with the technical leaders of the pump and valve companies present at the meeting.
Valves are created with the creation of fluid lines. Valves have been used by humans for nearly 4,000 years. In ancient China, when plugging brine from salt wells to make salt, wooden plug valves were used in bamboo pipes. In 1800 BC, when the ancient Egyptians built large-scale water conservancy to prevent the Nile flooding, they also used similar wooden cocks to control the flow of water. These are the prototypes of valves. The large number of applications of industrial valves began after Watt invented the steam engine. At the beginning of the 20th century, valves of various materials such as cast iron, cast steel, forged steel, stainless steel, chrome molybdenum steel, and brass appeared. Used in various industries and various working conditions. There were not many domestic companies that introduced foreign valve production technology, and later introduced foreign production technology, which made a breakthrough in domestic valve production technology, improved quality, and longer life.
At present, domestic and foreign valve market competition is fierce, especially in the domestic market. The competition between state-owned enterprises, township and village enterprises, and private individual enterprises, coupled with their relatively weak purchasing power, has caused some valve companies to face a crisis of survival. Some opportunities in the market have also led domestic companies to strive for survival in order to survive. Taking advantage of the United States ’opportunities for sanctions on Iraq and Iran in the Middle East and the favorable export situation, China ’s higher-quality and cheaper valve products can easily enter the Middle East market and export to developed countries. Therefore, all valve enterprises should seize the opportunity to expand the market and increase exports for the development of domestic and foreign valve market needs.
The valve is a control component in the pipeline fluid delivery system, and has functions such as cut-off, adjustment, throttling, check, diversion, voltage stabilization, shunting, or overflow and pressure relief. Valves can be divided into water supply and drainage valves, desalination valves, flue gas desulfurization valves, oil and gas valves, nuclear power valves, etc. according to the application field. According to statistics from China Machinery Industry Association. Water supply and drainage valve is a special valve used to control the flow and water level. From a global perspective, the amount of water supply and drainage valve accounts for 11.4% of the total valve usage, which is one of the important segments of the valve industry.