阀门是石油、化工、电站、长输管道、造船、核工业、各种低温工程和海洋石油生产不可缺少的流体控制设备。经过多年的发展，我国阀门企业数量居世界前列，各类规模阀门企业6000多家，其中年产值500多万元的阀门企业900多家。

　　Valves are essential fluid control equipment in petroleum, chemical, power plant, long-distance pipeline, shipbuilding, nuclear industry, various low-temperature engineering, and offshore oil production. After years of development, the number of valve enterprises in China ranks among the top in the world, with over 6000 valve enterprises of various scales, including more than 900 valve enterprises with an annual output value of over 5 million yuan.

　　在我国目前的阀门市场上，除了低压阀门达到国际市场可接受的水平外，高压阀门还需要进口。在宏观经济持续乐观的情况下，阀门行业大多数企业的产销指标保持了快速增长。然而，受金融的影响，该行业的销售收入和利润较去年同期大幅下降。随着世界经济的复苏，我国阀门产品的进出口也有所增加。然而，好的技术与国外制造商相比仍有很大差距。未来，产品技术将成为制约我国阀门产品发展的瓶颈。

　　In the current valve market in our country, in addition to low-pressure valves reaching an acceptable level in the international market, high-pressure valves also need to be imported. In the context of sustained macroeconomic optimism, the production and sales indicators of most enterprises in the valve industry have maintained rapid growth. However, due to the impact of finance, the sales revenue and profits of this industry have significantly decreased compared to the same period last year. With the recovery of the world economy, the import and export of valve products in China have also increased. However, there is still a significant gap between good technology and foreign manufacturers. In the future, product technology will become a bottleneck restricting the development of valve products in China.

　　在产品方面，我国阀门行业已能生产闸阀、截止阀、止回阀、球阀、阀、减压阀、针阀、调节阀、隔膜阀、蝶阀、电磁阀、疏水阀、柱塞阀、旋塞阀、锻钢阀等十多类产品，针阀、仪表阀、液位计、流量计、排气阀、阻火器、刀闸阀、泥浆阀、铜阀、平衡阀、不锈钢阀、管夹阀、美标阀、电站阀、呼吸阀、液控阀、真空阀、，排放阀、气动角座阀、保温阀、过滤器、底阀、平衡阀、排污阀等，高使用温度570℃，低使用温度-196℃，大压力600MPa，大直径5350mm。此外，据有关部门统计，阀门市场年营业额高达500亿元左右，其中100多亿元的市场被国外阀门企业占据。

　　In terms of products, China's valve industry has been able to produce more than ten types of products, including gate valves, globe valves, check valves, ball valves, safety valves, pressure reducing valves, needle valves, regulating valves, diaphragm valves, butterfly valves, solenoid valves, drain valves, plunger valves, plug valves, forged steel valves, etc. Needle valves, instrument valves, level gauges, flow meters, exhaust valves, flame arresters, knife gate valves, mud valves, copper valves, balance valves, stainless steel valves, pipe clamp valves, American standard valves, power station valves, breathing valves, liquid control valves, vacuum valves, discharge valves, pneumatic angle seat valves, insulation valves, filters, bottom valves, balance valves, sewage valves, etc., with a maximum operating temperature of 570 ℃ and a minimum operating temperature of -196 ℃. High pressure of 600MPa, up to a diameter of 5350mm. In addition, according to relevant departments' statistics, the annual turnover of China's valve market is as high as about 50 billion yuan, of which more than 10 billion yuan of the market is occupied by foreign valve enterprises.

　　目前，我国阀门行业还存在一些问题。例如，我国的阀门企业主要是低水平、小型和家庭作坊型企业。在产品方面，由于重复投资和技术引进不足，我国阀门企业的主要产品仍然是低质量的批量产品。目前，我国企业生产的各类阀门普遍存在外漏、内漏、外观质量低、使用寿命短、操作不灵活、阀门电动和气动装置不可靠等缺点。有些产品仅相当于80年代初的国际水平，一些高温、高压和关键设备所需的阀门仍然依赖进口。此外，我国阀门行业在产业结构、阀门行业产业链等方面与国外企业存在较大差距。

　　At present, there are still some problems in China's valve industry. For example, valve enterprises in China are mainly low-level, small-scale, and family workshop enterprises. In terms of products, due to repeated investment and insufficient technology introduction, the main products of valve enterprises in China are still low-quality bulk products. At present, various types of valves produced by Chinese enterprises generally have disadvantages such as external leakage, internal leakage, low appearance quality, short service life, inflexible operation, and unreliable valve electric and pneumatic devices. Some products are only equivalent to the international level of the early 1980s, and some valves required for high temperature, high pressure, and critical equipment still rely on imports. In addition, there is a significant gap between China's valve industry and foreign enterprises in terms of industrial structure and valve industry chain.

　　国内阀门产品质量不高的原因是：由于市场的快速扩张，原有的国有阀门企业纷纷关闭和改制。虽然一些乡镇企业发展迅速，但由于乡镇企业起点低、技术力量薄弱、设备简单，大部分产品都是仿制生产，尤其是给排水低压阀门。

　　The reason for the low quality of domestic valve products is that due to the rapid expansion of the market, existing state-owned valve enterprises have closed and restructured one after another. Although some township enterprises have developed rapidly, due to their low starting point, weak technical strength, and simple equipment, most products are produced through imitation, especially low-pressure valves for water supply and drainage.

　　但上述问题并不影响我国阀门行业未来的广阔前景。这主要是由于政策的支持和阀门产品市场的强劲需求。此外，正面临工业化时代的到来。石化、电力、冶金、化工、城市建设等行业的大型阀门用户将增加对阀门产品的需求燃煤发电机组大中型启动项目所需阀门总量预测为：阀门总需求量15.3万，年均需求量3.06万;阀门总需求39.6亿元，年均需求7.92亿元，阀门产品的加工制作面临更大的发展空间。

　　But the above issues do not affect the broad prospects of China's valve industry in the future. This is mainly due to the support of national policies and strong demand in the valve product market. In addition, China is facing the arrival of the industrialization era. Large valve users in industries such as petrochemicals, electricity, metallurgy, chemical engineering, and urban construction will increase their demand for valve products. The total number of valves required for large and medium-sized start-up projects of coal-fired power generation units is predicted to be 153000, with an average annual demand of 30600; The total demand for valves is 3.96 billion yuan, with an average annual demand of 792 million yuan. The processing and manufacturing of valve products face greater development space.

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