閥門是石油、化工、電站、長輸管道、造船、核工業、各種低溫工程和海洋石油生產不可缺少的流體控制設備。經過多年的發展，我國閥門企業數量居世界前列，各類規模閥門企業6000多家，其中年產值500多萬元的閥門企業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.

　　在我國目前的閥門市場上，除了低壓閥門達到國際市場可接受的水平外，高壓閥門還需要進口。在宏觀經濟持續樂觀的情況下，閥門行業大多數企業的產銷指標保持了快速增長。然而，受金融的影響，該行業的銷售收入和利潤較去年同期大幅下降。隨著世界經濟的復蘇，我國閥門產品的進出口也有所增加。然而，好的技術與國外制造商相比仍有很大差距。未來，產品技術將成為制約我國閥門產品發展的瓶頸。

　　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.

　　在產品方面，我國閥門行業已能生產閘閥、截止閥、止回閥、球閥、安全閥、減壓閥、針閥、調節閥、隔膜閥、蝶閥、電磁閥、疏水閥、柱塞閥、旋塞閥、鍛鋼閥等十多類產品，針閥、儀表閥、液位計、流量計、排氣閥、阻火器、刀閘閥、泥漿閥、銅閥、平衡閥、不銹鋼閥、管夾閥、美標閥、電站閥、呼吸閥、液控閥、真空閥、，排放閥、氣動角座閥、保溫閥、過濾器、底閥、平衡閥、排污閥等，至高使用溫度570℃，至低使用溫度-196℃，至大壓力600MPa，至大直徑5350mm。此外，據有關部門統計，中國閥門市場年營業額高達500億元左右，其中100多億元的市場被國外閥門企業占據。

　　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，我國閥門行業還存在一些問題。例如，我國的閥門企業主要是低水平、小型和家庭作坊型企業。在產品方面，由于重復投資和技術引進不足，我國閥門企業的主要產品仍然是低質量的批量產品。目前，我國企業生產的各類閥門普遍存在外漏、內漏、外觀質量低、使用壽命短、操作不靈活、閥門電動和氣動裝置不可靠等缺點。有些產品僅相當于80年代初的國際水平，一些高溫、高壓和關鍵設備所需的閥門仍然依賴進口。此外，我國閥門行業在產業結構、閥門行業產業鏈等方面與國外企業存在較大差距。

　　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.

　　國內閥門產品質量不高的原因是：由于市場的快速擴張，原有的國有閥門企業紛紛關閉和改制。雖然一些鄉鎮企業發展迅速，但由于鄉鎮企業起點低、技術力量薄弱、設備簡單，大部分產品都是仿制生產，尤其是給排水低壓閥門。

　　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.

　　但上述問題并不影響我國閥門行業未來的廣闊前景。這主要是由于國家政策的支持和閥門產品市場的強勁需求。此外，中國正面臨工業化時代的到來。石化、電力、冶金、化工、城市建設等行業的大型閥門用戶將增加對閥門產品的需求燃煤發電機組大中型啟動項目所需閥門總量預測為：閥門總需求量15.3萬，年均需求量3.06萬;閥門總需求39.6億元，年均需求7.92億元，閥門產品的加工制作面臨更大的發展空間。

　　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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