在工業生產和日常生活的復雜管網系統中，閥門作為控制流體流動的關鍵部件，發揮著至關重要的作用。而良工閥門，憑借其悠久的歷史傳承、卓越的產品品質以及持續的創新精神，在閥門制造領域熠熠生輝，成為行業內備受矚目的品牌。?

In the complex pipeline systems of industrial production and daily life, valves play a crucial role as key components in controlling fluid flow. Lianggong Valve, with its long history of inheritance, excellent product quality, and continuous innovation spirit, shines brightly in the field of valve manufacturing and has become a highly anticipated brand in the industry. ?

源遠流長的品牌發展歷程?

The long-standing brand development history

良工閥門的故事可以追溯到上個世紀中葉。1946 年，上海良工閥門廠的前身 —— 良工機器廠正式創立，初始資本雖僅有五百萬元法幣，卻懷揣著在工業制造領域闖出一片天地的宏偉志向。創業初期，企業以制造圓網造紙機起步，展現出在機械制造方面的初步實力。隨著時間的推移與技術的積累，1952 年，良工成功制造出 2"1500 磅級高壓鑄鋼閥門，這一里程碑式的突破，標志著我國高壓鑄鋼閥門自主制造時代的開啟。此后，良工機器廠歷經多次更名與改制，不斷發展壯大。在社會主義建設初期，為吳涇化肥廠、大慶油田等重大項目設計制造了一系列高質量閥門，彰顯了其在工業閥門供應領域的重要地位。?

The story of Lianggong Valve can be traced back to the mid-20th century. In 1946, the predecessor of Shanghai Lianggong Valve Factory, Lianggong Machinery Factory, was officially established. Although the initial capital was only five million RMB, it had a grand ambition to make a name for itself in the field of industrial manufacturing. In the early stages of entrepreneurship, the enterprise started by manufacturing circular mesh paper machines, demonstrating its initial strength in mechanical manufacturing. With the passage of time and the accumulation of technology, in 1952, Lianggong successfully manufactured 2 "1500 pound high-pressure cast steel valves. This milestone breakthrough marked the beginning of the era of independent manufacturing of high-pressure cast steel valves in China. Since then, Lianggong Machinery Factory has undergone multiple name changes and restructuring, continuously developing and growing. In the early stage of socialist construction, it designed and manufactured a series of high-quality valves for major projects such as Wujing Fertilizer Plant and Daqing Oilfield, demonstrating its important position in the field of industrial valve supply

改革開放以來，良工閥門更是踏上了高速發展的征程。1980 年，與美國時代探索公司合作，以 API 標準試制首批美閥，開啟了閥門批量出口的新篇。隨后，陸續獲得美國石油協會 API6D 和 API591 證書、挪威船級社 ISO9001 國際認證、國家安全局頒發的核級閥門設計制造許可證等一系列重要資質，產品質量和國際認可度得到極大提升。2003 年，企業完成改制，成為上海良工閥門廠有限公司，進一步激發了發展活力，在市場競爭中不斷拓展業務版圖。?

Since the reform and opening up, Lianggong Valve has embarked on a journey of rapid development. In 1980, we collaborated with Time Exploration Corporation in the United States to trial produce the first batch of American valves according to API standards, opening a new chapter in the mass export of valves. Subsequently, a series of important qualifications were obtained, including the American Petroleum Institute's API6D and API591 certificates, the Norwegian Classification Society's ISO9001 international certification, and the National Safety Agency's nuclear grade valve design and manufacturing license. The product quality and international recognition were greatly improved. In 2003, the company completed its restructuring and became Shanghai Lianggong Valve Factory Co., Ltd., further stimulating its development vitality and continuously expanding its business scope in market competition. ?

卓越不凡的產品特性?

Excellent and extraordinary product features

良工閥門以其出色的產品性能而聞名。在承載能力方面，無論是承受高壓環境下的巨大壓力，還是應對大口徑管道中大量流體的沖擊，良工閥門都能穩定運行。其閥體采用高強度的鑄鋼、合金鋼或不銹鋼等材料制造，經過精密的鍛造和加工工藝，確保閥體結構堅固，能夠承受惡劣工況下的各種應力。例如，在石油化工領域的高壓管道系統中，良工的高壓閘閥能夠可靠地控制介質的流動，長時間保持密封性能，保障生產的安全與穩定。?

Lianggong Valve is renowned for its outstanding product performance. In terms of bearing capacity, Lianggong valves can operate stably, whether it is withstanding enormous pressure in high-pressure environments or dealing with the impact of large amounts of fluid in large-diameter pipelines. The valve body is made of high-strength cast steel, alloy steel or stainless steel materials, and undergoes precise forging and processing technology to ensure that the valve body structure is sturdy and can withstand various stresses under harsh working conditions. For example, in the high-pressure pipeline system of the petrochemical industry, Lianggong's high-pressure gate valve can reliably control the flow of the medium, maintain sealing performance for a long time, and ensure the safety and stability of production. ?

閥門的密封性能堪稱關鍵，良工閥門在這方面表現卓越。通過優化密封結構設計和選用優質的密封材料，如柔性石墨、不銹鋼密封圈等，實現了良好的密封效果。以良工的三偏心密封蝶閥為例，獨特的三偏心結構使得閥座與蝶板在關閉時幾乎無磨損，且具有越關越緊的密封特性，無論是在低溫深冷環境還是高溫高壓工況下，都能有效防止介質泄漏，確保系統的高效運行。?

The sealing performance of the valve is crucial, and Lianggong Valve excels in this regard. By optimizing the sealing structure design and selecting high-quality sealing materials such as flexible graphite and stainless steel sealing rings, a good sealing effect has been achieved. Taking Lianggong's three eccentric sealed butterfly valve as an example, the unique three eccentric structure makes the valve seat and butterfly plate almost wear free when closed, and has a tighter sealing characteristic as it is closed. Whether in low-temperature cryogenic environments or high-temperature and high-pressure conditions, it can effectively prevent medium leakage and ensure the efficient operation of the system. ?

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