在工业生产和日常生活的复杂管网系统中，阀门作为控制流体流动的关键部件，发挥着至关重要的作用。而良工阀门，凭借其悠久的历史传承、卓越的产品品质以及持续的创新精神，在阀门制造领域熠熠生辉，成为行业内备受瞩目的品牌。​

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. ​

源远流长的品牌发展历程​

The long-standing brand development history

良工阀门的故事可以追溯到上个世纪中叶。1946 年，上海良工阀门厂的前身 —— 良工机器厂正式创立，初始资本虽仅有五百万元法币，却怀揣着在工业制造领域闯出一片天地的宏伟志向。创业初期，企业以制造圆网造纸机起步，展现出在机械制造方面的初步实力。随着时间的推移与技术的积累，1952 年，良工成功制造出 2"1500 磅级高压铸钢阀门，这一里程碑式的突破，标志着我国高压铸钢阀门自主制造时代的开启。此后，良工机器厂历经多次更名与改制，不断发展壮大。在社会主义建设初期，为吴泾化肥厂、大庆油田等重大项目设计制造了一系列高质量阀门，彰显了其在工业阀门供应领域的重要地位。​

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

改革开放以来，良工阀门更是踏上了高速发展的征程。1980 年，与美国时代探索公司合作，以 API 标准试制首批美阀，开启了阀门批量出口的新篇。随后，陆续获得美国石油协会 API6D 和 API591 证书、挪威船级社 ISO9001 国际认证、国家安全局颁发的核级阀门设计制造许可证等一系列重要资质，产品质量和国际认可度得到极大提升。2003 年，企业完成改制，成为上海良工阀门厂有限公司，进一步激发了发展活力，在市场竞争中不断拓展业务版图。​

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. ​

卓越不凡的产品特性​

Excellent and extraordinary product features

良工阀门以其出色的产品性能而闻名。在承载能力方面，无论是承受高压环境下的巨大压力，还是应对大口径管道中大量流体的冲击，良工阀门都能稳定运行。其阀体采用高强度的铸钢、合金钢或不锈钢等材料制造，经过精密的锻造和加工工艺，确保阀体结构坚固，能够承受恶劣工况下的各种应力。例如，在石油化工领域的高压管道系统中，良工的高压闸阀能够可靠地控制介质的流动，长时间保持密封性能，保障生产的安全与稳定。​

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. ​

阀门的密封性能堪称关键，良工阀门在这方面表现卓越。通过优化密封结构设计和选用优质的密封材料，如柔性石墨、不锈钢密封圈等，实现了良好的密封效果。以良工的三偏心密封蝶阀为例，独特的三偏心结构使得阀座与蝶板在关闭时几乎无磨损，且具有越关越紧的密封特性，无论是在低温深冷环境还是高温高压工况下，都能有效防止介质泄漏，确保系统的高效运行。​

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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This article is a friendly tribute from Lianggong Valve to everyone For more related knowledge, please click: We will wholeheartedly answer your questions