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ABOUT US
Shanghai quanhang Valve Manufacturing Co., Ltd. is located in Shanghai, the economic center of China. It is located in Jinshan District of Shanghai with convenient transportation. It is specialized in the production and sales of valves. It is a high-quality manufacturer of special valves in Shanghai. At present, it has built a large steel structure workshop and several advanced production lines, which can produce and supply hundreds of valve products, including special valves, ball valves, butterfly valves, valves, globe valves, control valves, balance valves, control valves, pneumatic and electric valves, safety valves and other products.
Shanghai quanhang Valve Manufacturing Co., Ltd. has been paying attention to product quality assurance, from the beginning of production to the factory, the whole process of quality monitoring, strict testing links...


NEWS CENTER
Liaoyang Petrochemical: Adapting to the Seasons to Ensure the Production of Low Pour Point Diesel
As temperatures in Northeast China continue to drop, the pressure to ensure a steady supply of low pour point diesel has been increasing. Liaoyang Petrochemical has closely followed market demand changes, adjusted resource allocation, and optimized production plans to significantly increase the output of low pour point diesel. As of now, the daily average output of -35 diesel at Liaoyang Petrochemical has reached 2,000 tons, effectively meeting market demands. Facing the winte
2025-11-14-

NEWS CENTER
The automatic pipe pusher device of the Downhole Operations Company of Dagang Oilfield reduces burden and empowers.
On November 3rd, at the well maintenance site of Well West 17-9 in the Downhole Operations Company of Dagang Oilfield, employees completed the operation tasks that previously required the cooperation of two positions by controlling the newly developed automatic pipe pusher device. Traditional minor well maintenance is a labor-intensive industry. On-site employees have been dealing with "iron blocks" such as hydraulic tongs, slips, and oil pipes for years, with high labor intens
2025-11-7-
Chemical industry
The chemical industry is a large polluter because of its various types, complex processes, and diverse products, and the types, quantities and toxicity of pollutants discharged during production.
Oil and gas
With the increasing demand for oil and gas products around the world and the depletion of oil and gas resources, the collection, transportation and processing technology and requirements of oil and gas products become increasingly complex, costly and face more and more personalized technical requirements
Pharmaceutical industry
Pharmaceutical industry is an important part of China's national economy. It is a combination of traditional industry and modern industry, and one, two and three industries are integrated.
Metallurgical Industry
The valve used in iron metallurgy industry has strict working condition, poor sealing performance of valve, wear problem in production engineering causes pipeline aging and valve damage, which needs frequent maintenance and treatment. Therefore, due to the problems of short service life and high maintenance frequency of valve, it causes long shutdown time
Water treatment industry
The basic situation of water treatment industry, water resources is an important resource for human survival and social development. With the rapid development of China's economy, urbanization and industrialization process
Electric power industry
Electric power is a kind of energy which is powered by electric energy.Invented in the 1870s, the invention and application of electricity set off the second wave of industrialization