March. 14, 2026
Reading volume: 957
Industries that handle aggressive chemicals require valve materials that can resist corrosion while maintaining reliable sealing performance. Alloy 20 is widely used in chemical processing systems due to its strong resistance to sulfuric acid and other corrosive media. In particular, ball valves made from Alloy 20 are commonly installed in pipelines where tight shut-off, chemical compatibility, and long service life are required.
China has become a major manufacturing base for special alloy valves. Many companies supply Alloy 20 valves for applications in chemical plants, acid production units, and petrochemical facilities.
Below are five Alloy 20 valve manufacturers in China known for their manufacturing capabilities, engineering experience, and international market presence.
Yoonad Valve is a Chinese manufacturer specializing in high-performance special metal valves. With more than a decade of experience in valve engineering and ball valve manufacturing, the company focuses on supplying valves designed for demanding industrial environments.
The company produces valves made from a wide range of advanced materials, including:
These materials are selected to withstand corrosive media such as sulfuric acid, organic acids, and chloride-containing environments.
Yoonad’s product portfolio includes:
Their valves are widely used in chemical processing plants, oil and gas platforms, power stations, water systems, and heating networks.
Around 80% of Yoonad Valve products are exported to markets such as Europe, North America, the Middle East, and Southeast Asia. The company operates under a structured quality management system to maintain stable manufacturing standards and traceable material control.
In addition to standard valve products, Yoonad provides customized valve solutions for specific operating conditions where corrosion resistance and material selection are important.
Neway Valve is one of the largest industrial valve manufacturers in China and operates an advanced production facility in Suzhou. The company supplies a comprehensive range of industrial valves used across multiple sectors.
Its product lineup includes:
Neway valves are widely used in oil and gas, offshore engineering, chemical plants, power generation, nuclear facilities, mining, and air separation systems.
The company maintains an integrated quality control system with full traceability throughout manufacturing and inspection processes. Over the years, Neway has established long-term cooperation with major EPC contractors and industrial operators worldwide.
For corrosive environments such as sulfuric acid processing units, Neway provides valves manufactured from special alloys, including Alloy 20, duplex stainless steel, and nickel-based materials.
Founded in 1989, Weidouli Valves focuses on the production of high-alloy industrial valves. The company occupies a manufacturing facility covering 43,500 square meters and has been engaged in customized valve manufacturing for more than 30 years.
Weidouli works closely with clients from different industries to design valves suited to specific operating conditions. Their experience with high-alloy materials allows them to manufacture valves that perform well in aggressive chemical environments.
Common materials used by Weidouli include:
These materials are often selected for chemical plants and acid handling systems where corrosion resistance is required, particularly in sulfuric acid processing lines.
Weidouli manufactures several types of industrial valves, including ball valves, control valves, and special alloy valves designed for chemical processing.
SUFA Technology Industry, originally established in 1952 as Suzhou Iron Factory (later Suzhou Valve Factory), is a major Chinese industrial valve manufacturer. The company integrates research, design, manufacturing, and sales of industrial valve products.
SUFA was listed on the Shenzhen Stock Exchange in 1997 and is associated with China National Nuclear Corporation. The company has developed a complete range of industrial valves used in sectors such as:
The company produces many types of valves, including ball valves, gate valves, globe valves, and check valves. Its manufacturing capabilities cover high-performance valves designed for complex operating environments.
SUFA has obtained a number of certifications, including API 6D, ISO quality management certification, and CE certification for the European market. The company also holds multiple classification society approvals such as ABS, BV, DNV, and CCS.
Through continuous product development and engineering research, SUFA has introduced a number of key valve technologies for industrial applications.
Jiangsu Shentong Valve (STV) is a large Chinese industrial valve manufacturer located in Qidong City, Jiangsu Province, near Shanghai. The company specializes in research, manufacturing, and sales of industrial valves.
Its product line includes more than 2,000 specifications across seven major categories:
These valves are widely used in metallurgy, nuclear power, thermal power generation, petrochemical plants, coal chemical industries, natural gas transportation, shipbuilding, and offshore engineering.
Shentong Valve has been listed on the Shenzhen Stock Exchange since 2010. The company has obtained certifications including API, ISO 9001, ISO 14001, and CNAS accreditation.
In demanding applications such as chemical processing systems handling corrosive fluids, the company supplies valves manufactured from corrosion-resistant materials such as stainless steel, special alloys, and Alloy 20.
Alloy 20 is a nickel-iron-chromium alloy that also contains copper and molybdenum. It was originally developed for improved corrosion resistance in sulfuric acid environments.
Key characteristics include:
Because of these properties, Alloy 20 ball valves are frequently used in:
An Alloy 20 valve is a valve manufactured from Alloy 20 material, a corrosion-resistant nickel-based alloy designed for chemical processing environments. It is often used where sulfuric acid and other aggressive chemicals are present.
Ball valves provide tight shut-off and reliable sealing. When produced from Alloy 20, they can withstand corrosive media such as sulfuric acid while maintaining long service life in chemical pipelines.
Yes. Alloy 20 was developed specifically to resist sulfuric acid corrosion, particularly in concentrations commonly found in industrial processing systems.
Industries that frequently use Alloy 20 valves include:
Yes. Many Chinese valve manufacturers produce Alloy 20 valves for international markets. These valves are widely exported to Europe, North America, the Middle East, and Southeast Asia for use in chemical and petrochemical facilities.
