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Pump Housing

Duplex Stainless Steel (DSS) is widely used in pump body manufacturing due to its excellent mechanical properties and outstanding corrosion resistance, particularly in demanding applications such as chemical, petroleum, marine engineering, and seawater desalination.

Description

Excellent corrosion resistance:

Pitting and crevice corrosion resistance: With high chromium (Cr), molybdenum (Mo), and nitrogen (N) content, it exhibits excellent corrosion resistance equivalent (PREN) and performs outstandingly in chloride-containing environments (such as seawater and brine).


Resistance to stress corrosion cracking (SCC): Austenitic stainless steel is prone to stress corrosion in high-temperature and chlorine-containing environments, while duplex stainless steel exhibits exceptional resistance to SCC.


Wear and Erosion Resistance: With higher hardness, it exhibits superior resistance to erosion and corrosion in media containing sediment compared to conventional stainless steel.


Common dual-phase steel grades

In pump body manufacturing, commonly used grades include:

2205 (S32205 / F51): The most commonly used grade, offering a balance between cost-effectiveness and performance, suitable for most moderate corrosion environments.


2507 (S32750 / F53 / Super Duplex Steel): 

Contains higher levels of chromium, molybdenum, and nitrogen, specifically designed for extremely corrosive environments (such as high-temperature seawater and strong acids).


Zeron 100 (S32760 / F55): Enhanced with tungsten (W) and copper (Cu) for superior performance in chemical media such as sulfuric acid.

Application fieldDesalination: High-pressure pumps, circulation pumps (for treating high-concentration brine).


Petroleum and Natural Gas:Subsea platform injection pumps and transfer pumps (designed to withstand corrosion from sulfur-containing oil and gas as well as seawater).

Chemical Industry: Conveying media containing chlorides, strong acids, and strong alkalis.

Power Industry: FGD Pumps in Power Plants, Handling Corrosive Slurry.


Faq

Do you provide customized industrial pump solutions?

Yes, we specialize in customized industrial pump solutions tailored to customer requirements. We can customize pump size, material, flow rate, pressure capacity, and sealing systems according to different applications. Our experienced engineering team works closely with clients to ensure every solution delivers reliable performance, improved efficiency, and long service life in real operating conditions.

How do you ensure product quality?

Quality is one of our core priorities. We implement strict quality control throughout the entire production process, from raw material inspection to final product testing. Every pump undergoes performance testing and inspection before delivery to ensure stable operation, durability, and compliance with international quality standards. Our goal is to provide customers with reliable and long-lasting industrial pump products.

What materials are available for your pumps?

We offer pumps in a variety of materials to meet different industrial requirements. Common options include stainless steel, cast iron, duplex steel, bronze, and corrosion-resistant alloys. Material selection depends on factors such as liquid type, temperature, pressure, and environmental conditions. Our technical team can recommend the most suitable material for your specific application.

Can you support OEM and ODM projects?

Yes, we provide both OEM and ODM services for global customers. We can manufacture pumps according to customer drawings, samples, or technical specifications. In addition, our design and engineering team can assist with product development, branding, and customized packaging solutions. We are committed to helping clients build competitive and reliable pump products for their markets.

What is your typical production and delivery time?

Production time depends on product type, order quantity, and customization requirements. Standard industrial pumps usually have shorter lead times, while customized solutions may require additional engineering and testing time. We always maintain efficient production management to ensure timely delivery and stable supply for our customers worldwide.

Do you provide technical support after sales?

Yes, we offer professional after-sales technical support for all customers. Our team can assist with product installation, operation guidance, maintenance recommendations, and troubleshooting. We are committed to building long-term partnerships by providing fast responses, reliable service, and continuous technical support to help customers maintain efficient and stable pump system performance.

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