Super Duplex Steel Flange

Dafugui super duplex steel flanges are mainly used in the chemical industry. They have strong pressure resistance and are connected by welding. Custom processing is supported. If you are interested in super duplex steel flanges or have specific needs, please feel free to contact us.

Product Advantages

1. Excellent mechanical properties: Super duplex steel flange has high strength and lightweight characteristics. The yield strength is more than twice that of ordinary austenitic stainless steel. It can reduce the thin wall thickness to reduce the weight of equipment, while maintaining sufficient plastic toughness to meet forming needs. Its fatigue resistance and wear resistance are outstanding. Its elongation rate is ≥25% under alternating load or particle-containing media environments, and the impact energy remains above 100J at-40℃, effectively improving the service life of the equipment.

2. Excellent corrosion resistance: Super duplex steel flange can effectively resist pitting, crevice corrosion and stress corrosion cracking in chloride ion-containing environments. In acidic environments and alkaline solutions such as acetic acid, formic acid, sulfuric acid, and hydrochloric acid, super duplex steel flange can effectively resist pitting, crevice corrosion cracking and is suitable for acid oil and gas field development and refining equipment.

3. Good processing and welding performance: Low sensitivity to welding hot cracks, and good corrosion resistance in the weld area, eliminating the need for complex heat treatment. Optimize structural stability by quenching + tempering to avoid staying in the sensitization zone, prevent the precipitation of σ phase and lead to a decrease in toughness. It also combines the high strength of ferrite and the toughness of austenite, and is suitable for forging, machining and complex structure forming, but attention should be paid to cutting. Tool selection and cooling conditions during machining.

4. Economy and long life: In the fields of ocean engineering, petrochemicals, electric power, papermaking, food processing, etc., super duplex steel flange replaces traditional materials to reduce equipment loss and improve system reliability. Long-term operation is cost-effective. At the same time, the service life of super duplex steel flange is 3-5 times that of ordinary stainless steel, which can reduce maintenance, replacement and labor costs, and has better overall economy.

5.Industry applicability and standard compliance: super duplex steel flange meets international/domestic standards and is suitable for use in high pressure, high temperature and corrosive environments.

Services Offered

Dafugui Pipe Valve Co., Ltd. provides comprehensive customer service, ensuring that every customer's needs are responded to promptly.

Pre-sales

Our sales team provides professional product consultation, technical support, and customized solutions to help customers choose the most suitable products.

During Sales

We provide end-to-end tracking to ensure that production progress, quality control, and delivery arrangements meet customer requirements.

After-sales

We provide long-term product maintenance and technical support to ensure the stable operation of customer equipment. In the event of any problems, we will quickly provide solutions to prevent production interruptions.