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Are you looking to wholesale high-performance Duplex stainless steel forged flanges from a verified China suppliers catalog? Wenzhou Longan Flange Co., Ltd. produces these components to resolve premature stress-corrosion fatigue in municipal wastewater treatment plants and desalination loops. Our forging process delivers high mechanical performance to handle sudden pressure spikes without structural deformation.
Piping engineers often face a tough choice between high tensile strength and chemical corrosion resistance. Standard austenitic grades can fail rapidly when exposed to high-stress chloride environments.
This Duplex stainless steel forged flanges offers a balanced dual-phase grain structure that combines high yield strength with protection against pitting. It solves the issue of premature stress-corrosion fatigue, allowing industrial operations to use thinner flange walls and reduce overall pipeline weight.
Engineers managing marine environments or industrial brine lines often find that traditional austenitic steels suffer from rapid pitting and stress corrosion cracking when under mechanical tension. This leads to unexpected pipeline shutdowns and high maintenance costs.
This component solves this issue by combining the best properties of both ferrite and austenite grains. This microstructural configuration acts as a physical barrier that stops micro-cracks from propagating through the metal under pressure. Consequently, systems can utilize thinner wall thicknesses, reducing total structural weight while retaining high pressure ratings.
• Material Density Rating: 7.93 g/cm³
• Thermal Energy Conduction: 16.2 W/m·℃
• Melting Temperature Range: 1398 - 1420 ℃
• Coefficient of Thermal Expansion: 17.2 × 10⁻⁶/℃
• Minimum Tensile Strength Capability: ≥ 485 MPa
• Minimum Yield Strength Capability: ≥ 170 MPa
• Ductility Elongation Rating: ≥ 40%
• Maximum Brinell Hardness Value: ≤ 187 HB
• Maximum Continuous Service Temperature: 870°C (1600°F)
Engineering Note: Compared to basic 304 grades, this Duplex stainless steel forged flanges provides a 30% boost in intergranular corrosion protection. Furthermore, it delivers a 20% to 30% cost savings over thicker, specialized high-nickel alloys while maintaining high mechanical yield performance (≥ 170 MPa) for heavy industrial pipeline configurations.
• Desalination Infrastructure: High-pressure seawater intake pipelines and brine processing filtration loops.
• Petrochemical Facilities: Acidic gas processing towers, hydrocarbon processing lines, and chemical scrubbing systems.
• Marine Transport: Cargo piping systems on chemical tankers and offshore oil production platform topsides.
Our Duplex stainless steel forged flanges utilizes a fully connected online ERP network to track the material profile of each component from raw steel billet to finished machining. We conduct hydrostatic pressure trials, dye penetrant tests, and Brinell hardness testing (≤ 187 HB) to guarantee total reliability before any shipment leaves our floor.
All machined surfaces receive a thick layer of anti-corrosion oil. Small, lightweight components are packed into multi-walled cardboard boxes, while larger, high-pressure items are secured in reinforced wooden crates with internal padding to prevent face damage.
The mixed ferrite and austenite grain structure hinders the propagation of stress corrosion cracks. This makes the component significantly more resilient than standard austenitic steels in environments exposed to salt or brackish water.
The dual-phase grain structure naturally resists mechanical deformation. Combined with our high-density forging process, it achieves a certified yield strength of ≥ 170 MPa and a tensile strength of ≥ 485 MPa.
While they perform reliably up to 870°C, the ferrite phase can become brittle at deep sub-zero temperatures. For continuous cryogenic applications, dedicated low-temperature pressure vessel materials are recommended.
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NO. 620, MINGZHU ROAD, YONGXING STREET, LONGWAN DISTRICT, WENZHOU CITY, ZHEJIANG PROVINCE, CHINA.
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