Duplex steel high pressure threaded flange

Minimize your structural footprint by sourcing from Longan Flange, a premium China Duplex steel high pressure threaded flange supplier. This specialized component provides exceptional pitting resistance for marine infrastructure and petrochemical pipelines. It eliminates the slow assembly times of traditional weld flanges, reducing overall installation time by up to 80%.

Core Advantages Over Standard Austenitic Flanges

Standard stainless steel grades often suffer from pitting and stress corrosion cracking when exposed to hot chloride solutions or coastal marine atmospheres. Our Duplex steel high pressure threaded flange provide double the yield strength of standard 316L, allowing the flange to handle severe mechanical loads without deformation.

• Time-Saving Installation: Threaded connection saves installation time and supports non-destructive disassembly, which can save 80% of installation time in frequent maintenance and emergency repair scenarios.

• Supply Security: Our structured stock ensures your procurement cycle is 50-70% faster than customized special-shaped parts, preventing project delays.

Technical Dimensions and Standard Compliance

This Duplex steel high pressure threaded flange bridges the gap between high mechanical load requirements and tight spatial restrictions.

• Dimensional Standards

• ASME B16.5: Class 150 to Class 2500 (PN 20 to PN 420)

• EN 1092-1: Suitable for European standard pipeline configurations

• JIS B2220: Full matching capabilities for Japanese industrial infrastructure

• Performance Capabilities

￮ Pressure Capacity: Handles ultra-high pressures up to 299 bar

￮ Temperature Limits: Maintains structural stability from -196°C to +700°C

￮ Traceability: Dispatched with complete EN 10204 3.1 / 3.2 or ASTM A961/A105 documentation

Comparison With Competitors: Why Longan Flange?

Many workshops machine duplex flanges from cheap bar stock or poor-quality castings, which can lead to premature failure under high pressure. Longan Flange uses an advanced online ERP system, providing complete network coverage in the workshop for paperless, data-tracked forging production. Every single Duplex steel high pressure threaded flange is forged using precise thermodynamic controls, ensuring perfect grain flow and absolute compliance with ASTM A961/A105 and EN 10204 3.1/3.2.

How does this component lower overall project costs?

Welding duplex alloys requires precise heat inputs to maintain the 50/50 austenite-ferrite balance. Our Duplex steel high pressure threaded flange completely avoids this risk. Operators simply tighten the connection to the preset torque, preventing thermal unbalance and metallurgical defects.

Inventory Advantage: Our comprehensive warehousing means procurement cycles for these standard configurations are 50-70% faster than ordering custom-machined parts.

Secure Packaging

We prioritize thread protection. Light fittings are boxed in heavy cardboard, while large-diameter components are secured within industrial wooden crates to prevent movement during transport.

Quality Control and Measurement Logging

Before dispatch, our quality team records and files the physical measurements of every batch:

• Aperture & Thickness: Verified using digital coordinate equipment to match standard requirements precisely.

• Sealing Face Roughness: Measured to ensure optimal gasket seating and compression.

• Phase Balance Verification: Verified via non-destructive ferrite scope testing on the forged body.

Application FAQ

Why is a threaded connection preferred over welding for duplex steel?

Welding duplex steel requires tight control over cooling rates to prevent brittle phases from forming. A Duplex steel high pressure threaded flange removes this operational variable entirely, ensuring the base material retains its full mechanical properties.

Does the thread connection wear out after frequent disassembly?

Our precision-machined threads and reinforced neck anti-deformation design support 3-5 times of reuse. As long as you clean the threads and use appropriate anti-seize lubricants, the sealing integrity will remain fully intact.

What type of material test report is delivered with these parts?

Each batch comes with a detailed EN 10204 3.1 or 3.2 material report (MTC/MTR), which includes actual chemical breakdowns, mechanical tensile tests, and impact test data.