What Are High-Pressure Vessel Flanges? A Guide by Stainless Steel Flange and Pipe Fittings manufacturers

What Are High-Pressure Vessel Flanges? A Guide by Stainless Steel Flange and Pipe Fittings manufacturers

Main Description: Discover the critical role of high-pressure vessel flanges in industrial systems and why stainless steel flanges outperform alternatives. Learn about ASME standards and material benefits.

As a leading stainless steel flange and Pipe Fittings manufacturer, we specialize in producing high-pressure vessel flanges for demanding industrial applications. This guide explains their design, materials, and advantages to help you select reliable solutions.

What Are High-Pressure Vessel Flanges?

High-pressure vessel flanges (HPVF) connect piping systems to reactors, boilers, and storage tanks in extreme conditions. Key features:

Pressure Ratings: Class 300 to Class 2500 (ASME B16.5/B16.47)

Temperature Range: -196°C to +700°C (stainless steel grades)

Sealing Types: Ring-Type Joint (RTJ), Raised Face (RF), or Flat Face (FF)

Why Choose Stainless Steel for HPVF?

Superior Corrosion Resistance

316L/904L stainless steel resists chlorides, acids, and H₂S (NACE MR0175 compliant).

PREN >40 for critical environments like offshore platforms.

Mechanical Strength

Yield strength up to 550 MPa (Duplex 2205), reducing flange thickness by 30% vs. carbon steel.

Leak Prevention

CNC-machined sealing surfaces (Ra ≤3.2μm) ensure zero-leak performance under 10,000 psi.

ASME Standards & Certifications

Our HPVF comply with:

ASME Section VIII Div.1: Pressure vessel safety requirements

PED 2014/68/EU: EU compliance for explosive atmospheres

ISO 9001:2025 Quality Management

Applications of Stainless Steel HPVF

Oil & Gas: Subsea manifolds, wellhead equipment

Chemical: Reactor flanges handling sulfuric/nitric acid

Power: Nuclear reactor coolant system connections

Custom Solutions

Non-standard bore sizes up to 64" (DN1600)

Integrated thermowell/vent ports for monitoring systems

PMI-tested materials with EN 10204 3.1 certificates

Explore Our HPVF Range: High-Pressure Stainless Steel Flanges