Precision Machined Round Flanges | High-Pressure Piping Solutions
Premium Circular Flanges for Critical Industrial Systems
Engineered for leak-proof performance in demanding environments, our precision-machined round flanges deliver exceptional reliability for high-pressure piping applications across oil & gas, chemical processing, and power generation industries.
Product Specifications
① Material Excellence
Carbon Steel: ASTM A105 forged flanges
Stainless Steel: A182 F304/F316 corrosion-resistant options
High-Yield Alloy: A694 F42/F52 with optional hot-dip galvanizing
Special Alloys: Duplex/Super Duplex available upon request
② Precision Engineering
Tolerance Standards: ANSI/ASME B16.5 Class 150-2500
Surface Finishing:
Ra 3.2μm machined finish (standard)
Ra 1.6μm precision-ground sealing surfaces
4-Axis CNC Machining:
±0.02mm flatness tolerance
True-position drilling within 0.05mm
③ Configuration Options
| Flange Type | Pressure Rating | Temperature Range |
|---|---|---|
| Weld Neck | Class 150-2500 | -29°C to 816°C |
| Slip-On | Class 150-900 | -29°C to 538°C |
| Blind | Class 150-2500 | -29°C to 816°C |
| Lap Joint | Class 150-600 | -29°C to 427°C |
④ Performance Features
Sealing Surfaces:
Raised Face (RF)
Flat Face (FF)
Ring-Type Joint (RTJ)
Bolt Patterns:
ASME standard configurations
Custom drilling patterns available
Pressure Testing:
Hydrostatic tested to 1.5x rated pressure
PMI (Positive Material Identification) verified
Industry Applications
Oil & Gas Sector:
Offshore platform piping
Refinery process lines
Subsea connection systems
Power Generation:
Steam turbine connections
Boiler feedwater systems
Cooling water circuits
Chemical Processing:
Acid transfer lines
High-purity systems
Reactor connections
Water Treatment:
Desalination plants
High-pressure RO systems
Pump discharge headers
Quality Assurance & Compliance
Certifications:
ASME B16.5 & B16.47 Series A/B
API 6A wellhead flange standards
PED 2014/68/EU compliant
NACE MR0175 for sour service
Testing Documentation:
Mill Test Reports (MTR) with 3.1/3.2 certification
Liquid penetrant examination reports
Hardness test records
Global Availability:
US/EU warehouses with fast shipment
Custom machining lead time: 15-30 days
Small batch orders accepted
Engineering Support Services:
Flange stress analysis
Gasket selection guidance
Bolt torque calculations
Corrosion resistance consulting
Contact our fluid systems specialists for technical drawings and quotation requests
