Large Diameter Flange Fabrication Services
For industrial pipeline projects requiring oversized and custom flanges, professional fabrication services ensure precise dimensions, reliable performance, and international certification compliance.
Custom Size Flange Capabilities
Our manufacturing facility specializes in large diameter flange fabrication for industrial pipeline applications:
نطاق الحجم
- Standard sizes: DN15 to DN600 (NPS 1/2 to 24)
- Large diameter: DN650 to DN4000 (26 to 160 inches)
- Maximum weight: Up to 5 tons per piece
- Thickness: Up to 200mm
عملية التصنيع
- Material selection and inspection
- Plate cutting and beveling
- Rolling and forming
- اللحام والتجميع
- المعالجة الحرارية
- Machining and finishing
- Quality inspection and testing
شفة مع شهادة CE للتصدير
European market requires CE marking and PED compliance for pressure equipment:
Certification Package
- علامة CE: Compliance with PED 2014/68/EU
- Notified Body: TUV, BV, SGS certification
- Material Certificates: EN 10204 3.1 MTR
- Pressure Testing: Hydrostatic test reports
- Technical File: التوثيق الكامل
- Declaration of Conformity: EU compliance statement
Export Standards
- ASME B16.5 / B16.47 (Americas)
- EN 1092-1 (Europe)
- GB/T 9115 (China)
- JIS B2220 (Japan)
- GOST (Russia/CIS)
شفة مع خدمة الحفر للنفط والغاز
Custom drilling patterns ensure perfect compatibility with existing pipeline infrastructure:
Drilling Capabilities
- CNC drilling machines for precision
- Standard bolt patterns (ASME, EN, JIS, GB)
- Custom drilling per client drawings
- Oversized holes for field adjustment
- Tapped holes for special applications
- Counterboring for flush bolts
Oil and Gas Applications
- Wellhead equipment
- Pipeline manifolds
- Refinery process piping
- Offshore platforms
- LNG terminals
High Pressure Alloy Steel Flange Exporter
Specialized in high-pressure alloy flanges for extreme conditions:
Alloy Materials
| Grade | Composition | Max Temp |
|---|---|---|
| F11 | 1.25Cr-0.5Mo | 550°C |
| F22 | 2.25Cr-1Mo | 580°C |
| F91 | 9Cr-1Mo-V-Nb | 620°C |
| F5 | 5Cr-0.5Mo | 600°C |
| F9 | 9Cr-1Mo | 650°C |
فئات الضغط
- Class 600: Up to 110 bar working pressure
- Class 900: Up to 165 bar
- Class 1500: Up to 276 bar
- Class 2500: Up to 460 bar
Quality Control and Testing
Inspection Procedures
- Dimensional inspection (CMM)
- Visual testing (VT)
- Magnetic particle testing (MT)
- Liquid penetrant testing (PT)
- Ultrasonic testing (UT)
- Radiographic testing (RT)
- Hardness testing
- Impact testing (Charpy V-notch)
Documentation
- Material test reports (MTR)
- Heat treatment charts
- Non-destructive testing reports
- تقارير فحص الأبعاد
- Pressure test certificates
- Third-party inspection reports
Packaging and Shipping
- Wooden crates for ocean freight
- Protective coating on sealing faces
- Bolt hole protectors
- Clear marking and labeling
- تحسين تحميل الحاويات
Lead Time and Capacity
- Standard flanges: 7-15 days
- Large diameter: 20-30 days
- Custom alloy: 30-45 days
- Monthly capacity: 500+ tons
Songhai Flange provides large diameter flange fabrication services with CE certification for global export. Contact us for custom drilling, alloy materials, and competitive pricing.
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