Threaded Flange for Small Bore Pipe and Repair Services
Threaded flanges provide weld-free connections for small bore piping systems. Combined with professional repair and machining services, they offer cost-effective solutions for industrial maintenance and new installations.
نظرة عامة على الشفة الملولبة
Threaded flanges connect to pipes using internal threads, eliminating the need for welding:
الميزات الرئيسية
- Internal threads: NPT, BSP, or PT
- لا حاجة للحام
- Quick installation and disassembly
- Ideal for hazardous areas
نطاق الحجم
- Available: NPS 1/2 inch to NPS 4 inch
- DN15 to DN100 metric sizes
- Pressure classes: 150 to 2500
معايير الموضوع
| قياسي | Region | الوصف |
|---|---|---|
| NPT | North America | National Pipe Tapered |
| BSP | Europe/Asia | British Standard Pipe |
| PT | Japan | Japanese Taper Pipe |
Applications for Small Bore Pipe
Common Uses
- توصيلات الأدوات
- Sample points and drains
- Vent lines
- Compressed air systems
- Water distribution
- التركيبات المؤقتة
المزايا
- No hot work permit required
- Safe for hazardous locations
- Easy maintenance access
- Lower installation cost
- Reusable components
القيود
- Limited to NPS 4 and below
- Lower pressure than weld neck
- Thread corrosion risk
- Not for thermal cycling
Flange Repair and Machining Service
Professional repair services extend flange life and reduce replacement costs:
Repair Capabilities
- Face resurfacing: Repair damaged sealing surfaces
- Bore machining: Restore proper pipe fit
- Bolt hole repair: Fix stripped holes
- Weld overlay: Build up worn surfaces
- Re-drilling: Modify bolt patterns
- Thread repair: Restore damaged threads
Machining Services
- CNC machining for precision
- Large diameter boring
- Custom gasket grooves
- Special facing (RF, FF, RTJ)
- Counterboring and chamfering
When to Repair vs Replace
| Damage Type | Solution |
|---|---|
| Minor face scratches | Resurface |
| Deep gouges | Weld overlay then machine |
| Cracked flange | Replace |
| Severe corrosion | Replace |
| Stripped bolt holes | Repair or replace |
شفة مع شهادة CE للتصدير
European market requires CE marking and PED compliance:
Certification Package
- وضع علامة CE حسب PED 2014/68/EU
- Notified Body certification (TUV, BV)
- Material certificates EN 10204 3.1
- Hydrostatic test reports
- Technical documentation file
- Declaration of Conformity
Export Standards
- ASME B16.5: Americas
- EN 1092-1: Europe
- GB/T 9115: China
- JIS B2220: Japan
- GOST: Russia/CIS
خدمة تصنيع الشفة ذات القطر الكبير
Custom manufacturing for oversized flanges:
Capabilities
- Diameter range: DN15 to DN4000
- الحد الأقصى للوزن: 5 أطنان للقطعة الواحدة
- Plate rolling and welding
- Segmented fabrication for very large sizes
- Custom pressure ratings
التطبيقات
- Water treatment plant headers
- HVAC main ducts
- Industrial exhaust systems
- Marine piping systems
- Power plant cooling water
مراقبة الجودة
Inspection Procedures
- فحص الأبعاد باستخدام CMM
- Visual examination per standards
- Magnetic particle testing
- Liquid penetrant testing
- Hardness testing
- قياس سُمك الطلاء
Documentation
- تقارير اختبار المواد حسب الحرارة
- تقارير فحص الأبعاد
- Non-destructive testing reports
- Pressure test certificates
- Third-party inspection reports
Lead Time and Service
- Standard threaded flanges: 3-7 days
- Repair services: 5-10 days
- Custom machining: 10-20 days
- Large diameter: 20-30 days
Songhai Flange supplies threaded flanges for small bore pipe applications and provides comprehensive repair and machining services. CE certified products available for export with fast turnaround times.
واتساب: +86-18658777855
البريد الإلكتروني: 1007788887@qq.com

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