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.
Threaded Flange Overview
Threaded flanges connect to pipes using internal threads, eliminating the need for welding:
Caratteristiche principali
- Internal threads: NPT, BSP, or PT
- Non è necessaria la saldatura
- Quick installation and disassembly
- Ideal for hazardous areas
Gamma di dimensioni
- Available: NPS 1/2 inch to NPS 4 inch
- DN15 to DN100 metric sizes
- Pressure classes: 150 to 2500
Thread Standards
| Standard | Region | Descrizione |
|---|---|---|
| NPT | North America | National Pipe Tapered |
| BSP | Europe/Asia | British Standard Pipe |
| PT | Japan | Japanese Taper Pipe |
Applications for Small Bore Pipe
Common Uses
- Connessioni degli strumenti
- Sample points and drains
- Vent lines
- Compressed air systems
- Water distribution
- Installazioni temporanee
Vantaggi
- No hot work permit required
- Safe for hazardous locations
- Easy maintenance access
- Lower installation cost
- Reusable components
Limitations
- 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
- Sovrapposizione di saldatura: Ricostruzione di superfici usurate
- 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 |
Flangia con certificazione CE per l'esportazione
European market requires CE marking and PED compliance:
Pacchetto di certificazione
- CE Marking per PED 2014/68/EU
- Notified Body certification (TUV, BV)
- Material certificates EN 10204 3.1
- Rapporti di prova idrostatica
- Technical documentation file
- Declaration of Conformity
Standard di esportazione
- ASME B16.5: Americas
- EN 1092-1: Europe
- GB/T 9115: China
- JIS B2220: Japan
- GOST: Russia/CIS
Large Diameter Flange Fabrication Service
Custom manufacturing for oversized flanges:
Capabilities
- Diameter range: DN15 to DN4000
- Maximum weight: 5 tons per piece
- Plate rolling and welding
- Segmented fabrication for very large sizes
- Custom pressure ratings
Applicazioni
- Water treatment plant headers
- HVAC main ducts
- Industrial exhaust systems
- Marine piping systems
- Power plant cooling water
Controllo qualità
Procedure di ispezione
- Controllo dimensionale con CMM
- Visual examination per standards
- Magnetic particle testing
- Liquid penetrant testing
- Test di durezza
- Coating thickness measurement
Documentazione
- Rapporti di prova dei materiali per calore
- Rapporti di ispezione dimensionale
- Rapporti sui test non distruttivi
- Certificati di prova di pressione
- Rapporti di ispezione di terzi
Lead Time and Service
- Standard threaded flanges: 3-7 days
- Repair services: 5-10 days
- Custom machining: 10-20 days
- Diametro grande: 20-30 giorni
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.
WhatsApp: +86-18658777855
E-mail: 1007788887@qq.com
Ti potrebbe interessare anche
DIN Flanges vs ANSI Flange: ANSI Class 150, PN Rating and Selection Guide
A practical guide comparing DIN flanges and ANSI flange standards, including ANSI Class 150, PN meaning, flange rating ANSI systems, bolt patterns, dimensions and selection tips.
Flange Coupling Guide: Coupling Flange Type, Flanged Coupler and Shaft Applications
A practical guide to flange coupling, coupling flange type selection, flanged coupler structure, flange shaft coupling applications, installation and maintenance.
What Is an Orifice Flange? Orifice in Piping, Orifice Pipe and Flow Measurement Guide
A practical guide explaining what an orifice flange is, how an orifice in piping works, orifice pipe flow measurement, pressure taps, orifice plates and selection tips.