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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