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:
Các tính năng chính
- Internal threads: NPT, BSP, or PT
- Không cần hàn
- Quick installation and disassembly
- Ideal for hazardous areas
Phạm vi kích thước
- Available: NPS 1/2 inch to NPS 4 inch
- DN15 to DN100 metric sizes
- Pressure classes: 150 to 2500
Tiêu chuẩn ren
| Tiêu chuẩn | Khu vực | Description |
|---|---|---|
| NPT | North America | National Pipe Tapered |
| BSP | Europe/Asia | British Standard Pipe |
| PT | Japan | Japanese Taper Pipe |
Applications for Small Bore Pipe
Common Uses
- Kết nối thiết bị
- Sample points and drains
- Vent lines
- Compressed air systems
- Water distribution
- Các công trình tạm thời
Ưu điểm
- No hot work permit required
- Safe for hazardous locations
- Dễ dàng tiếp cận để bảo trì
- Lower installation cost
- Reusable components
Hạn chế
- Chỉ áp dụng cho NPS 4 trở xuống
- Lower pressure than weld neck
- Nguy cơ ăn mòn ren
- Không dùng cho quá trình nhiệt tuần hoàn
Dịch vụ sửa chữa và gia công mặt bích
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
- Lớp hàn phủ: Phục hồi bề mặt bị mòn
- 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 |
Mặt bích có chứng nhận CE dành cho xuất khẩu
European market requires CE marking and PED compliance:
Gói chứng nhận
- CE Marking per PED 2014/68/EU
- Notified Body certification (TUV, BV)
- Material certificates EN 10204 3.1
- Báo cáo thử nghiệm thủy tĩnh
- Technical documentation file
- Giấy chứng nhận phù hợp
Tiêu chuẩn xuất khẩu
- 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
Ứng dụng
- Water treatment plant headers
- HVAC main ducts
- Industrial exhaust systems
- Marine piping systems
- Power plant cooling water
Kiểm soát chất lượng
Quy trình kiểm tra
- Kiểm tra kích thước bằng máy đo tọa độ (CMM)
- Visual examination per standards
- Magnetic particle testing
- Liquid penetrant testing
- Thử nghiệm độ cứng
- Coating thickness measurement
Tài liệu
- Báo cáo thử nghiệm vật liệu theo từng mẻ
- Báo cáo kiểm tra kích thước
- Báo cáo kiểm tra không phá hủy
- Giấy chứng nhận thử áp lực
- Báo cáo kiểm tra của bên thứ ba
Lead Time and Service
- Standard threaded flanges: 3-7 days
- Repair services: 5-10 days
- Custom machining: 10-20 days
- Đường kính lớn: 20–30 ngày
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.
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