PLSteel Pipe FlangesPlate Flange (PL)
Flat-type flange with simple structure, light weight and low cost — ideal for low-pressure pipeline systems.
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Flange with Hub
Hubbed slip-on flange with reinforced connection — inside and outside fillet weld options.
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FHSteel Pipe Flanges
Overview
Slip-on flanges with hub, also called hubbed flanges, feature a low-profile hub and are typically connected to pipes using fillet welds on the outside and inside of the flange. They provide enhanced weld area compared to standard slip-on flanges at a competitive price point.
Size Range
½" – 48"
Pressure Class
Class 150 – 600 / PN10 – PN40
Key Features
- Low-profile hub for reinforced connection
- Inside and outside fillet weld options
- Cost-effective vs full weld neck
- Wide material and size availability
Benefits
- Enhanced weld area vs standard slip-on
- Flexible weld configuration
- Competitive pricing for medium service
Specifications
| Nominal Diameter | DN15 – DN2000 (NPS ½" – 80") |
| Pressure Rating | Class 150 – 2500 / PN6 – PN420 |
| Schedule | SCH40 / SCH80 / SCH120 / SCH160 / XXS |
| Sealing Face | RF, FF, RTJ, MFM |
| Testing | Per BS 6755 / customer specification |
Applications
General industrial pipingProcess plant utility linesMedium pressure systems
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Standards
- • ISO 7005
- • ASME B16.5
- • EN 1092-1
- • DIN 2501
- • JIS B2220
- • GB/T 9115–9119
- • HG/T 20592
Materials
- • Carbon Steel: A105, 20#, Q235B, A234 WPB
- • Stainless Steel: 304, 304L, 316, 316L, 321
- • Alloy Steel: 16Mn, F11, F22, 15CrMo
- • Duplex & Super Duplex: F51, F53, 2205
- • Special alloys: Monel, Hastelloy, Titanium (on request)
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