Plate Flange (PL)
Flat-type flange with simple structure, light weight and low cost — ideal for low-pressure pipeline systems.
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Tube Sheet Flange (TS)
Critical forged tubesheet with flange rim for shell-and-tube heat exchangers — tube support, fluid isolation and high-pressure sealing in one component.
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TSSteel Pipe Flanges
Overview
A Tube Sheet Flange (often referred to simply as a Tubesheet) is a critical, specialized component primarily used in shell-and-tube heat exchangers, boilers, and pressure vessels. It is a thick, circular, forged steel plate integrated with a flange rim, serving the dual purpose of structurally supporting a bundle of tubes and acting as a pressure-containing seal to isolate two different fluids. The outer flange face connects and seals to the vessel shell, while the perforated centre holds heat-exchanger tubes fixed by welding, roller expansion, or hydraulic expansion — strictly separating tube-side fluid from shell-side fluid and preventing cross-contamination.
Size Range
Small bore to 4–5 m diameter
Pressure Class
Up to Class 2500 / PN420
Key Features
- Tube support & alignment — precision-drilled holes for hundreds or thousands of tubes
- Fluid isolation — impermeable barrier between tube-side and shell-side media
- Pressure boundary — withstands high internal pressure and extreme temperatures
- Single forged plate construction for maximum structural strength
- Extremely tight tolerances for hole diameter, pitch, perpendicularity and surface finish
- Flange facing options: Raised Face (RF), Ring Type Joint (RTJ) or Flat Face (FF)
- Tube fixing by welding, roller expansion or hydraulic expansion
- Custom hole patterns, pass partitions and sizes per project drawing
Benefits
- Dual functionality — structural tube support and pressure sealing in one component
- Extreme durability under high pressure, temperature and thermal cycling
- Superior sealing — zero leakage between process fluids
- Fully customizable — any size, material or hole pattern to meet project specifications
Specifications
| Standards | ASME Section VIII, ASME B16.5, ASME B16.47, GB 150/151 |
| Pressure Ratings | Up to Class 2500 / PN420 |
| Size Range | Small bore to 4–5 m diameter (power & chemical plants) |
| Construction | Single forged plate with integrated flange rim |
| Tube Fixing | Welding, roller expansion or hydraulic expansion |
| Flange Facing | RF (Raised Face), RTJ (Ring Type Joint), FF (Flat Face) |
| Precision | Tight hole diameter, pitch, perpendicularity and surface finish |
Applications
Shell-and-tube heat exchangers (oil refineries, chemical plants)Boilers & steam generators (power stations)Condensers & evaporators (HVAC, refrigeration, desalination)Pressure vessels (petrochemical, nuclear industries)
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Standards
- • ASME Section VIII
- • ASME B16.5
- • ASME B16.47
- • GB 150
- • GB 151
Materials
- • Carbon Steel: A105, A350 LF2, Q345R (general, non-corrosive service)
- • Stainless Steel: 304/304L, 316/316L (corrosive environments)
- • High-Alloy & Special Metals: Titanium, Hastelloy, Inconel, Duplex Steel
Related Products
Slip On Flange (SO)
Sleeve-type flange slipped over the pipe and fixed by fillet welding — economical for medium and low pressure systems.
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Lap Joint Flange (LJ)
Loose flange with stub end — convenient disassembly for large-diameter, low and medium pressure systems.
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