Bronze Plate Flanges Manufacturer & Exporter
Plate flanges are flat rings with a bore and a bolt-hole pattern. They are simple, economical and easy to adapt to special drilling, thickness and bore requirements.
What is a Plate flange?
A plate flange has no hub. It is a flat ring with a central bore and drilled bolt holes, and is attached to the pipe by welding or brazing, or by being bolted behind a collar or ring. It is the same basic configuration that EN flange nomenclature describes as a Type 01 plate flange.
Because there is no hub, plate flanges are simple to make and straightforward to modify. They are widely used on low-pressure pipework, ducting, tank connections and fabricated assemblies, and are a common request for special sizes where a standard hubbed flange is not available.
Construction
- Flat ring, with the bore sized to the pipe or to the drawing
- Face flat or raised, as specified
- Bolt holes to specified PCD, number and diameter
- Edge chamfers or special profiles as required
- Thickness chosen to suit pressure and bolting load
Values vary according to applicable specification, material condition and customer requirements.
Bronze Plate Flanges — specification
| Type | Plate (flat) flange |
|---|---|
| Bore | Standard, or custom to drawing |
| Drilling | Per standard or customer PCD pattern |
| Thickness | As per standard / customer requirement |
| Sizes | As per customer requirement / applicable standard |
| Pressure classes | Pressure classes and pressure-temperature ratings are defined by the standard applied and depend on alloy and temperature. Available as per applicable material and dimensional standard. |
| Facing options | Flat face (FF), raised face (RF) or custom facing as specified by the standard or drawing. |
| Standards | Typical reference standards for copper-alloy flanges include ASME B16.24 (cast copper alloy pipe flanges and flanged fittings), MSS SP-106 (cast copper alloy flanges and flanged fittings) and EN 1092-3 (copper alloy flanges). Customer drawings and other national or project standards are also worked to. The standard to be applied is confirmed when the enquiry is reviewed. |
|---|---|
| Dimensions | Outside diameter, thickness, bore, bolt-circle diameter, number and size of holes per the standard or customer drawing. Available as per applicable material and dimensional standard. |
Available bronze materials
Available as per applicable material and dimensional standard. Select a grade for composition limits, mechanical properties and corrosion notes.
| UNS grade | Alloy family | Note |
|---|---|---|
| UNS C83600 | Leaded red brass / composition bronze (Cu-Sn-Pb-Zn) | UNS C83600 — commonly called gunmetal, composition bronze or red bronze — is the traditional general-purpose cast alloy for valves, pump parts and pipe fittings, and the material behind our gunmetal flanges. |
| UNS C84400 | Leaded semi-red brass (Cu-Zn-Pb-Sn) | UNS C84400 is a leaded semi-red brass, often called valve composition, used extensively for valves, plumbing and general fittings where free machining and economy matter. |
| UNS C93200 | Leaded tin bronze (Cu-Sn-Pb-Zn) | UNS C93200 is a leaded tin bronze widely used where free machining, good pressure tightness in castings and bearing behaviour matter more than very high strength. |
| UNS C95400 | Aluminium bronze (Cu-Al-Fe) | UNS C95400 is a heat-treatable aluminium bronze that combines high strength with good wear and corrosion performance, making it a common choice for demanding pump, valve and marine components. |
| UNS C63000 | Wrought nickel aluminium bronze (Cu-Al-Ni-Fe-Mn-Si) | UNS C63000 is a wrought (not cast) aluminium bronze. |
Where these flanges are used
- Low-pressure pipework and tank connections
- Fabricated assemblies and skid-mounted equipment
- Ducting and ventilation connections
- Replacement flanges to existing drilling patterns
See also: HVAC · General Engineering · OEM Equipment.
Inspection and testing
- Thickness and outside diameter
- Bore diameter
- Hole pattern (PCD), number and size of holes
- Face flatness and surface finish
- Material identification and documents as agreed (MTC, inspection report, as applicable)
Made to your specification
Drilling patterns, thickness and bore can be supplied exactly as drawn. For replacement flanges, a sample or a measured sketch is a useful alternative to a drawing.
For non-standard dimensions, see custom & special flanges.
Related flange types
- Blind FlangesBlind flanges are solid discs used to close the end of a pipe, valve or pressure vessel nozzle.
- Slip-On FlangesSlip-on flanges are machined from bronze and copper-alloy grades so that the pipe slides into the bore and is secured by fillet welding or brazing, depending on material and procedure..
- Custom / Special FlangesSend your drawing, sample or specification.
Have a Bronze Flange Requirement?
Send us your drawing, specification, material grade, size and quantity.