Bronze Flanges Manufacturer & Exporter — Products
Nine flange types in bronze, gunmetal and aluminium bronze, made to customer drawings and applicable standards.
Choose a flange type
Slip-On Flanges
Slip-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.
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Threaded / Screwed Flanges
Threaded flanges connect to pipe through an internal thread, avoiding welding at the joint. Bronze and gunmetal are well suited because they machine cleanly and hold thread form.
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Blind Flanges
Blind flanges are solid discs used to close the end of a pipe, valve or pressure vessel nozzle. In bronze and copper alloys they are used for isolation, maintenance access and pressure testing.
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Socket-Weld Flanges
Socket-weld flanges have a recess into which the pipe is inserted. They are used mainly on smaller-diameter piping where a strong, well-aligned joint is needed.
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Lap Joint Flanges
A lap joint flange is a loose flange used together with a stub end. The flange rotates freely on the pipe, which simplifies bolt-hole alignment during assembly.
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Plate Flanges
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.
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Reducing Flanges
A reducing flange connects a pipe of one nominal size to a mating flange of a different, larger size, using a single flange with a reduced bore.
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Loose Flanges
Loose flanges are not fixed to the pipe. They bear against a collar, stub or lapped pipe end and are free to rotate for easy alignment of bolt holes.
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Custom / Special Flanges
Send your drawing, sample or specification. We manufacture non-standard and special flanges in bronze, gunmetal and aluminium bronze for OEM and project requirements.
View details →Typical bronze flange specifications
Values vary according to applicable specification, material condition and customer requirements. Where a specification varies by alloy or standard: Available as per applicable material and dimensional standard.
| Product | Bronze flanges |
|---|---|
| Materials | C93200, C95400, C95500, C95800, C63000, C83600, C84400 |
| Types | Slip-On, Threaded, Blind, Socket Weld, Lap Joint, Plate, Reducing, Loose, Custom / Special |
| Size | As per customer requirement / applicable standard |
| Pressure class | As applicable |
| Facing | FF / RF / Custom |
| Bore | Standard / Custom |
| Manufacturing | Casting / machining / as specified |
| Inspection | Dimensional / visual / material / testing as applicable |
| Marking | As per customer requirement |
| Surface | Machined / as specified |
| Documentation | MTC / inspection documents as applicable |
Bronze flange materials
Select a grade for composition, mechanical properties and application guidance.
| UNS grade | Alloy family | Typical flange use |
|---|---|---|
| UNS C93200 | Leaded tin bronze | General industrial piping, equipment flanges, machined threaded parts |
| UNS C95400 | Aluminium bronze | Higher-strength pump, valve and marine flanges |
| UNS C95500 | High-strength aluminium bronze | Heavy-duty marine and industrial flanges |
| UNS C95800 | Nickel aluminium bronze | Seawater, marine, offshore and desalination piping |
| UNS C63000 | Wrought nickel aluminium bronze | Flanges machined from bar or forging stock |
| UNS C83600 | Gunmetal / composition bronze | Pipe, pump and valve flanges for water and general service |
| UNS C84400 | Semi-red brass (valve composition) | Plumbing, valve and fitting flanges at moderate duty |
Have a Bronze Flange Requirement?
Send us your drawing, specification, material grade, size and quantity.