Forged Flanges
Flanges rolled rings and discs for pumps valves wellheads and pressure equipment
What Forged Flanges Is and Who It Is For
Forged flanges, rolled rings and discs are supplied for pumps and valves, for heat exchangers and pressure vessels together with tube sheets and nozzles, and for autoclave duty as machined head flanges, shell flanges, locking rings and closures. Pressure grades such as ASTM A350 LF2 and LF6 are part of the standard material range.
Key Benefits
- Pressure grades and stainless grades from the same forging programme
- Machined head flanges, shell flanges, locking rings and closures for autoclaves
- Tube sheets and nozzles supplied alongside the flanges
- Testing included with the value added services
| Pressure grades | ASTM A350 Grade LF2, ASTM A350 Grade LF6 |
|---|---|
| Alloy steels | 4140, 4150, 4330, 4330V, 4340, 1045, 1080 |
| Stainless | 304 and 316 |
| Autoclave scope | forged machined head flange, shell flange, locking ring, closures |
| Heat exchanger scope | flanges, tube sheets and nozzles |
Who It Is For
- Pump and valve manufacturers
- Pressure vessel and heat exchanger fabricators
- Autoclave builders
- Oil and gas equipment makers
Problems It Solves
- Plate cut flanges lack through thickness properties for pressure duty
- Mixed suppliers for flange, tube sheet and nozzle complicate certification
- Machined closures need tight tolerances that a forge alone cannot hold
Technical Features
- ASTM A350 Grade LF2 and LF6 pressure grades
- 304 and 316 stainless options
- Machined closures and locking rings
- Tube sheets and nozzles
Where Forged Flanges Is Used
Flanges, rolled rings and discs for pumps and valves
Flanges, rolled rings and discs for pumps and valves
Heat exchanger and pressure vessel flanges, tube sheets and nozzles
Heat exchanger and pressure vessel flanges, tube sheets and nozzles
Autoclave head flanges, shell flanges, locking rings and closures
Autoclave head flanges, shell flanges, locking rings and closures
Wellhead and valve forgings for oil and gas
Wellhead and valve forgings for oil and gas
Materials
- ASTM A350 LF2
- ASTM A350 LF6
- 4140
- 4340
- 304
- 316
Quality Control
- Testing carried out as part of the value added service package
- Dimensional inspection of sealing faces
- Material certification to the ordered grade
Customization Options
- Flange geometry to drawing or to the applicable standard
- Pressure or stainless grade selection
- Full machining including closures and locking rings
How We Make It
Drawing
Drawing and code requirement review
Open die forging or ring
Open die forging or ring rolling
Heat treatment
Machining of faces
Machining of faces, bores and bolt holes
Testing
Certification
Certification and shipment
Forged Flanges in Production
How It Compares
Forged flanges are specified over plate cut flanges wherever the joint sees pressure and cyclic loading, because the properties through the thickness are what the bolted joint relies on.
Use Guide
- State the code or standard the flange must satisfy
- List the testing required at enquiry stage, not after production
- Send the mating component drawing for closures and locking rings
Often Ordered Together
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Oil and Gas Forgings
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Questions Buyers Ask About Forged Flanges
Which pressure grades do you forge?
ASTM A350 Grade LF2 and ASTM A350 Grade LF6 are part of the standard alloy range, alongside 304 and 316 stainless.
Do you supply autoclave closures?
Yes, forged machined head flanges, shell flanges, locking rings and closures.
Is testing included?
Testing is one of the value added services supplied with the forging.
Get a Quote for Forged Flanges
Send the drawing, the quantity and the delivery condition you need. We reply with price, lead time and a sample plan.