What This Part Is And Why It Is Made This Way
Rolling a ring instead of cutting one from plate removes the weld and aligns the grain around the circumference, which is why rings in pressure and rotating duty are forged. The limit is diameter capacity, and few suppliers reach the largest sizes.
Rings, cones and cylinders are rolled to a maximum diameter of 9000 mm, then heat treated, machined and inspected.
What You Get From This Route
Maximum diameter 9000 mm covers sizes many suppliers cannot roll.
Ring, cone and cylinder shapes on the same route.
Leak test, roughness, inner diameter and roundness checks on ring products.
Application Scenarios
- Oil and gas equipment rings
- Wind power and energy components
- Construction machinery slewing rings
- Pressure vessel ring sections
Who It Is For
- Energy equipment manufacturers
- Pressure equipment fabricators
- Buyers importing large rings at long lead time
Technical Features
- Rolled ring forging, maximum diameter 9000 mm
- Ring, cone and cylinder shapes
- Applications in oil and gas, construction machinery, wind power and pressure vessel equipment
- Ring checks: leak test, roughness, inner diameter, roundness
What Buyers Run Into Without This Specification
- The required diameter is beyond the local supplier's rolling capacity.
- A welded ring fails at the seam in cyclic service.
- Roundness after heat treatment is outside the machining allowance.
Published Material Weight And Process Data
Figures below are the published capability for precision forging. Part specific values — tolerance on individual features, finish, packing — are confirmed at drawing review and marked TBC until then.
| Closed Die Forging | Equipment 300 T - 8000 T; product weight 0.2 kg - 100 kg |
|---|---|
| Rolled Ring Forging | Maximum diameter 9000 mm; ring, cone and cylinder shapes |
| Open Die Forging | No die cost, short development cycle, flexible size selection for large forgings |
| Carbon Steel | C22E / 20, C35E / 35, C45E / 45, C55E / 55 |
| Alloy Steel | 16MnCr5, 20MnCr5, 42CrMo4 / 42CrMo, 34CrNiMo6, 25CrMo4 / 25CrMo, 41Cr4 / 40Cr, 18CrNiMo7-6 |
| Stainless Steel | 1.4301 / 304, 1.4401 / 316, 1.4542 / 17-4PH, 1.4021 / 20Cr13, 1.4057 / 30Cr13 |
| Certificates | Production partners can support IATF 16949:2016 and ISO 9001:2015 |
| Part Specific Tolerance | TBC — confirmed against the customer drawing |
| Minimum Order Quantity | TBC — depends on the process route selected |
| Lead Time | TBC — confirmed with the production base at quotation |
How The Part Is Made And Checked
- CMM — Zeiss and Hexagon three coordinate measurement of critical dimensions and assembly positions.
- 3D Scan — Complex surfaces, contours and sample development stage dimensional verification.
- Mechanical — Tensile, hardness, -60 °C impact, metallographic and chemical composition testing.
- NDT — UT, MT, PT and RT non destructive testing.
- Ring Check — Leak testing, roughness, inner diameter and roundness related checks.
Quality management is based on ISO 9001 and covers supplier management, raw material inspection, production process control and final inspection. Inspection results are archived and traceable.
Options And Alternatives
Parts are produced to the customer drawing rather than to a fixed catalogue item, so material grade, machining scope, surface treatment and packing are all specified per order. Machining, dimensional control, surface treatment and necessary pre-assembly can be added to the same supply route.
Where another process family would suit the part better — for example a forging in place of a casting for a shock loaded connector — that comparison is raised during drawing review rather than after tooling is committed.
How To Specify This Part
Give the finished ring dimensions and the allowance you need after heat treatment. Rings move during heat treatment, so an allowance agreed in advance is what guarantees the ring cleans up to size.
- Send the drawing with material, quantity, quality standard and target delivery date.
- State the inspection class and the zones it applies to, rather than a general note.
- Confirm the packing requirement and the lifting equipment available at the destination.
Related Guides
Other Parts In This Range
Precision Die Forged Shafts
Die forged shafts from 0.2 kg to 100 kg
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Closed Die Forged Connectors
High volume forged connection parts
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High Strength Connection and Lifting Components
Rated lifting and connection hardware
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Agricultural Machinery Forgings
Seasonal volume forgings for farm equipment
View specificationsRolled Ring Forgings — Frequently Asked Questions
What is the largest ring you can roll?
Rolled ring forging reaches a maximum diameter of 9000 mm in ring, cone and cylinder shapes.
Which checks are carried out on rings?
Leak testing, roughness, inner diameter and roundness related checks are carried out on ring products.
What do you need to prepare a quotation?
Drawings, material, quantity, quality standard and target delivery date.
Which inspection is included?
The inspection scope is agreed during drawing review. Leak testing, roughness, inner diameter and roundness related checks.
Get A Quotation For Rolled Ring Forgings
Send the drawing and the application. We will confirm the process route, the production base and the inspection scope before quoting.