Ring forgings

Large & Custom Ring Forgings

Seamless rolled and open-die forged rings for energy, heavy equipment, offshore and industrial applications.

Large ring forging under heavy vertical machining in the Yongxinsheng workshop

Ring forging product types

Manufacturing routes
by ring geometry.

Ring configuration, material, section thickness, heat treatment and inspection level are reviewed together. The categories below describe manufacturing capability—not stocked catalogue items.

Rolled Ring Forgings

Ring-rolled components supplied as-forged, rough machined or finish machined to an approved drawing.

Seamless Rolled Rings

Continuous-grain-flow rings produced without a longitudinal weld seam.

Forged Ring Blanks

Machining stock prepared for subsequent gear, bearing, flange or equipment-component manufacture.

Large Diameter Rings

Large-section ring enquiries reviewed against press preparation, ring rolling, handling and heat-treatment route.

Gear Ring Blanks

Forged and rolled blanks prepared with project-specific machining allowance and property requirements.

Bearing Rings

Ring forgings controlled for material identity, heat treatment, machining and specified inspection.

Flange Rings

Forged rings for large or non-standard flange manufacture to the customer’s drawing and specification.

Custom Profile Rings

Rectangular or profiled ring sections developed after engineering review of the finished geometry.

Manufacturing range

Drawing-specific
capability confirmation.

Verified blanket dimensional limits have not yet been released for publication. Engineering confirms manufacturability from the drawing, material specification, final properties and delivery condition.

Specification basisProject
dependent

Send OD, ID, height, section profile, material, quantity and required testing for a controlled technical review.

Outside Diameter: Project dependent — contact engineering
Inside Diameter: Project dependent — contact engineering
Height: Project dependent — contact engineering
Wall Thickness: Project dependent — contact engineering
Unit Weight: Project dependent — contact engineering
Material: Confirmed against grade, section and property requirements
Heat Treatment: Specified per material and required mechanical properties
Machining: As-forged / rough machined / finish machined, subject to drawing review
Inspection: UT / MT / PT / PMI and dimensional inspection as specified

Materials

Representative ring
forging material families.

Grade availability depends on ring size, section, heat-treatment route, property requirements and material sourcing. Listing a grade does not imply availability for every ring geometry.

Carbon / Low-Temperature / High-Strength Carbon Steel

ASTM A105 · ASTM A350 LF2 · ASTM A694 F65

Alloy Steel

42CrMo4 / AISI 4140

Stainless Steel

ASTM A182 F304 / F316 / F316L

Duplex Stainless Steel

ASTM A182 F51 / 2205

High-Temperature Alloy Steel

ASTM A182 F91 / F92

Final grade acceptance and manufacturing route are confirmed only after engineering review.

Manufacturing process

Controlled route from
material to shipment.

The applicable route and hold points are established from the purchase specification, drawing, material grade and inspection plan.

Raw Material→Heating→Forging→Ring Rolling→Heat Treatment→Machining→NDT→Final Inspection→Shipment

Hydraulic press preparing a large ring forging blank — **Forging preparation**Controlled heating and open-die deformation before ring rolling.

Large ring forging in the production and machining workshop — **Ring processing**Ring production followed by heavy turning to the approved route.

Large forgings during heat treatment handling — **Heat treatment**Project-specific furnace cycle selected for grade and property requirements.

NDT and PMI inspection of forged components — **Inspection & release**NDT, material verification and final documentation before shipment.

15,000 ton and 8,000 ton hydraulic forging press operations — Installed forming equipment for large custom forgings

Manufacturing equipment

Press capacity and
downstream control.

15,000THydraulic forging press capacity

8,000THydraulic forging press capacity

Ring rollingLarge ring forming capability

Heat treatmentIn-house furnace capability

Heavy machiningLarge turning, facing and boring equipment

Quality & inspection

Inspection matched
to the project ITP.

Inspection scope, procedure, acceptance criteria and documentation are agreed before production. Additional testing is performed where required by the purchase specification.

UTUltrasonic testing

MTMagnetic particle testing

PTLiquid penetrant testing

PMIPositive material identification

HARDNESSHardness testing where specified

DIMDimensional inspection

LABChemical / mechanical testing where required

3.1EN 10204 3.1 documentation

Applications

Ring forgings by
operating duty.

Application review connects ring geometry and material requirements with heat treatment, machining, inspection and documentation.

Power Generation

Generator rings, turbine-related ring components and rotating-equipment blanks.

Oil & Gas

Pressure-equipment rings, flange rings and drawing-specific heavy components.

Mining & Heavy Equipment

Gear ring blanks, support rings and high-load machinery components.

Marine & Offshore

Slewing, structural and equipment rings with project-specific inspection.

Petrochemical

Pressure-boundary and process-equipment ring forgings.

Industrial Machinery

Bearing rings, gear blanks and custom machined ring components.

Engineering RFQ

Send the ring requirement
for technical review.

Provide the finished geometry or machining drawing, material specification, quantity, heat treatment, inspection level and delivery condition.

Confidential drawing handling · NDA support available before submission.