Description
What Are Ring Forgings?
Ring forgings are indispensable components in heavy machinery and critical pressure-bearing equipment. They are formed through a forging process involving radial expansion and circumferential compression, resulting in a dense internal structure with a circumferentially distributed grain structure, and exhibiting excellent overall strength and fatigue resistance.
As a professional ring forging manufacturer, we produce custom forged rings with stable dimensions, high strength, and excellent reliability for demanding industrial use.
Applications of Forged Rings Across Industries
Our forged rings find extensive application in industries where high safety and reliability are paramount, owing to their superior mechanical performance and dimensional stability.
1. Petrochemical Ring Forgings
Forgings have wide applications in petrochemical equipment. Typical products include:
Manholes and flanges for spherical storage tanks
High-pressure welding flanges
Tube sheets and sealing rings
All of these components are finished as ring forgings requiring high toughness and corrosion resistance.
2. Nuclear Power Ring Forgings
The main large forgings in nuclear power plants are pressure vessel forgings, including:
Cylinder flanges
Nozzle sections and nozzles
Upper and lower cylinders
Cylinder transition sections
Large nuclear-grade bolts
These nuclear ring forgings must withstand extreme pressure cycles and radiation conditions.
3. Thermal Power Ring Forgings
Thermal power generation equipment contains four key forgings:
Turbine generator rotor
Retaining rings
Turbine impeller
Turbine rotor
These forged rings ensure stable high-speed rotation and resistance to thermal stress.
4. Hydropower Ring Forgings
Important forgings in hydropower stations include:
Turbine main shaft
Generator main shaft
Mirror plates
Thrust heads
These rotors and shafts require reliable large diameter ring forgings.
5. Marine Ring Forgings
Marine forgings are divided into three main categories:
Main engine forgings
Shafting forgings
Rudder system forgings
Shafting forgings include thrust shafts, intermediate shafts, and stern shafts, while rudder components include rudder stock, rudder post, and rudder pin. These parts operate in seawater and require high corrosion resistance and fatigue strength.
Key Advantages of Our Ring Forgings
1. Exceptional Mechanical Performance
Superior manufacturing processes ensure a continuous distribution of metal fiber flow lines along the circumference, resulting in forged rings with:
Outstanding circumferential strength
High toughness and fatigue resistance
Excellent stress corrosion resistance
Performance is far superior to welded or cast products.
2. High Reliability and Safety
The highly dense and uniform internal structure, with minimal segregation and porosity defects, allows forged rings to withstand enormous static and dynamic impacts. This makes them particularly suitable as critical pressure-bearing components in demanding environments.
3. Large-Diameter & Heavy-Duty Customization
Equipped with ultra-large rolling mills and heat treatment furnaces, we can meet requirements for:
Ultra-large diameter forged rings
Ultra-thick-walled ring forgings
Custom shapes and special steels
We regularly supply custom forged rings up to several meters in diameter for heavy industrial use.
Material Options for Forged Rings
We offer a variety of high-quality alloy steels and special materials tailored to different application environments (high temperature, high pressure, corrosion, heavy load), ensuring forged rings meet stringent operational demands:
High-strength alloy steels:
42CrMo4, 34CrNiMo6 (EN 10250-3, ASTM A668)
Used for wind turbine bearings and heavy machinery slewing rings.
Pressure vessel steels:
ASME SA-508 / SA-105
Used for nuclear and petrochemical pressure components, flanges, and tube sheets.
Stainless steels:
ASTM A182 F316 / F316L
Ideal for marine sealing rings and chemical environments.
Tool & bearing steels:
GCr15
Used for rolling bearing inner/outer rings and wheel hoops.
All materials are traceable with full MTC certificates available.
Inspection Standards & Quality Assurance
Our ring forgings strictly adhere to international quality systems and inspection standards:
Standards
API
ASME B16.5 / B16.47
EN 10250
ASTM A668
Non-Destructive Testing (NDT)
All forged rings undergo 100% inspection:
Ultrasonic Testing (UT):
According to ASTM A388 / EN 10228
Ensures no internal defects such as shrinkage cavities or inclusions.
Magnetic Particle / Penetrant Testing (MT/PT):
Detects surface microcracks.
Mechanical Properties Example (S135 Steel Grade)
Tensile strength: >1034 MPa
Yield strength: >931 MPa
Your Trusted Ring Forgings Supplier
With decades of forging experience, advanced equipment, and strict testing systems, we supply high-performance large ring forgings for industries such as:
Petrochemical
Nuclear & thermal power
Hydropower
Marine & shipbuilding
Heavy machinery
We support custom designs, rapid delivery, third-party inspection, and export packaging.
Contact Us for Custom Forged Rings
If you are looking for a reliable ring forging supplier, we can provide engineered solutions according to your drawings and technical requirements.
📌 Custom sizes available
📌 Small to extra-large diameters
📌 OEM / ODM service welcomed
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