Large Size Rolled Rings

Boberry

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High-strength forging: Free-forged rings from 1–7000 kg provide excellent mechanical properties and fatigue resistance.
Large-size capability: Standard outer diameter up to 3000 mm; larger sizes supported via certified subcontractors.
Versatile materials: Carbon steel, alloy steel, and stainless steel grades selected to match load and environment requirements.
Precision machining: More than 20 lathes plus CNC machining ensure accurate dimensions and consistent surface quality.

Item	Specification
Product Name	Large Size Rolled Rings
Materials	Steel, carbon steel, alloy steel, stainless steel (other grades on request)
Outer Diameter Range	Up to 3000 mm standard; larger diameters available via subcontractors
Weight Range	1–7000 kg free-forging ring parts
Process Route	Forging → Rough machining → Heat treatment → Final machining → Inspection
Forging Equipment	5 t electro-hydraulic hammer ×1; 3 t electro-hydraulic hammer ×1; 1 t air hammer ×1; 750 kg air hammer ×2; 560 kg air hammer ×2
Machining Equipment	More than 20 size lathes plus CNC machining, milling, turning, boring, drilling
Heat Treatment Options	Annealing, normalising, quenching & tempering, and Hardening
Nondestructive Testing	Magnetic particle test; Penetration test; Ultrasonic test; Radiographic test; others as required
Supply Capacity	500–1000 tons/month
Delivery Time	30–45 days (depending on size, quantity, and process route)
Packaging	Seaworthy plywood cases or pallets, or as per customer requirement
Main Markets	Europe, US, North America, Asia