custom cast iron weights
Our custom cast iron weight plates are precision-cast for commercial gyms, fitness equipment brands, and sports retailers worldwide. Available in weights from 1.25kg to 50kg, with standard 25mm and Olympic 50mm bore options to fit all major barbell systems. Each plate can be custom cast with your brand logo, weight value, and surface finish, making them ideal for OEM gym equipment manufacturers and private label fitness brands. Full OEM, ODM, and OBM support with low MOQ and sample production available.
*Provide your application requirements—such as stress conditions, materials, size range, and even product name. We are always available for customization, so please contact us directly.
Introduction
Why Choose Our Cast Iron Weight Plates?
Accurate Weight Tolerance — Each plate is cast and finished to ±1% weight accuracy, ensuring consistent loading across sets and compliance with commercial gym equipment standards.
Standard & Olympic Bore Available — 25mm standard bore fits most home and commercial barbells, while 50mm Olympic bore is compatible with all professional Olympic barbell systems. Custom bore sizes are also available on request.
Custom Logo & Branding — Your brand name, logo, and weight denomination can be cast directly into the plate surface during production, delivering a clean, permanent finish without additional labeling costs.
Multiple Surface Finish Options — Black lacquer, epoxy coating, and raw cast iron finishes available. Rubber-coated and chrome-edged variants also supported for premium gym equipment lines.
Durable Grey Iron Construction — High-grade grey iron ensures dimensional stability, consistent density, and long service life under repeated drop and rack loading in commercial environments.
Specifications
Category Specifications & Details Product Name Custom Cast Iron Weights Scope of Services • Custom Mass Manufacturing (5kg to 5000kg+)
• OEM/ODM Weight Casting
• Standard Calibration (OIML M1, M2, M3)
• Load Testing Solutions
• Precision Weight AdjustmentMaterials • Grey Cast Iron (HT200, HT250, HT300)
• Ductile Iron (QT450, QT500)
• High-Density Alloy CastingsMachining Capabilities • Precision Sand Casting & Shell Molding
• CNC Milling & Turning for Adjustment Cavities
• Surface Grinding for Flatness
• Drilling & Tapping for Lifting Eyes/Handles
• Boring and Lathe MachiningTarget Industries • Metrology & Calibration Services
• Elevator & Escalator Maintenance
• Crane & Hoist Load Testing
• Logistics & Warehouse Scales
• Marine & Port Heavy-Duty Testing
• Construction & Civil EngineeringSurface Treatment • Anti-Rust Primer & Epoxy Painting (Black, Grey, Red, Yellow)
• Industrial Powder Coating (High Durability)
• Bituminous Coating (Corrosion Resistance for Marine use)
• Hot-Dip Galvanizing (Optional)
• Sand-Blasting for Surface UniformityInspection & Quality Control • High-Capacity Mass Comparators
• CMM (Coordinate Measuring Machine)
• Spectrometer for Material Composition
• Ultrasonic Flaw Detection (Internal Void Check)
• Hardness & Roughness TestersOur Advantages • High Precision: Tight tolerance control meeting OIML/ASTM standards.
• Structural Stability: Artificial aging treatment to prevent weight drift.
• User-Centric Design: Stackable interlocking shapes & Forklift-ready slots.
• Full Traceability: Serialized weights with individual calibration reports.
• Global Logistics: Optimized packaging for sea and air freight.
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Let’s talk about your next project !
I don't have complete drawings, can I send inquiry?
Yes, we can help you analyze based on your description, samples and photos.
I am not sure if you can do my parts?
Most of our customers come to us because “others say they can’t do it”.
Are you a factory or a trader?
We are a factory and have a project management team that can handle the technology, cost and delivery at the same time.
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