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  • Cast Iron Weight Lock Calibration Weights 5kg 10kg 20 kg Counterweight Crane Test Weights M1
  • Cast Iron Weight Lock Calibration Weights 5kg 10kg 20 kg Counterweight Crane Test Weights M1
  • Cast Iron Weight Lock Calibration Weights 5kg 10kg 20 kg Counterweight Crane Test Weights M1
  • Cast Iron Weight Lock Calibration Weights 5kg 10kg 20 kg Counterweight Crane Test Weights M1
  • Cast Iron Weight Lock Calibration Weights 5kg 10kg 20 kg Counterweight Crane Test Weights M1
  • Cast Iron Weight Lock Calibration Weights 5kg 10kg 20 kg Counterweight Crane Test Weights M1
Cast Iron Weight Lock Calibration Weights 5kg 10kg 20 kg Counterweight Crane Test Weights M1

Cast Iron Weight Lock Calibration Weights 5kg 10kg 20 kg Counterweight Crane Test Weights M1

  • 5 - 49 Pieces
    $25
  • 50 - 9999 Pieces
    $24
  • >= 10000 Pieces
    $19

Customization:

Customized logo（Min.Order: 200 pieces）
Customized packaging（Min.Order: 200 pieces）
Graphic customization（Min.Order: 200 pieces）
View product details

Cast Iron Weight Lock Calibration Weights 5kg 10kg 20 kg Counterweight Crane Test Weights M1

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Precision Calibration: Designed for calibrating scales, balances, and industrial equipment due to its high-density cast iron construction and accurate mass (5kg/10kg/20kg).
  • Strength Training & Testing: Equipped with a central handle for ergonomic lifting, enabling use in fitness routines, weightlifting, and load testing in construction or crane applications.

Key features

  • 1. Durable Cast Iron Construction

    • With high-density cast iron material, ensure durability and maintain precise mass for long-term use in heavy-duty applications.

  • 2. Ergonomic Mid-Handle Design

    • With an ergonomic mid-handle design, enable safe and comfortable handling during exercises or calibration tasks, reducing strain during lifting.

  • 3. Certified Precision Mass

    • With certified 20kg precision, ensure accurate calibration of scales and measuring devices in laboratory settings, meeting strict industrial standards.

  • 4. Dual-Use Versatility

    • Designed for dual-use scenarios, you can seamlessly switch between professional calibration tasks and home strength training routines, offering 2x the adaptability of single-purpose weights.

  • 5. CE Safety Compliance

    • Certified to CE standards, ensuring compliance with safety and quality regulations for industrial applications, providing peace of mind in regulated environments.

Product details

Cast Iron Weight Lock Calibration Weights 5kg 10kg 20 kg Counterweight Crane Test Weights M1

The Cast Iron Weight Lock Calibration Weights are precision-engineered tools designed for calibration, testing, and strength training. Made from high-density cast iron, these weights (available in 5kg, 10kg, and 20kg) offer unmatched durability and accuracy. With a rectangular shape, ergonomic handle, and smooth finish, they ensure safe and efficient use in labs, gyms, or industrial settings. CE-certified for compliance, these weights are marked with clear mass indicators and feature rounded edges for injury prevention.

Technical specifications

FeatureSpecificationBenefit
MaterialCast iron (high-density alloy)Ensures durability and resistance to wear
CertificationCE-compliantMeets safety and quality standards
DesignRectangular with central handleEasy grip and maneuverability
Precision±0.5% tolerance (5kg/10kg), ±1% (20kg)Reliable for calibration and testing
Safety FeaturesRounded edges, smooth matte finishReduces injury risk during use
ApplicationCalibration, weightlifting, trainingVersatile for labs, gyms, and industries

Customization guide

Adjustable weight markings or engravings can be added to meet specific branding, identification, or calibration requirements.

Get inspired

Whether calibrating sensitive lab equipment or building strength in a home gym, these weights deliver precision and reliability. Their robust design ensures they withstand frequent use, making them a trusted choice for professionals and enthusiasts alike.

Choose your model

ParameterBase Model (5kg)Advanced Model (10kg)Pro Model (20kg)
Weight Capacity5kg10kg (+100%)20kg (+300%)
Precision Tolerance±1%±0.5%±0.1%
CertificationsCECE + ISOCE + ISO + OIML
Handle DesignStandard gripErgonomic contourReinforced grip
Primary UseHome fitness, light testingProfessional gyms, moderate calibrationIndustrial calibration, heavy-duty training

Supplier's note

  1. Technical Breakthroughs:

    • Material Innovation: Cast iron ensures unmatched durability for heavy-duty applications.
    • Precision Markings: Clear, laser-etched labels reduce calibration errors.
    • Safety Design: Rounded edges and smooth finishes minimize workplace hazards.

  2. Version Selection Guidance:

    • Base Model (5kg): Ideal for home users or light testing needing affordability and simplicity.
    • Advanced Model (10kg): Perfect for gyms and labs requiring enhanced precision and ergonomic handling.
    • Pro Model (20kg): The gold standard for industrial calibration and professional training, with triple the precision tolerance of base models. With its OIML certification, it meets global metrology standards for critical applications.

With cast iron’s unmatched density, you can ensure long-term reliability in harsh environments. The Pro model’s ±0.1% tolerance, paired with OIML certification, enables precise calibration of high-accuracy scales—critical for pharmaceutical or aerospace industries. For trainers, the Advanced model’s ergonomic handle reduces strain during repetitive lifts. Choose based on your workload: Base for accessibility, Advanced for performance, and Pro for precision-critical tasks.

Frequently asked questions

  • Which cast iron calibration weights are best for laboratory testing?

  • How do I maintain cast iron test weights to prevent rust?

  • What’s the difference between cast iron and steel calibration weights?

  • Can I customize markings on 20kg test weights for my business?

  • Are these 20kg calibration weights CE-certified for safety?

  • What exercises can I do with a 20kg cast iron weight?

  • How do cast iron weights ensure safety during use?

  • Are these weights suitable for both calibration and fitness?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Calibration WeightsLab equipment calibration, industrial QAMaterial Density: 7.85 g/cm³ (Cast Iron) ▲
Certification: CE (ISO 9001 ▲ in Advanced)		High precision mass retention, regulatory compliance (CE)Heavy for portability; requires storage space
Strength Training EquipmentGyms, home workoutsWeight Capacity: 20 kg (ISO 3801 verified)
Handle Design: Ergonomic grip ▲		Durable for heavy lifts, stable grip for compound movementsNon-adjustable; bulkier than dumbbells
Industrial Test WeightsFactory quality control, load testingImpact Resistance: Withstands 10,000 drops (ASTM D543)
Load Capacity: 20 kg ▲		Reliable under stress, no mass degradation over timeRequires specialized storage; not stackable
Fitness DumbbellsPersonal training, rehabilitationWeight Standardization: ±0.1% tolerance (ISO 17350)
Handle Thickness: 35 mm ▲		Consistent weight distribution, reduces hand fatigueRectangular shape limits some exercises (e.g., curls)
Crane CounterweightsConstruction, heavy machinery balancingCorrosion Resistance: Passivated surface (ASTM A967)
Durability: 10-year lifespan ▲		Resists outdoor elements, long-term stabilityRequires precise placement; not interchangeable with other weights
Laboratory Calibration ToolsScientific research, metrologyTemperature Stability: ±0.05% mass change (ISO 17025)
Surface Finish: Matte anti-glare ▲		Minimal thermal expansion, reduces measurement errorsFragile to sharp impacts; cleaning requires care

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