M1 Class 20kg 25kg Heavy-Duty Cast Iron Weights 20kg Weights Locking
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| Warranty: | 1 Year |
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Basic Info.
- Model NO.
- AFM
- Structure
- Electronic Scale
- Display Type
- LCD
- Sensor
- Digital Scale
- Installation
- Customizable
- Automation
- Automation
- The Weighing Method
- Static Truck Scale
- Scale Structure
- Steel
- Operating Environment
- Outdoor
- Lightning Protection
- With Lightning Protection
- Transport
- Customizable Package
- Dimension
- 35.00cm * 35.00cm * 35.00cm
- Certification
- CE, ISO
- Production
- Test Weight
- Shape
- Rectangle
- Transport Package
- Wooden Box Package
- Specification
- AFM
- Trademark
- WTWS
- Origin
- Qingdao, Shandong, China
- HS Code
- 8423891090
- Production Capacity
- 5000pieces/Year
Packaging & Delivery
- Package Size
- 38.00cm * 33.00cm * 21.00cm
- Package Gross Weight
- 10.000kg
- Lead Time
-
10 days (1 - 10 Pieces)
To be negotiated ( > 10 Pieces)
Product Description
Weighing weights: The core benchmark tool for precise measurement
In industrial production, scientific research experiments, commercial trade and other fields, precise measurement is a crucial link for ensuring quality, fairness and safety. Weighing weights, as the standard measuring instrument for weight, have always played an indispensable role. Through standardized weight specifications, they provide calibration basis for various weighing devices such as electronic scales, platform scales, floor scales and balances, ensuring that every weight measurement conforms to national or international measurement standards, and is the core carrier for achieving "accurate value transmission".
product classification
Weight Grading Choice
1. For balances with a sensitivity of one ten-millionth, choose E2 grade non-magnetic stainless steel weights.
2. For balances with a sensitivity of one thousandth, choose either E2 grade or F1 grade non-magnetic stainless steel weights.
3. For balances with a sensitivity of one hundredth, choose F1 grade non-magnetic stainless steel weights.
4. For balances with a sensitivity of one tenth, choose F2 grade non-magnetic stainless steel weights.
5. For balances with a sensitivity of one ten-thousandth, choose M1 grade stainless steel weights or steel-plated chromium weights.
Constant Metal Products
6. For electronic scales or floor scales weighing more than 50kg, choose cast iron weights.
2. For balances with a sensitivity of one thousandth, choose either E2 grade or F1 grade non-magnetic stainless steel weights.
3. For balances with a sensitivity of one hundredth, choose F1 grade non-magnetic stainless steel weights.
4. For balances with a sensitivity of one tenth, choose F2 grade non-magnetic stainless steel weights.
5. For balances with a sensitivity of one ten-thousandth, choose M1 grade stainless steel weights or steel-plated chromium weights.
Constant Metal Products
6. For electronic scales or floor scales weighing more than 50kg, choose cast iron weights.
Classified by accuracy level (in accordance with the international OIML standard):
E1 grade: Highest accuracy, error ≤ ±0.1mg (for gram-level weights), only used for benchmark calibration at national metrology institutes, made of platinum-iridium alloy, to be stored in an environment with constant temperature (20 ± 2℃) and constant humidity (45%-65%).
E2 grade: High accuracy, error ≤ ±0.5mg (for gram-level weights), suitable for calibration of laboratory analytical balances and precision electronic scales, made of non-magnetic stainless steel, with surface roughness ≤ 0.8μm.
F1 grade: Medium-high accuracy, error ≤ ±2mg (for gram-level weights), used for industrial precision weighing equipment (such as precious metal processing scales, electronic balances), made of stainless steel, can be used in general industrial environments (temperature - 10℃ - 40℃).
F2 grade: Medium accuracy, error ≤ ±10mg (for gram-level weights), suitable for commercial trade and ordinary industrial scale calibration, made of chrome-plated cast iron or stainless steel, with good cost-effectiveness.
M1 grade: Basic accuracy, error ≤ ±50mg (for gram-level weights), used for calibration of daily weighing equipment, made of cast iron, affordable price, suitable for high-frequency usage scenarios.
E2 grade: High accuracy, error ≤ ±0.5mg (for gram-level weights), suitable for calibration of laboratory analytical balances and precision electronic scales, made of non-magnetic stainless steel, with surface roughness ≤ 0.8μm.
F1 grade: Medium-high accuracy, error ≤ ±2mg (for gram-level weights), used for industrial precision weighing equipment (such as precious metal processing scales, electronic balances), made of stainless steel, can be used in general industrial environments (temperature - 10℃ - 40℃).
F2 grade: Medium accuracy, error ≤ ±10mg (for gram-level weights), suitable for commercial trade and ordinary industrial scale calibration, made of chrome-plated cast iron or stainless steel, with good cost-effectiveness.
M1 grade: Basic accuracy, error ≤ ±50mg (for gram-level weights), used for calibration of daily weighing equipment, made of cast iron, affordable price, suitable for high-frequency usage scenarios.
Core material: Key factor affecting accuracy and lifespan
Different materials of weights have significant differences in terms of precision stability, corrosion resistance, and applicable environments. When choosing, it is necessary to consider the usage scenario:
1. Platinum-Iridium Alloy (90% platinum + 10% iridium):
Advantages: High density (21.5g/cm³), low thermal expansion coefficient (1.3×10/℃), extremely strong chemical stability, no oxidation or deformation over a long period of use, and it is the only material for E1 grade reference weights
Limitations: Expensive (much more than gold), only used for the highest level of measurement calibration, rarely used in daily scenarios
Advantages: High density (21.5g/cm³), low thermal expansion coefficient (1.3×10/℃), extremely strong chemical stability, no oxidation or deformation over a long period of use, and it is the only material for E1 grade reference weights
Limitations: Expensive (much more than gold), only used for the highest level of measurement calibration, rarely used in daily scenarios
2. Non-magnetic Stainless Steel (316L/304)
Advantages: Non-magnetic (avoiding electromagnetic interference affecting accuracy), resistant to acid and alkali corrosion (can be used in humid or slightly chemically contaminated environments, such as food processing workshops), smooth surface and easy cleaning, mainstream material for E2 grade and F1 grade weights
Applicable scenarios: Laboratories, medicine, food, chemical industries, etc., which have high requirements for cleanliness and anti-magnetic properties
Applicable scenarios: Laboratories, medicine, food, chemical industries, etc., which have high requirements for cleanliness and anti-magnetic properties
3. Ordinary Stainless Steel (201):
Advantages: Lower cost than 316L, high hardness (HV≥200), wear-resistant, good rust prevention after chrome plating on the surface, commonly used material for F2 grade weights
Applicable scenarios: Ordinary industrial workshops, commercial retail (such as supermarkets, hardware stores), avoiding long-term exposure to strong acid and alkali environments
Advantages: Lower cost than 316L, high hardness (HV≥200), wear-resistant, good rust prevention after chrome plating on the surface, commonly used material for F2 grade weights
Applicable scenarios: Ordinary industrial workshops, commercial retail (such as supermarkets, hardware stores), avoiding long-term exposure to strong acid and alkali environments
4. Cast Iron (Gray Cast Iron / Spheroidal Cast Iron)
Advantages: Moderate density (7.2g/cm³), low cost, capable of casting large weight specifications (such as ton-level weights), surface chrome plating or painting can enhance rust resistance, main material for M1 grade and ton-level weights
Applicable scenarios: Heavy industry (such as logistics weighbridges, construction materials weighing), low-precision calibration in daily use, regular inspection of surface coating for peeling.
5. Brass:
Advantages: Uniform texture, easy processing, surface can be polished to a mirror effect, often used for gram-level small weights (such as teaching laboratory weights)
Limitations: Prone to oxidation (surface forms copper green), poor precision stability, requires regular polishing maintenance over a long period of use.
Advantages: Moderate density (7.2g/cm³), low cost, capable of casting large weight specifications (such as ton-level weights), surface chrome plating or painting can enhance rust resistance, main material for M1 grade and ton-level weights
Applicable scenarios: Heavy industry (such as logistics weighbridges, construction materials weighing), low-precision calibration in daily use, regular inspection of surface coating for peeling.
5. Brass:
Advantages: Uniform texture, easy processing, surface can be polished to a mirror effect, often used for gram-level small weights (such as teaching laboratory weights)
Limitations: Prone to oxidation (surface forms copper green), poor precision stability, requires regular polishing maintenance over a long period of use.
Product Parameter
OIML Weight Specification Grade Table
grade/weight | E1 ±mg | E2 ±mg | F1 ±mg | F2 ±mg | M1 ±mg | M2 ±mg | M3 ±mg |
50kg | 25 | 75 | 250 | 750 | 2500 | 7500 | 25000 |
20kg | 10 | 30 | 100 | 300 | 1000 | 3000 | 10000 |
10kg | 5 | 16 | 50 | 160 | 500 | 1500 | 5000 |
5kg | 2.5 | 8 | 25 | 80 | 250 | 750 | 2500 |
2kg | 1 | 3 | 10 | 30 | 100 | 300 | 1000 |
1kg | 0.5 | 1.6 | 5 | 16 | 50 | 150 | 500 |
500g | 0.25 | 0.8 | 2.5 | 8 | 25 | 75 | 250 |
200g | 0.1 | 0.3 | 1 | 3 | 10 | 30 | 100 |
100g | 0.05 | 0.16 | 0.5 | 1.6 | 5 | 15 | 50 |
50g | 0.03 | 0.1 | 0.3 | 1 | 3 | 10 | 30 |
20g | 0.025 | 0.08 | 0.25 | 0.8 | 2.5 | 8 | 25 |
10g | 0.02 | 0.06 | 0.2 | 0.6 | 2 | 6 | 20 |
5g | 0.015 | 0.05 | 0.16 | 0.5 | 1.6 | 5 | 15 |
2g | 0.012 | 0.04 | 0.12 | 0.4 | 1.2 | 4 | 12 |
1g | 0.01 | 0.03 | 0.1 | 0.3 | 1 | 3 | 10 |
500mg | 0.008 | 0.025 | 0.08 | 0.25 | 0.8 | 2.5 | - |
200mg | 0.006 | 0.02 | 0.06 | 0.2 | 0.6 | 2 | - |
100mg | 0.005 | 0.015 | 0.05 | 0.16 | 0.5 | 1.5 | - |
50mg | 0.004 | 0.012 | 0.04 | 0.12 | 0.4 | - | - |
20mg | 0.003 | 0.01 | 0.03 | 0.1 | 0.3 | - | - |
10mg | 0.002 | 0.008 | 0.025 | 0.08 | 0.25 | - | - |
5mg | 0.002 | 0.006 | 0.02 | 0.06 | 0.2 | - | - |
2mg | 0.002 | 0.006 | 0.02 | 0.06 | 0.2 | - | - |
1mg | 0.002 | 0.006 | 0.02 | 0.06 | 0.2 | - | - |
FAQ
1. Is it necessary to buy weights when purchasing an industrial electronic scale?
An industrial electronic scale is a device used to weigh objects. To ensure its accuracy during use, it is advisable to calibrate it with weights at intervals, such as once a month or a quarter. This can guarantee the accuracy of the weighing results of the weighing equipment.
2. What material are weights usually made of?
Weights used to calibrate truck scales or platform scales are generally made of cast iron. Stainless steel weights are also available, which have higher accuracy.
3. How to choose the accuracy of weights?
For electronic scales or truck scales over 50kg, cast iron weights are recommended. For other accuracy grades, please refer to the parameter table.
4. How should weights be stored to ensure long-term use?
Focus on preventing moisture, collision, rust, and strictly prohibit contact with corrosive substances to ensure the accuracy of the weights themselves.
5. Can weights be customized?
WTWS supports customization of weight sizes, etc., and can also add custom logos, slogans, etc.
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