How to Choose BIS-Certified Iron Weights for Weighbridge Calibration

Introduction

In the transport and logistics industry, weighbridge calibration isn’t just a technical step — it’s a legal necessity. Weighbridges that are not calibrated properly can lead to massive losses, fines, and rejection by legal authorities.

At Shree Shree Weighing Solutions, we supply BIS-certified iron weights in Ahmedabad and across Gujarat for weighbridge calibration, legal metrology checks, and industrial use.

Here’s what to consider before you invest.

🧱 What Are BIS-Certified Iron Weights?

BIS (Bureau of Indian Standards) certification ensures that the weights conform to IS standards set by the Indian government. These iron weights are:

• Made from high-quality cast iron

• Manufactured to specific tolerance levels (typically M1 or F1 Class)

• Painted or powder-coated to prevent rust

• Stamped (on request) by the Weights & Measures Department

🛠️ Choosing the Right Size & Quantity

When calibrating a weighbridge (capacity: 10–100 tons), you'll typically need:

• Multiple 20 kg, 50 kg, 100 kg, and even 500 kg or 1000 kg blocks

• Enough weights to simulate full-load testing

• A transportation method (trolley or forklift) for heavy blocks

Tip: You can also rent weights from authorized suppliers for one-time calibration if purchasing a full set isn’t feasible.

📝 Legal Requirements

For commercial or public-use weighbridges in Gujarat, legal metrology authorities require:

• Calibration using certified weights

• Traceable documentation

• A sealed stamp post-verification

• Annual re-verification using certified weights

Our iron weights are accepted by:

• RTOs

• Municipal Weighing Authorities

• Private weighbridge operators

🚚 Where Are They Used?

We supply iron calibration weights to:

• Industrial weighbridges in Changodar, Sanand, Vatva

• Logistics hubs in Rajkot and Surat

• Manufacturing plants in Vadodara and Bhavnagar

• Transport agencies across Gujarat