BIS Certification for Hot-Dip Zinc-Aluminium-Magnesium Alloy-Coated Steel Sheets, Plates, And Strips IS 18513

 In the modern industrial landscape, durability and corrosion resistance of steel products are critical factors that define their performance and longevity.


Hot-dip zinc-aluminium-magnesium alloy-coated steel sheets, plates, and strips have emerged as superior materials widely used in construction, automotive, appliances, and infrastructure projects due to their enhanced corrosion protection. To ensure that these products meet stringent quality and safety standards, the Bureau of Indian Standards (BIS) mandates certification under IS 18513.

In this blog, we explore the significance of BIS certification for hot-dip zinc-aluminium-magnesium alloy-coated steel products, the certification process, benefits, and why compliance is essential for manufacturers and importers in India.

What is IS 18513?

IS 18513 is the Indian Standard specification that defines the requirements for hot-dip zinc-aluminium-magnesium alloy-coated steel sheets, plates, and strips. This standard focuses on:

  • Chemical Composition of the coating alloy, specifying the proportions of zinc, aluminium, and magnesium.

  • Coating Thickness ensuring adequate corrosion protection.

  • Mechanical Properties including tensile strength and elongation.

  • Surface Quality and finish.

  • Testing Methods for verifying compliance.

IS 18513 ensures that these steel products provide superior corrosion resistance, especially in harsh environmental conditions, compared to traditional zinc-coated steel.

Why Is BIS Certification Mandatory Under IS 18513?

Legal Compliance

The Indian government requires BIS certification for hot-dip zinc-aluminium-magnesium alloy-coated steel products to ensure that only products meeting national quality standards enter the market. Selling uncertified products can lead to penalties and product recalls.

Assured Quality and Safety

BIS certification guarantees that steel products conform to IS 18513, ensuring consistent quality, durability, and safety for end-users.

Market Acceptance

Certified products enjoy greater trust from consumers, builders, and industries, boosting marketability and acceptance in government and private tenders.

Who Needs BIS Certification for IS 18513?

  • Manufacturers producing hot-dip zinc-aluminium-magnesium alloy-coated steel sheets, plates, and strips within India.

  • Importers bringing these coated steel products into the Indian market.

  • Distributors and Traders who handle and sell certified steel products.

BIS Certification Process for IS 18513

Step 1: Application Submission

Manufacturers or importers apply to BIS with technical details, manufacturing processes, and product samples.

Step 2: Testing and Evaluation

Samples are tested in BIS-approved laboratories for chemical composition, coating thickness, mechanical properties, and surface finish.

Step 3: Factory Inspection

BIS officials conduct an on-site inspection of manufacturing facilities to verify quality control measures and production consistency.

Step 4: Certification Grant

On passing tests and inspections, BIS issues the certification license permitting use of the BIS mark on products.

Step 5: Surveillance

Periodic inspections and product testing ensure ongoing compliance and quality.

Benefits of BIS Certification for IS 18513 Products

  • Legal Market Access: Certified products can be legally sold across India.

  • Quality Assurance: Ensures products meet international and national corrosion resistance benchmarks.

  • Customer Confidence: Enhances trust and preference among buyers and specifiers.

  • Competitive Advantage: Certified products gain an edge in tenders and contracts.

  • Long-Term Business Growth: Compliance builds brand reputation and facilitates expansion.

Conclusion

For manufacturers, importers, and distributors of hot-dip zinc-aluminium-magnesium alloy-coated steel sheets, plates, and strips, securing BIS certification under IS 18513 is crucial. It not only ensures legal compliance but also guarantees product quality, safety, and market acceptance. The BIS certification process, though rigorous, is an investment in credibility and long-term success in India’s growing steel industry.


If you are seeking to enter the Indian market or want to ensure your products meet BIS standards, beginning the certification process early and working with experienced consultants can smooth the way to compliance.

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