BIS Certification for Cold Rolled Non-oriented Electrical Steel Sheets And Strip-fully Processed Type (CRNO) IS 648

Cold Rolled Non-oriented Electrical Steel Sheets and Strip-fully Processed Type (CRNO) are critical materials used in the manufacturing of electrical devices such as transformers, motors, and generators. These steel sheets are specially processed to have uniform magnetic properties in all directions, which enhances the efficiency of magnetic flux within electrical machines. The cold rolling process provides a smooth surface finish and tight dimensional tolerances, improving the performance and reliability of the electrical components. CRNO steel sheets are valued for their high permeability, low core loss, and excellent electrical conductivity, making them essential for energy-efficient and high-performance electrical applications.

Importance of BIS Certification

BIS certification is necessary for Cold Rolled Non-oriented Electrical Steel Sheets and Strip-fully Processed Type (CRNO) to ensure they meet stringent quality and safety standards set by the Bureau of Indian Standards. This certification guarantees that CRNO sheets possess the required magnetic properties, dimensional accuracy, and electrical performance critical for their use in electrical machinery. Adhering to BIS standards ensures the reliability and efficiency of transformers, motors, and generators, enhancing their operational lifespan and energy efficiency. Compliance with BIS certification fosters consumer trust, supports regulatory alignment, and promotes the use of high-quality materials in the electrical industry, thereby contributing to safer and more efficient electrical infrastructure.

Indian Standard IS 648:2006

As per the latest Quality Control Order (QCO) issued by the Ministry of Steel, Government of India, on 5th February 2024, Cold Rolled Non-oriented Electrical Steel Sheets and Strip-fully Processed Type (CRNO) must adhere to the Indian Standard IS 648:2006. This standard ensures that CRNO sheets and strips meet essential quality and safety criteria, including the required magnetic properties, dimensional accuracy, and electrical performance. Compliance with IS 648:2006 guarantees that these materials are manufactured to precise specifications, ensuring their reliability and efficiency in applications such as transformers, motors, and generators. Adhering to this standard is crucial for manufacturers to align with regulatory guidelines, maintain product consistency, and foster consumer trust in the quality and performance of electrical steel products.

Key highlights

Product Name	Cold Rolled Non-oriented Electrical Steel Sheets And Strip-fully Processed Type (CRNO)
Applicable Indian Standard	IS 648:2006
Applicable Certification Scheme	Product Certification Scheme (ISI Mark Scheme) Scheme 1 - Schedule 2
Compliance Requirement	Mandatory
QCO Link	BIS Certification for Cold Rolled Non-oriented Electrical Steel Sheets And Strip-fully Processed Type (CRNO)
Scope as per Standard	This standard covers the requirement for non-oriented electrical steel with silicon content up to 3.5 percent, cold rolled, both insulated and uninsulated, fully processed electrical steel and strip primarily intended for static and rotating machines operating at power frequencies. This standard defines grades of cold rolled non-oriented electrical steel sheet and strip in nominal thicknesses of 0.35 mm, 0.5 mm, 0.65 mm and 1.00 mm. If required and agreed to between the purchaser and the manufacturer, the typical, physical and mechanical properties of the steel sheets/strips shall be supplied by the manufacturer to the purchaser.

Tests

The following are the major tests for Textiles - Polypropylene (PP) Woven, Laminated, Block Bottom Valve Sacks for Packaging of 50 kg Cement.

Condition of Delivery
Surface Condition
Magnetization Test
Core loss
Surface Insulation Characteristics

BIS Certification for Cold Rolled Non-oriented Electrical Steel Sheets And Strip-fully Processed Type (CRNO)

NOTE:

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Procedure for Domestic Manufacturer
Procedure for Foreign Manufacturer

Timeline for BIS Certification

The approximate timeline to obtain BIS certification for Cold Rolled Non-oriented Electrical Steel Sheets And Strip-fully Processed Type (CRNO) to use the ISI mark as per IS 648:2006 is as follows:

For Indian Manufacturers (Standard Timeframe – 30 days)
For Foreign Manufacturers (Standard Timeframe – 180 days)

Conclusion:

In conclusion, BIS certification is vital for ensuring that CRNO sheets meet the stringent quality and safety standards set by the Bureau of Indian Standards, guaranteeing the necessary magnetic properties, dimensional accuracy, and electrical performance. Compliance with BIS standards enhances the reliability and efficiency of electrical components, fosters consumer trust, and supports the development of safer and more efficient electrical infrastructure. Adhering to Indian Standard IS 648:2006, as mandated by the latest Quality Control Order (QCO) from the Ministry of Steel, Government of India, ensures that these materials are manufactured to precise specifications and maintain product consistency.

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