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The Bureau of Indian Standards (BIS) has issued the IS 513 which is the quality benchmark of the cold reduced low carbon steel sheets and strips used in the manufacturing of industrial and structures. These sheets support critical sectors like automotive, construction, appliance manufacturing and fabrication. To legally sell or distribute these products in India manufacturers must obtain the ISI mark certification under IS 513.
Cold reduced low carbon steel sheets are processed using cold rolling methods. The goal is to produce steel that is smoother, stronger, and more precise in thickness. These sheets:
When made to meet IS 513 standards, they maintain consistency in mechanical properties, chemical composition, and dimensional accuracy.
To ensure the calibre of cold reduced steel, India has mandated use of ISI mark Certification under IS 513 on specific grades and applications cold reduced steel. This move helps in:
BIS regulates this requirement and may take action if products are sold without certification.
IS 513 divides cold-reduced carbon steel sheets and strips into various grades and designations. They are segregated based on the application. These include:
Grade Designation |
Usage Type |
CR1 to CR5 |
General purpose to deep drawing |
HR1 to HR4 |
Structural and pressure applications |
D, DD, EDD |
Drawing, deep drawing, and extra deep drawing |
Each grade has a unique chemical composition and mechanical strength requirement. BIS only certifies products that meet the standards laid out under each of these designations.
The certification is mandatory for both domestic and foreign manufacturers if they wish to sell or supply cold reduced low carbon steel sheets in India. This includes:
Certification must be obtained for each manufacturing location. Products made without ISI mark or sold without certification violate BIS norms.
BIS ISI Certification for Mild Steel Wire IS 280:2006
To apply for the ISI mark under IS 513. You need to submit the following documents:
BIS officials will inspect the facility before approval.
This is the step by step ISI mark certification process as per IS 513:
The manufacturer submits Form V, documents, and fees to BIS.
The factory is audited to the detail by BIS. They regulate check-compliance testing setup and manufacturing regulation
Sample sheets are drawn by BIS officers and sent to BIS-approved labs. Tests include chemical, tensile, elongation, and dimension analysis.
If everything is as per the IS 513 requirements. BIS grants the certification. The manufacturer can now use the ISI mark with the unique license number.
BIS also makes annual surveillance audits. Continuous compliance can be done through random sampling and trial again
The first ISI mark license in IS 513 is only valid in 1 year. It has to be renewed. In order to so, the licensee shall:
Delays in renewal can cause suspension or cancellation of the license.
BIS ISI Certification for Galvanized Steel Sheets IS 277:2003
If a product falls under the mandatory ISI scheme and is sold without proper certification:
Manufacturers and importers must ensure full compliance to avoid disruption in business operations.
ISI certification under IS 513 helps your business in more ways than just legal compliance:
If you plan to grow your operations in steel or allied sectors, the IS 513 certification offers credibility.
To legally sell or distribute cold reduced low carbon steel sheets in India, the IS 513 BIS ISI mark certification is non-negotiable. It assures quality, performance, and reliability to customers. If you’re looking to stay ahead of compliance and improve your credibility, start your certification process now—because safety, trust, and growth all begin with standards.
Let Agile Regulatory handle the compliance while you focus on production.
Nishi Chawla
14 Oct, 2025
Nishi Chawla
14 Oct, 2025
Nishi Chawla
13 Oct, 2025
Nishi Chawla
13 Oct, 2025
Nishi Chawla
07 Oct, 2025
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