Mild Steel and Medium Tensile Steel Bars are used for concrete reinforcement. Such steel bars
are very common in civil and structural engineering works. These bars offer great strength to
concrete structures. Steel bars have wide usage in buildings, bridges, dams, foundations, and
other constructions where load-bearing capacity is essential. Their ability to bond effectively with
concrete makes the steel bars a reliable choice during construction.
The Bureau of Indian Standards outlines the requirements of steel bars under IS 432 (Part 1):
1982. The criteria include the minimum requirement in terms of mechanical strength,
dimensional accuracy, surface condition, and uniformity of mild steel bars. Manufacturers
complying with this standard ensure that the reinforcement steel delivers the required strength
and performance in concrete structures.
What is IS 432 (Part 1): 1982?
This is the Indian Standard for tensile steel bars used for concrete reinforcement, which defines
requirements for mechanical properties and surface quality of the product. This standard is set
by the BIS (Bureau of Indian Standards) to ensure that product quality and safety are met, and
the bars are
- Made with premium quality steel grades.
- Ensured to meet dimensional accuracy.
- Designed to provide strong bonding with concrete structures .
- Tested for yield strength and elongation properties.
Eligibility Criteria for Tensile Steel Bars License
BIS authorisation under IS 432 (Part 1): 1982 is required for businesses involved in
manufacturing, importing, or supplying Mild Steel Bars for Concrete Reinforcement in India.
Applicable to:
- Manufacturers (India): Must get BIS authorisation if the steel bars are covered under
QCO.
- Foreign Manufacturers - Need certification to export the steel bars to India.
- Importers/Brand Owners - Must ensure that the products are BIS certified before
selling.
- Sellers/Distributors - Should only sell certified steel bars for RCC structures.
Testing and Inspection Requirements
To ensure the quality, safety needs, and adequate performance of construction steel bars, the
standard set by the Bureau of Indian Standards (BIS) defines proper testing and inspection
requirements during manufacturing.
Manufacturing & Standards Compliance Tests
- Standard Equivalence Verification (R) - Ensures test methods comply with IS 432
(Part 1) and are technically aligned with ISO 6892 and ISO 10065 standards for tensile
and bend testing.
- Process Conformity Check (R) - Confirms reinforcement steel is manufactured as per
approved hot rolling and processing methods.
- Specification Compliance Review (R) - Ensures all production parameters comply with
IS 432 (Part 1) requirements for mild steel and medium tensile steel bars.
- Production Traceability Verification (R) - Ensures bars can be traced back to the
original cast or batch identification.
Chemical & Material Verification Tests
- Cast Chemical Analysis (R) - Confirms chemical composition of steel as per specified
grades for reinforcement bars.
- Final Product Composition Check (R) - Verifies finished bars meet required chemical
limits after rolling.
- Grade Identification Test (R) - Ensures correct classification of mild steel Grade I,
Grade II, and medium tensile steel.
- Impurity Level Analysis (R) - Ensures harmful impurities remain within permissible BIS
limits.
Mechanical Testing Requirements
- Tensile Strength Test (R) - Conducted as per IS 1608 to determine ultimate tensile
strength, yield strength, and elongation.
- Yield Stress Verification (R) - Ensures material meets minimum yield stress
requirements for structural applications.
- Elongation Test (R) - Measures ductility of steel reinforcement bars.
- Bend Test (R) - Conducted as per IS 1599 to ensure flexibility and resistance to
cracking.
- Retest Procedure Compliance (R) - Ensures repeat testing is performed in case of
initial failure.
Dimensional & Physical Property Tests
- Nominal Size Verification (R) - Ensures bars conform to standard diameters (5 mm to
50 mm range).
- Mass per Meter Check (R) - Confirms weight consistency as per IS 1732 requirements.
- Rolling Tolerance Check (R) - Ensures dimensional consistency during manufacturing.
- Surface Quality Inspection (R) - Ensures bars are free from cracks, lamination, and
surface defects.
How to apply for Medium Tensile Steel Bars BIS License?
The BIS license process ensures that the Nickel-Based Batteries meet the required standards for proper and efficient operation. This process is set by the Bureau of Indian Standards (BIS) and includes the following steps:
- Online Registration:Manufacturers register on the BIS Manak portal by submitting company, factory, and product details. Foreign manufacturers must appoint an Authorized Indian Representative (AIR).
- Testing at BIS-Approved Laboratory: Product samples are tested in BIS-approved laboratories for material safety and structural durability.
- Application Submission:The application is submitted along with test reports, technical documents, and factory details. Foreign manufacturers must also submit AIR-related documents.
- Factory Inspection: BIS officials inspect the manufacturing unit to verify the production process, safety measures, and quality control system.
- Grant of BIS License: If all requirements are met, BIS grants the certification license under Scheme-I.
- Use of ISI Mark:After approval, the manufacturer can use the ISI mark on the product with a CM/L number, confirming that the product meets BIS standards.
Documents List for is 432(Part 1):1982 Permit
The following documents are typically required for obtaining BIS approval:
Basic Details: - GST Certificate
- Email ID, Contact Number
- Factory, Office Address
- Rent and Lease Agreement(if applicable)
- Partnership Deed (if partnership firm)
| Product and Packing Details: - Quantity per Package
- Nature of Packing
- Nature of Printing / Marking on Product
|
Testing and Quality Control: - List of testing Equipment
- Calibration Certificates
- QC or Lab In-charge Appointment Letter
- Qualification
| Raw Material Details: - List of Row Materials
- Supplier Details
- Raw Material Invoices
- Raw Material Test Certificates
|
Manufacturing Details: - List of Machinery
- process flow chart
- Layout plan of Factory
| Brand and Certification Documents: - Trademark / Brand Certificate
- Consent Latter From BIS Recognized Laboratory
|
Production Details: - Annual Installed Capacity
- Last Year Production Value
| Additional Documents: - Weekly Off Details
- Hygiene Documents(if applicable)
- Relaxation Latter(if applicable)
- Any Other Relevant Documents
|
Management Details: - Top Management Details
- Concerned Person for BIS Communication
| Required Documents: - Agreement with AIR
- Aadhaar Card with AIR
- AIR Nomination Form
- Required Undertakings
- Scope of License
|
Foreign manufacturers must additionally appoint an Authorized Indian Representative (AIR) to coordinate with the Bureau of Indian Standards (BIS) and manage compliance requirements in India.
Marking Requirements & License Validity
Marking Requirements
When a manufacturer obtains the BIS license, the ISI mark for steel step bolts must be applied clearly and permanently on the product or its packaging. In addition to the ISI Mark, other important details must also be provided on the product or packaging, as specified in the table below. This ensures the product meets all quality and safety standards. .
| Requirement | Details |
|---|
| ISI Mark | Indicates that the product is BIS certified and conforms to standards |
| Standard Number | IS 432(Part 1): 1982 |
| CML Number | Certification Marks License (CML) number issued by BIS |
| Manufacturer Details | Name of manufacturer or registered trademark |
| Batch / Date | Batch number, heat number, or manufacturing date for traceability |
Note:Marking is typically applied using durable stamping, tagging, or permanent printing to ensure clear identification during handling, storage, and transportation, as per BIS marking requirements.
mild and medium tensile steel bars BIS Licence validity
After obtaining BIS approval for the nickel battery, the license is valid for a fixed period and must be maintained by following BIS rules and standards.
| particulars | Details |
|---|
| Initial Validity | Typically 1 to 2 years, depending on BIS approval conditions |
| Renewal | Must be renewed before expiry by submitting the application along with the prescribed fee and updated documents |
| Surveillane | Includes periodic factory inspections and market sample testing conducted by BIS |
| Compliance | Continuous following to standard and applicable Quality Control Orders (QCOs) is mandatory |
| Risk | Non-compliance or failed sample testing may lead to suspension or cancellation of the BIS license |
Pricing guide for medium and mild tensile steel bar
The cost of BIS compliance for the portable batteries includes charges for application, inspection, license, testing, and marking. These fees are paid to BIS as per Scheme I guidelines.
| Charge Type | Indian Manufacturers | Foreign Manufacturers |
|---|
| Application Fee | INR 1,000 | USD 15 |
| Audit Charges | INR 7,000 | USD 3,200 – 5,900 |
| License Fee | INR 1,000 | USD 15 |
| Marking Fee | As applicable | As applicable |
| Testing Charges | As applicable | As applicable |
| EVTL India Consultancy Fee | As per actual | As per actual |
Note:
- Application fee for foreign manufacturers is payable via SWIFT (SAARC countries may pay in INR with applicable GST).
- Audit charges for foreign manufacturers vary based on country/location.
- Marking fee depends on the product category and production volume (MSME benefits may apply).
- Testing charges are paid directly to BIS-approved laboratories.
- Consultancy fees depend on product type and factory location.
Conclusion
Manufacturers of Mild Steel and Medium Tensile Steel Bars need to adhere to the IS 432 (Part 1): 1982 set by the Bureau of Indian Standards. The Certification helps to ensure that the product satisfies the quality parameters such as tensile strength, yield strength, elongation, dimensional accuracy, and surface quality. BIS certification ensures that the steel bars used in construction are safe to use for building structures.
The manufacturers must get the BIS certification to make their products compliant with Indian laws. Besides, this would be a good way to establish the reputation of the company in the minds of the consumers. Expert help from EVTL India makes the approval process hassle free for manufacturers. They provide documentation, filing the application, testing and compliance advice to help steel bar manufacturers.
