High strength deformed steel bars and wires are commonly used for concrete reinforcement in construction projects where enhanced structural strength and durability are required. These specialized steel products are engineered to withstand higher loads and stresses, making them ideal for reinforcing concrete elements subjected to heavy loads or harsh environmental conditions.
High strength deformed steel bars, often referred to as HSDB or rebar, are characterized by surface deformations such as ribs or indentations that provide mechanical anchorage and bond strength with concrete. These bars are strategically placed within concrete forms before pouring to distribute loads evenly and increase the tensile strength of the structure. They are commonly used in various structural elements such as beams, columns, slabs and foundations, ensuring the structural integrity and resilience of concrete elements.
Similarly, high strength deformed steel wires, known for their high tensile strength, yield strength and ductility, are utilized in concrete reinforcement applications. These wires are commonly used in pre-stressed concrete elements, wire mesh reinforcement, suspension cables and tie wires in construction projects. They provide additional strength, flexibility and durability to reinforced concrete structures, helping to control cracking and improve overall structural performance.
All high strength deformed steel bars and wires for concrete reinforcement have been included in the mandatory ISI Certification Scheme under IS 1786:2008.
This standard outlines the criteria for deformed steel bars and wires intended for reinforcing concrete structures, categorized into the following strength grades:
Indian Standards Institute, or ISI was renamed the Bureau of Indian Standards (BIS) in 1987. The official mark that the Bureau of Indian Standards provides for manufacturers of various goods is the ISI Mark. It is used to indicate compliance with Indian standards (IS) set by the Bureau of Indian Standards (BIS) and has been used as a conformity marking for industrial products. Manufacturers received permission from BIS to use the ISI Mark on items that comply with relevant Indian requirements through the product certification program.
Only manufacturers (domestic or foreign) who produce the finished product will be awarded ISI Certification. This will not be given to any product importers, traders, dealers, or distributors.
The following documentation is required to get an ISI certification:
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There are two approaches for Indian manufacturers to become certified with the ISI Mark:
Regular Procedure
With the possible exception of cases deemed "All India first," which might take up to 180 days, the licensing procedure is expected to be finished in 120 days. This timeline starts on the day the application is received, assuming that at different points in time the documentation, unit assessment, and product conformance are all deemed acceptable.
Step 1: Manufacturing Unit Customization in Compliance with Applicable Indian Standards
Step 2: Submission of the Application Form
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Simplified Procedure
This is a much faster process than the standard procedure. After a factory inspection is deemed satisfactory and the initial evaluation establishes that the sample complies with the applicable Indian Standard(s), the license application process is expected to be finished in 30 days.
Step 1: Adapting the Manufacturing Unit to Comply with the Relevant Indian Standard
Step 2: Sample Testing
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The process of obtaining ISI Mark Certification for Foreign Manufacturers typically includes the following steps:
Step 1: Application
Step 2: Query Raised (If Any)
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Brand Liaison provides helpful support for achieving ISI Mark Certification. Among our offerings are:
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