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- It specifies the quality standards of High Tensile Strength Flat Rolled steel used in the manufacture of welded gas cylinders.
- The standard specifies the chemical composition, mechanical strength and weldability of the product.
- The standard also mandates tensile, bend and impact tests on the sample.
- BIS certification is a safety measure and acts as a deterrent to the presence of substandard steel in the market.
- Enables safe manufacturing of LPG and industrial gas cylinders.
Introduction
Gas cylinders are made steel is the only metal that can withstand high pressure and hard service conditions. IS 15914:2011 defines the features of high tensile strength flat rolled steel plate, sheet, and strip up to 6 mm primarily for welded gas cylinders. The standard is set for uniform mechanical strength, good weldability, and controlled chemical composition. The government, by making BIS certification mandatory, is thus vetting the steel that goes into the gas-cylinder manufacturing chain for safety and compliance only. Bureau of Indian Standards
What is IS 15914:2011?
IS 15914:2011 is the Indian Standard that defines the quality and performance requirements for high tensile strength flat rolled steel (up to 6 mm) used in welded gas cylinders.It states the steel must have sufficient strength, a tightly controlled chemical composition, and good weldability for the safe working of high internal pressures. This standard is the source of the mandatory BIS certification for manufacturers supplying steel for LPG and industrial gas cylinders.
Key Points:
- Gives the details of the steel plates, sheets, and strips up to 6 mm that are used in welded gas cylinders.
- Mechanically, the material is subjected to very strict strength, ductility, and weldability requirements.
- The standard provides the chemical composition limits of the material to guarantee safe and reliable performance.
- The standard requires the performance of tensile, impact, bend, and flattening tests. ISI MARK
- The standard is under a mandatory BIS certification regime for the safety of cylinder manufacturing.
Why is BIS Certification Mandatory
BIS Certification is essential to guarantee that the steel used for welded gas cylinders is of high quality and safe. The certification system is required to avoid the insertion of such materials that are not safe in the supply chain and also to make sure that national standards are met in high-pressure applications.
Key Points:
- Confirms that the steel abides by IS 15914:2011 safety and performance standards.
- Avoids the selling of substandard or dangerous materials.
- Enhances the safety of the public by lessening the risks of cylinder rupture.
- Quality Control Orders (QCOs) by the Government are the means through which the enforcement takes place.
- Creates a system of mutual trust and shared responsibility between manufacturers and suppliers.
Importance and Benefits of BIS Certification
| Importance | Benefits |
| Ensures steel quality and safety for gas cylinders | Builds customer and regulator confidence |
| Prevents entry of substandard or unsafe materials | Enhances brand credibility and market acceptance |
| Maintains uniform manufacturing standards | Supports smoother approvals and compliance |
| Mandatory under government QCOs | Avoids legal penalties and market restrictions |
| Protects public health and property | Ensures long-term product reliability and fewer failures |
Step-by-Step Process of BIS Certification
Step1:Documentation
- Collect required business and product documents
- Ensure compliance with BIS standards
- Prepare technical files and product details
- Verify authenticity of all submitted records
Step2:Product Testing
- Send product samples to a BIS-recognized lab
- Conduct tests as per relevant Indian Standards (IS)
- Obtain an official test report
- Fix issues if the product fails and retest
Step3:Application Submission
- Fill out the BIS registration form online
- Upload documents and test reports
- Pay the required government fees
- Track application status on the BIS portal
Step4:Scrutiny and Inspection
- BIS reviews documents and test reports
- Factory inspection may be conducted (if applicable)
- Clarifications or additional documents may be requested
- Compliance is verified before approval
Step5:Grant of License
- BIS issues the registration certificate
- Unique R-number or license number is provided
- Manufacturer can affix the BIS mark on products
- Renewal required as per BIS validity timeline
Documents Required for BIS Certification
| Category | Documents Required |
| Business Documents | Business license/registration, ISO certificate, organizational details |
| Manufacturer Details | Factory layout, process flow chart, machinery list, production details |
| Product Documents | Product specifications, component list, user manual, model details |
| Testing Documents | Test report from BIS-recognized lab, sample details, test request form |
| Legal & Compliance | Authorization letter, brand ownership proof, trademark certificate (if any) |
| Import/Foreign Manufacturer (If applicable) | AIR (Authorized Indian Representative) details, contract agreement, overseas manufacturer documents |
Timelines, Costs, Validity & Renewal
- Timelines: The waiting time is usually 20 to 30 days; the testing part is generally 7 to 15 days.
- Costs: The official fees and the testing fees are different for each product. In addition, there may be some extra charges.
- Validity: The validity period is, in most cases, 2 years.
- Renewal: In most cases, it takes place before the expiration date; new documents/tests are required; the renewal period
Why Choose Diligence Certifications
- Expert team with strong BIS and regulatory knowledge
- Fast, streamlined processing to reduce approval delays
- Accurate documentation and testing coordination
- Transparent guidance with clear communication
- High success rate and complete end-to-end support
Conclusion
A BIS Certification to IS 15914:2011 is a guarantee that the steel used in the manufacture of the welded gas cylinders is of a high tensile quality, safe, and without the risk of gas leaks or crackings. The regulation, through its strict requirements on the compositional, mechanical, and welding characteristics, makes it more difficult for inferior or counterfeit products to be available and thus ensures the safety of the public.With the professional assistance from Diligence Certifications, the companies will be able to handle their paperwork, testing, and getting the approval in a very efficient way. In the end, conformity with IS 15914:2011 leads to enhanced confidence and is a guarantee of a safer gas-cylinder ecosystem all over the country.
Frequently Ask Questions
What is IS 15914:2011?
IS 15914:2011 stands for an Indian Standard, which defines the one chemical and mechanical properties, as well as the features of welding, of high tensile strength (up to 6 mm) flat rolled steel for the fabrication of welded gas cylinders.
Why is BIS Certification necessary for steel as per IS 15914:2011?
BIS Certification is necessary in order to make sure that first-rate steel is utilized, and that the safety is observed during the making of LPG and industrial gas cylinders, and as a result, there should not be any failure, leakage, or accidents.
Who is the target audience of the BIS Certification?
Manufacturers of steel plates, sheets, or strips up to six mm in thickness for the fabrication of welded gas cylinders who are willing to sell or supply their products in India are the target audience of BIS Certification.
What tests are conducted as per IS 15914:2011?
Under the mentioned regulation, it is also specified that tests in the areas of tensile tests, bend tests, impact tests, and flattening tests shall be undertaken with the purpose to a prediction of metal behavior under high pressure.
How long does it take to get a BIS Certification?
The total time that is usually taken is around 20 to 30 days, out of which 7 to 15 days are reserved for product testing, and the rest of the time is for documentation and BIS approval.
Which documents are required to obtain a BIS Certification?
The documents being factory registration, process flowchart, factory details, product standards, test reports from labs that are BIS-certified, and authorization letters are among those required.
Is there a factory inspection involved in the certification process?
Yes, factory inspection is planned when the BIS intends to verify production, testing, and quality control before it issues the license, if all of these are found to be satisfactory.
How long is the BIS license valid?
BIS Certification is, in general, valid for two years and after it should be renewed by the submission of the new papers and test reports.
What happens if a product fails a BIS test?
If the product does not fulfill the requirements, the manufacturer is obliged to fix the problem and send back the sample for testing.
Can foreign manufacturers get BIS Certification under IS 15914:2011?
Foreign manufacturers may submit an application only if they designate an Authorized Indian Representative (AIR) and comply with all the BIS instructions as regards documentation and testing.
