Welded low carbon steel cylinders are used for storing and transporting low-pressure liquefiable
gases. They are commonly used in domestic, commercial, and small industrial applications.
Steel cylinders are produced from low carbon steel and provide durability for their usage. The
size of the steel cylinder allows easy transportation of the same.
To guarantee the safety of the steel cylinders, BIS Certification is important. According to IS
7142: 1995, the manufacture of these gas cylinders is supposed to comply with the required
quality standards. The certification includes testing for pressure resistance, dimensional
accuracy, material quality, leakage, and more. In addition to this, inspections are carried out at
each manufacturing stage. Manufacturers are required to obtain the product certification for sale
in India.
What is IS 7142: 1995?
This is the Indian Standard for welded low-carbon steel cylinders used for storing low-pressure
liquefiable gases with a water capacity not exceeding 5 litres. It mentions certain criteria, such
as design, that ensure the cylinders can safely withstand pressure conditions. As per the BIS
(Bureau of Indian Standards), gas cylinders are:
- Checked for hydrostatic pressure resistance
- Inspected for dimensional accuracy
- Evaluated for weld strength
- Tested for leakage
Low Pressure Gas Cylinders BIS License Eligibility
BIS authorisation under IS 7142: 1995 is required for businesses involved in manufacturing,
importing, or supplying Small Capacity Gas Cylinders in India.
Applicable to:
- Manufacturers (India) - Must get BIS approval if the products are covered under QCO.
- Foreign Manufacturers - Need certification to export Welded Steel Cylinders to India.
- Importers/Brand Owners - Must ensure that the products are BIS-certified before sale.
- Sellers/Distributors - Should only sell certified Low-Pressure Liquefied Gas Cylinders.
Testing and Inspection Requirements
To ensure the safety of welded low carbon steel cylinders used for storing low-pressure
liquefiable gases, the Bureau of Indian Standards outlines the minimum requirements under IS
7142: 1995. This certification ensures that manufacturers meet the standards for cylinder design
and performance.The BIS testing parameters and quality checks for the liquefiable gas cylinder are listed below:
BIS Approval Process for Steel Gas Cylinder
The BIS Authorisation process ensures that the 5-litre gas cylinder meets 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 dimensional accuracy, mechanical strength, and overall material performance.
- 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 units to verify the production process, safety measures, and quality control system.
- Grant of BIS License: If all the above requirements are satisfactorily met, BIS grants the certification license under Scheme-I.
- Use of ISI Mark: Once approved, the manufacturer can affix the ISI mark on the product with a CM/L number, confirming that the product meets BIS standards.
checklist for IS 7142 :1995 approval documents list
| Document Category | Documents Required |
|---|
| Basic Details | GST Certificate, Email ID & Contact Number, Factory & Office Address, Rent Agreement / Lease Deed (if applicable),Partnership Deed (if applicable for partnership firms) |
| Manufacturing Details | List of Machinery, Process Flow Chart, Factory Layout Plan |
| Raw Material Details | List of Raw Materials, Supplier Details, Raw Material Invoices, Raw Material Test Certificates |
| Testing & Quality Control | List of Testing Equipment, Calibration Certificates, QC/Lab In-charge Appointment Letter & Qualification |
| Production Details | Annual Installed Capacity, Last Year Production Value |
| Product & Packaging Details | Quantity per Package, Nature of Packing, Product Printing / Marking Details |
| Management Details | Top Management Details, BIS Communication Contact Person |
| Brand & Certification Documents | Trademark / Brand Certificate, Consent Letter from BIS Recognized Laboratory |
| Additional Documents | Weekly Off Details, Hygiene Document (if applicable), Relaxation Letter (if applicable), Any Other Relevant Document |
| Foreign Manufacturer Requirement | Appointment of Authorized Indian Representative (AIR) for BIS coordination and compliance in India |
Foreign manufacturers are required to appoint an Authorized Indian Representative (AIR) in India. This person is the local point of contact for the Bureau of Indian Standards (BIS) and takes care of all rules and compliance work in India.
Marking Requirements & License Validity
Marking Requirements
After the BIS approval, the ISI Mark for Small Capacity Gas Cylinders must be clearly and
permanently marked on its packaging or on the product. Along with the ISI Mark, important
details such as the manufacturer’s identification and licence number (CM/L) are required. This
ensures the product complies with all safety and performance standards. More details are
mentioned below:
| Requirement | Details |
|---|
| ISI Mark | Indicates that the product is BIS certified and conforms to standards |
| Standard Number | IS 7142 : 1995 |
| 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.
Validity for welded steel cylinders BIS License
| 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 |
fee structure for low carbon steel cylinder BIS License
The cost of BIS Approval for Non-Pressure Sewerage Pipes 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.
- The marking fee is determined based on the product category and production volume (MSME benefits may apply).
- Testing charges are paid directly to BIS-recognised laboratories.
- Consultancy fees vary depending on product type and factory location.
Conclusion
Welded low carbon steel cylinders with small water capacity are an important part of safe gas
storage. The cylinders must be certified under IS 7142: 1995 set by the Bureau of Indian
Standards. Certified gas cylinders can help lower the risk of leakage and pressure-related
incidents during transportation or usage.
The low-pressure gas cylinder companies seeking BIS certification often take guidance from
experts to manage the process. EVTL India assists the manufacturers with documentation,
coordination of testing requirements and much more. This will help in ensuring that there is less
or no delay in the entire process of certification.
