BIS CERTIFICATION FOR GAS WELDING EQUIPMENT IS 6901

Published Date: Nov 20, 2025 4 min Read

BIS Certification is mandatory for Pressure Regulators for Gas Cylinders used in welding, cutting, and allied processes as per IS 6901:2018. This standard defines the specifications and safety requirements for regulators designed for gas cylinders with pressures up to 300 bar. Pressure regulators are critical safety components that control and reduce the high pressure of compressed gases to a usable level during welding, cutting, heating, and other allied processes. Their performance and reliability directly impact operator safety, process efficiency, and equipment durability.

IS 6901:2018 – Gas Welding Equipment: Pressure Regulators for Gas Cylinders

This Indian Standard lays down the requirements for the design, materials, construction, performance, and testing of pressure regulators. It applies to regulators used with oxygen, acetylene, LPG, hydrogen, and other industrial gases. The scope includes both single-stage and two-stage regulators that reduce high cylinder pressure to the required working pressure in a controlled and safe manner. The standard specifies requirements for regulator body strength, pressure-reducing mechanism, gauges, safety devices, and connection fittings. It also ensures compatibility with cylinders and prevention of leaks, backflow, or pressure surges. Dimensional requirements are included to facilitate interchangeability and safe connections across different manufacturers. Stringent testing ensures that pressure regulators comply with all performance and safety requirements. Tests include verification of pressure reduction accuracy, flow stability, resistance to leakage, endurance under cyclic loading, and safety valve operation. Regulators are also subjected to burst pressure and strength tests to ensure they can withstand extreme conditions without failure. These tests confirm reliability in industrial environments where regulators are exposed to frequent usage and varying gas pressures.

Benefits of BIS Certification for Gas Welding Equipment

BIS certification under IS 6901:2018 assures that pressure regulators are safe, durable, and compliant with national standards. For manufacturers, it establishes credibility, ensures regulatory compliance, and enhances acceptance in domestic and export markets. Certified regulators also reduce liability risks and boost confidence among customers. For industries and end-users, the use of certified regulators minimizes the risk of gas leaks, explosions, and operational failures. Certified regulators ensure consistent gas flow, stable pressure, and longer equipment life, thereby improving welding quality, operational safety, and overall productivity. In critical industries such as fabrication, construction, shipbuilding, and automotive manufacturing, the reliability of certified regulators translates directly into workplace safety and cost efficiency.

Key highlights

Product Name	Gas welding equipment - Pressure regulators for gas cylinders used in welding, cutting and allied processes up to 300 bar
Applicable Indian Standard	IS 6901:2018
Applicable Certification Scheme	Product Certification Scheme (ISI Mark Scheme) Scheme 1 - Schedule 2
Compliance Requirement	Mandatory
Quality Control Order	-
Scope as per Standard	This International Standard specifies requirements for single or two-stage pressure regulators for connections of gas cylinders normally used for compressed gases up to 300 bar (30 MPa), for dissolved acetylene, or liquefied petroleum gases (LPG). methylacetylene-propadiene-mixtures (MPS) and cart on dioxide (CO.) used in welding, cutting and allied processes.

Note

For Detailed Information about the Procedure for BIS ISI Certification, Visit :

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Procedure for Domestic Manufacturer
Procedure for Foreign Manufacturer

Timeline for BIS Certification

The timeframe for obtaining BIS certification depends on whether the manufacturer is Indian or foreign:

For Indian Manufacturers – The certification process generally takes about 30 days under normal conditions.
For Foreign Manufacturers – The process usually takes around 180 days, due to additional inspections, sample testing, and regulatory compliances.

Conclusion

BIS certification for Pressure Regulators under IS 6901:2018 plays a vital role in ensuring safety, performance, and durability in welding and cutting operations. By meeting the stringent requirements of this standard, manufacturers demonstrate their commitment to delivering high-quality products that protect users and enhance process efficiency. For end-users, certified regulators provide assurance of compliance, safety, and reliability in demanding industrial applications.
Partner with Aleph INDIA for expert assistance and complete end-to-end support in obtaining BIS certification for Gas Welding Equipment – Pressure Regulators for Gas Cylinders under IS 6901:2018, ensuring smooth compliance, market recognition, and customer trust.