Credentials
Approved, certified and specified by industry leaders
The approvals behind our instruments, and some of the companies who rely on them.
Certifications and approvals
Quality you can verify
ISO 9001:2015 based quality system
Design, manufacture and supply are managed on the principles of the ISO 9001:2015 quality management system.
Enlisted with EIL
Sigma is an enlisted vendor with Engineers India Limited, India's leading engineering consultancy for process plants.
IBR certification
Products for boiler and steam service can be supplied with Indian Boiler Regulations certification.
CE mark
Products can carry the CE mark under the Pressure Equipment Directive or Sound Engineering Practice.
Recognised and approved
Sigma products are recognised and approved by leading domestic and international companies, consultants and end users, and our customers return with repeat orders.
Exported worldwide
- United States
- Europe
- Middle East
- Asia Pacific
Some of our patrons
Specified by owners, consultants and contractors
A selection of the organisations that use Sigma instruments in their plants and projects.
- Adani
- BHEL
- BPCL
- CPCL
- EIL
- GAIL
- HPCL
- IFFCO
- IOCL
- L&T
- MIAL
- NPCIL
- NTPC
- ONGC
- PGCIL
- Reliance
- TATA
- Technip
- Toyo
Request a quote
Tell us your process conditions. We will recommend the right instrument.
Share the fluid, pressure, temperature, range and connections you need, and our engineers will come back with a solution and a quotation.
