IS 7285 specifies requirements for domestic and commercial LPG cylinders. It covers design (14.2 kg, 19 kg, 47.5 kg capacities), material, welding, testing (hydrostatic, burst, fire, drop), and periodic requalification. ISI mark is mandatory for all LPG cylinders sold in India.
Specification for welded low carbon steel cylinders for liquefied petroleum gas (LPG) covering design, materials, manufacturing, testing, and marking requirements.
Key Values
14.2 kg cylinder water capacity33.3 litres
Design pressure16.87 kg/cm²
Test pressure (hydraulic)26 kg/cm²
Practical Notes
! ISI mark on LPG cylinders is MANDATORY — non-ISI cylinders are illegal and dangerous.
! 14.2 kg is the standard domestic cylinder. 47.5 kg is for commercial/industrial use.
! Cylinders must be hydrostatically tested every 10 years and marked with retest date.
! Dents, corrosion, or damaged foot rings are reasons for immediate rejection and return to distributor.