IS 7285:2017 is the Indian Standard (BIS) for lpg cylinders — specification. 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.
Overview
Status Current
Usage level Specialized
Domain MEP — Special Structures
Type Specification International equivalents
Also on InfraLens for IS 7285
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.
Frequently referenced clauses
Cl. 3 — Types: 14.2 kg (domestic) and 19 kg, 47.5 kg (commercial)
Cl. 4 — Material requirements (low carbon steel, IS 2062)
Cl. 5 — Design and dimensions
Cl. 6 — Manufacturing — welding requirements
Cl. 7 — Testing — hydraulic, burst, fire, drop tests
Cl. 8 — Periodic requalification (every 10 years)
LPG cylinder gas cylinder pressure vessel welded cylinder cooking gas
International Equivalents Similar International Standards
ISO 22991:2004 ISO
High Current
Gas cylinders — Transportable refillable welded steel cylinders for LPG
Both cover welded steel LPG cylinders with similar design, testing, and requalification requirements.
Key Differences
≠ IS 7285 specifies sizes common in India (14.2 kg, 19 kg, 47.5 kg). ISO covers a broader range of sizes used internationally.
Key Similarities
≈ Both require hydrostatic burst testing, fire testing, and periodic requalification with similar safety factors.
Parameter Comparison
Parameter IS Value International Source
⚠ Verify details from original standards before use Report Error
Key Values5 Quick Reference Values
14.2 kg cylinder water capacity 33.3 litres
Design pressure 16.87 kg/cm²
Test pressure (hydraulic) 26 kg/cm²
Min wall thickness 2.4 mm
Requalification interval Every 10 years
Tables & Referenced Sections Key Tables
Table 1 — Cylinder dimensions and capacities
Table 2 — Minimum wall thickness
Table 3 — Test pressure requirements
Frequently Asked Questions2 How often should LPG cylinders be tested? + Every 10 years from the date of manufacture. The test date is stamped on the cylinder shroud. Cylinders failing requalification are scrapped.
What is the actual weight of gas in a domestic LPG cylinder? + 14.2 kg of LPG gas. The empty cylinder (tare weight) is about 15-16 kg. Total filled weight is approximately 29-30 kg.
QA/QC Inspection Templates 📋
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