IS 7285 (Part 2)
Refillable Seamless steel gas cylinders Part 2 Quenched and tempered steel cylinders with tensile strength less than 1100 MPa (112 kgf/mm2)
Summry
Refillable seamless steel gas cylinders are pressure vessels made from high-quality steel, designed to store and transport gases such as LPG safely. They are manufactured without welds, ensuring uniform strength and durability. These cylinders can be refilled multiple times and are widely used in households, industries, and commercial applications
Why BIS Certificate is Mandatory for Refillable Seamless steel gas cylinders Part 2 Quenched and tempered steel cylinders with tensile strength less than 1100 MPa (112 kgf/mm2)?
BIS certification is mandatory for refillable seamless steel gas cylinders to ensure safety and prevent accidents. It confirms compliance with Indian Standards for design, material quality, pressure resistance, and leak-proof performance. This protects users from explosions, gas leaks, and substandard products while ensuring consistent manufacturing quality.
What is BIS Certified for Refillable Seamless steel gas cylinders Part 2 Quenched and tempered steel cylinders with tensile strength less than 1100 MPa (112 kgf/mm2)?
The BIS certified specification for refillable seamless steel gas cylinders is defined under IS 7285. It specifies the material, seamless construction, mechanical strength, hydraulic testing, and leak-proof requirements. Compliance ensures the cylinders meet safety standards for domestic and industrial gas storage and transportation in India.
Test required For Refillable Seamless steel gas cylinders Part 2 Quenched and tempered steel cylinders with tensile strength less than 1100 MPa (112 kgf/mm2)
MATERIAL
| Title | Mandatory/Optional |
|---|---|
| Steel | Optional |
| Material for neck ring and foot ring | Optional |
DESIGN
| Title | Mandatory/Optional |
|---|---|
| Neck Design | Required |
| Valve Fittings | Required |
| Foot Ring | Required |
| Neck Ring and Cap | Required |
MANUFACTURE
| Title | Mandatory/Optional |
|---|---|
| General | Required |
| Wall thickness | Required |
| Surface defects | Required |
| Ultrasonic Examination | Required |
| Out - of - roundness | Required |
| Mean Diameter | Required |
| Straightness | Required |
| Verticality | Required |
| Stabilityp | Required |
| Water Capacity | Required |
| Neck Thread | Required |
TYPE APPROVAL PROCEDURE
| Title | Mandatory/Optional |
|---|---|
| Hydraulic Bursting Test | Required |
| Tensile Test | Required |
| Impact Test | Required |
| Bend Test or Flattening test | Required |
| Pressure Cycling Test | Required |
| Base Check (For Cylinder Made from Tube or made from Continuously Cast Billets) | Required |
BATCH TESTS
| Title | Mandatory/Optional |
|---|---|
| Tensile Test | Required |
| Impact Test | Required |
| Bend Test | Required |
| Hydraulic Bursting Tes | Required |
| Pressure Cycling Test for CNG/Bio-CNG Cylinders | Required |
TEST ON EVERY CYLINDER
| Title | Mandatory/Optional |
|---|---|
| Hydrostatic Stretch Test | Required |
| Hardness Test | Required |
| Leakage Test | Required |
| Water Capacity Check | Required |
| Colour Identification | Required |
| Cylinder Marking | -- |
| Preparation for despatch | -- |
Benefits of BIS Certification for Refillable Seamless steel gas cylinders Part 2 Quenched and tempered steel cylinders with tensile strength less than 1100 MPa (112 kgf/mm2)
1. Safety Assurance BIS certification guarantees that gas cylinders meet strict quality and strength standards, reducing the risk of explosions, leaks, and accidents.
2. Material and Construction Quality Certified cylinders use approved steel grades and seamless construction, ensuring durability, corrosion resistance, and reliable performance under pressure.
3. Regulatory Compliance BIS marking ensures compliance with Indian law, allowing manufacturers and importers to sell legally and avoiding penalties or product rejection.
4. Consumer Confidence Users can trust BIS-certified cylinders for safe handling, storage, and refilling, enhancing brand credibility and market acceptance.
5. Standardized Testing and Performance Certified cylinders undergo hydraulic, leak, and strength testing, ensuring uniform quality, consistent dimensions, and long service life.