1 Scope
This standard specifies the type, parameter, technical requirements, test method, inspection rules, marking, coating, package, transport and storage of the steel cylinders for the on-board storage of compressed natural gas as a fuel for automotive vehicles (hereinafter referred to as steel cylinder).
This standard is applicable to the design and manufacture of steel cylinder with nominal working pressure of 20MPa (pressure in this standard refers to gauge pressure), nominal water volume of 30 L~300 L, working temperature of -40℃~65℃ and design service life of 15 years.
Steel cylinder manufactured according to this standard is only used for filling compressed natural gas for automotive vehicles which complies with GB 18047, and fixed on the automotive vehicle. Additional load caused by external force is not included in the application condition.
This standard is neither applicable to gas storage cylinders for compressed natural gas filling station nor steel cylinders with welded structure.
2 Normative References
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies. For undated references, the latest edition (including all the amendments) of the normative document applies.
Foreword I
1 Scope
2 Normative References
3 Terms, Definitions and Symbols
4 Type and Parameter
5 Technical Requirements
6 Testing Methods
7 Inspection Rules
8 Marking, Coating, Package, Transport and Storage
9 Installation
10 Product Quality Certificate, Valves Quality Certificate and Batch Quality Inspection Certificate
Appendix A (Normative) Flattening Test Methods
Appendix B (Normative) Sulfide Stress Corrosion Test
Appendix C (Normative) Ultrasonic Test
Appendix D (Normative) Magnetic Particle Test
Appendix E (Normative) Batch Quality Inspection Certificate of Steel Cylinders for the On-board Storage of Compressed Natural Gas as a Fuel for Automotive Vehicles
