This standard specifies basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of welded steel gas cylinders (hereinafter referred to as "cylinders").
This standard is applicable to cylinders used in normal environment temperature of -40℃~60℃, with the hydraulic test pressure not greater than 12MPa (gauge pressure) and the nominal volume of 1 L~1000 L as well as capable of refilling low pressure liquefied gas and its mixture with other compressed gases.
This standard is also applicable to cylinders capable of refilling liquefied petroleum gas for industrial purposes as specified in GB 11174 and the vessel body of dissolved acetylene gas cylinder.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the normative document (including any amendments) applies.
GB 150 Steel Pressure Vessels
GB/T 228 Metallic Materials - Tensile Testing at Ambient Temperature (ISO 6892)
CB/T 229 Metallic Materials - Charpy Pendulum Impact Test Method (ISO 148-1)
GB/T 232 Metallic Materials - Bend Test (ISO 7438)
GB/T 1804 General Tolerances - Tolerances for Linear and Angular Dimensions without Individual Tolerance Indications (ISO 2768)
GB 7144 Coloured Cylinder Mark for Gases
GB 8335 Special Threads for Gas Cylinders
GB/T 9251 Methods for Hydrostatic Test of Gas Cylinders
GB/T 9252 Method for Cycling Test of Gas Cylinders
GB 11174 Liquefied Petroleum Gas
GB/T 12137 Method for Leakage Test of Gas Cylinders
GB/T 13005 Terminology of Gas Cylinders
GB 14193 Rules for Filling of Liquefied Gas Cylinders
GB 15383 Connection Types and Dimensions for Gas Cylinder Valve Outlets
GB 15385 Method for Hydraulic Burst Test of Gas Cylinder
GB 17925 Standard Practice for X-ray Digital Radioscopic Examination of Cylinder Weld
JB/T 4730.1~4730.6 Nondestructive Testing of Pressure Equipment
JJG 14 Verification Regulation of Nonself-indicating Weighing Instrument
3 Terminologies, Definitions and Symbols
3.1 Terminologies and definitions
For the purposes of this document, the terminologies and definitions established in GB/T 13005 and the following apply.
3.1.1
Batch
Quantity limited for cylinders continuously produced with the same design, designation material, welding procedure and heat treatment process.
3.1.2
Main body of the cylinder
The part of cylinder composed of head and shell or two heads.
