GB 5100-1994 Welded steel gas cylinders
In this standard, the international standard ISO 4706:1989 Refillable welded steel gas cylinders is adopted for welded steel gas cylinders with water volume no larger than 150L, albeit in a non-equivalent fashion.
1 Subject content and application scope
This standard specifies the basic parameters, technical requirements, test methods, inspection rules, marking, packing, transport, storage, etc. of welded steel gas cylinders "hereinafter referred to as "steel cylinders").
This standard is applicable to steel cylinders designed for the repeated filling of low-pressure liquefied gas or dissolved gas, which are used under normal environment temperature (-40℃~60℃), with hydraulic test pressure no greater than 7.5MPa (gauge pressure) and nominal volume of 10L~1,000L.
This standard is also applicable to steel cylinders used for the repeated filling of industrial liquefied petroleum gases specified in GB 11174.
2 Normative references
GB 228 Metallic materials - Tensile testing
GB 232 Metallic materials - Bend test
GB 1804 Tolerances and fits - Limit deviations of dimensions without individual tolerance indications
GB 2106 Metallic materials - Charpy (V-notch) impact test
GB 4159 Metallic low temperature - Charpy impact test method
GB 6397 Metallic materials - Test pieces for tensile testing
GB 7144 Coloured cylinder mark for gases
GB 8335 Special threads for gas cylinders
GB 8337 Fusible plug for gas cylinders
GB 9251 Method for hydraulic test of gas cylinders
GB 11174 Liquefied petroleum gases
GB 12137 Method for leakage test of gas cylinders
GB/T 13005 Terminology of gas cylinders
GB 15385 Method for hydraulic burst test of gas cylinders
JB 4730 Nondestructive testing of pressure vessels
3 Terms and symbols
3.1 Terms
batch
specified quantity of steel cylinders produced continuously with the same design, material with the same designation, welding procedure and heat treatment process
3.2 Symbols
a——Gap between head curve and sample plate, mm;Akv——Impact absorbing energy, J;
b——Butt misalignment of weld, mm;
c——Unevenness of head surface, mm;
D——Nominal diameter of steel cylinder, mm;
d——Diameter of bending axis used for the bend test, mm;
Di——Inside diameter of steel cylinder, mm;
Do——Outside diameter of steel cylinder, mm;
E——Edge angle height of butt weld, mm;
e——Difference between the maximum and minimum diameters of the cylindrical part of the cylinder on the same cross section, mm;
h——Straight side height of the head, mm;
Hi——Convex height in the head, mm;
K——Shape factor of the head;
L——Length of the cylinder body (including the height of head at both ends), mm;
l——Length of the sample plate, mm;
n——Ratio of bending axis diameter to specimen thickness;
P——Nominal working pressure, MPa;
1 Subject content and application scope
2 Normative references
3 Terms and symbols
4 Basic parameters
5 Technical requirements
6 Test methods
7 Inspection rules
8 Marking, packing, transport and storage
9 Delivery documents
Annex A (Informative) Product certificate
Annex B (Informative) Quality certificate for batch inspection
Additional explanation
