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GB 33147-2025: Liquefied dimethyl ether steel gas cylinders
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GB 33147: Evolution and historical versions
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Liquefied dimethyl ether steel gas cylinders
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| GB/T 33147-2016 | English | 375 |
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Liquefied dimethyl ether cylinders
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Standard similar to GB 33147-2025 GB/T 33215 | GB/T 33145 | GB/T 33215 | GB/T 20663 | Basic data | Standard ID | GB 33147-2025 (GB33147-2025) | | Description (Translated English) | Liquefied dimethyl ether steel gas cylinders | | Sector / Industry | National Standard | | Classification of Chinese Standard | J74 | | Classification of International Standard | 23.020.30 | | Word Count Estimation | 27,225 | | Date of Issue | 2025-12-02 | | Date of Implementation | 2026-07-01 | | Older Standard (superseded by this standard) | GB/T 33147-2016 | | Issuing agency(ies) | State Administration for Market Regulation, Standardization Administration of China | GB 33147-2025: Liquefied dimethyl ether steel gas cylinders---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 23.020.30
CCSJ74
National Standards of the People's Republic of China
Replaces GB/T 33147-2016
Liquefied dimethyl ether cylinders
Published on 2025-12-02
Implemented on July 1, 2026
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
Table of contents
Preface III
1.Scope 1
2 Normative References 1
3.Terms and Definitions 1
4 Symbols 2
5.Cylinder Type 2
5.1 Method for Representing Cylinder Model Numbers 2
5.2 Cylinder Model and Parameters 3
5.3 Cylinder Structure Types 3
6.Materials 4
6.1 General Provisions 4
6.2 Chemical composition 4
6.3 Mechanical Properties 5
7 Design 5
7.1 General Provisions 5
7.2 Calculation of Bottle Wall Thickness 5
7.3 Appendix 6
8 Manufacturing 6
8.1 Head 6
8.2 Cylinder 6
8.3 Assembly 7
8.4 Welding 7
8.5 Heat Treatment 8
9.Testing and Inspection Requirements 8.
9.1 Radiographic Inspection of Welds 8
9.2 Individual Inspection 9
9.3 Batch Inspection 9
9.4 Pressure Cyclic Test 13
9.5 Repeatability Test 13
9.6 Type Testing 13
9.7 Factory inspection and type test items 14
10 Marking, coating, packaging, storage and transportation, and factory documentation 15
10.1 Mark 15
10.2 Apply 15g
10.3 Packaging, Storage and Transportation 15
10.4 Public website and factory documents 15
Appendix A (Normative) Steel Cylinder Stamp Markings 17
Appendix B (Informative) Product Certificate Format 18
Appendix C (Informative) Quality Certificate Format 20
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents".
Drafting.
This document replaces GB/T 33147-2016 "Liquefied Dimethyl Ether Cylinders". Compared with GB/T 33147-2016, the main differences are structural adjustments and rewriting.
Aside from the logical changes, the main technical changes are as follows.
a) The modification number has been changed from Roman letters to Chinese capital characters (see 5.1,.2016 version 5.1);
b) The cylinder model has been changed (see 5.2,.2016 version 5.2), adding the model parameter "permitted filling volume" and the indoor placement of the cylinder.
Requirements (see 5.2);
c) Detailed requirements for the chemical composition of the main material of the gas cylinder have been added (see 6.2);
d) The requirement for the yield strength ratio of the main body material of the gas cylinder has been changed (see 6.3.2, 6.2.2 in the.2016 version);
e) Added requirements for design document verification (see 7.1.1);
f) The requirements for the assembly form of the head and shell have been changed (see 7.1.2, 7.1.1 in the.2016 version);
g) A minimum nominal wall thickness requirement has been added (see 7.2.5);
h) The requirement for consistency between the material of the protective cover and base and the cylindrical body material has been added (see 7.3.2);
i) The requirements for the cylinder valve seat specifications have been changed (see 7.3.4, 7.3.4 in the.2016 version), and requirements for the cylinder valve seat dimensions have been added (see...).
7.3.4);
j) The requirements for the execution standards of welding procedure qualification have been added (see 8.4.1.1);
k) Requirements for heat treatment equipment, process qualification, and requalification have been added (see 8.5);
l) Increased the sampling quantity requirements for X-ray inspection (see 9.1.3);
m) Added requirements for the confirmation of the hydrostatic test results of steel cylinders by the steel cylinder supervision and inspection agency (see 9.2.2.3);
(n) The requirement for the number of airtightness tests has been changed (see 9.2.3.2,.2016 version 9.2.3.2);
o) The quantity requirements for the inspection batch size of gas cylinders have been changed (see 9.3.1.2,.2016 version of 9.3.1.2);
p) The requirement for the ratio of the cylinder material mandrel diameter to the actual test sample thickness has been changed (see 9.3.3.5, 9.3.3.3.2 in the.2016 version);
q) The requirements for hydraulic burst pressure and volumetric deformation rate have been changed (see 9.3.4,.2016 version 9.3.4);
r) Added batch size, weight, and volume inspection requirements (see 9.3.5, 9.3.6);
s) Added requirements for testing, verification, and recording of electronic identification tags (see 9.3.7 and 10.1.7);
t) Added pressure cycling test requirements (see 9.4);
u) Added type test items and sampling requirements (see 9.6), and changed the requirements for re-conducting type tests (see 9.6,.2016 edition).
(9.6)
v) Added the requirement that the character "液" (liquid) be embossed inside the upper end cap of the liquid chromatography bottle (see 10.1.2), and changed the position requirements for the end cap marking (see...).
10.1.2 (8.1.2 in the.2016 version);
w) The requirement for the depth of the stamped lettering has been increased (see 10.1.3);
x) Added requirements for unique bottle numbers and a cylinder traceability system (see 10.1.4, 10.1.5);
y) Added requirements for the establishment and maintenance of the official website for the traceability information of steel cylinder products of manufacturing units (see 10.4.1);
z) Added requirements for factory-issued electronic identification markings (see 10.4.2).
Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.
This document was proposed and is under the jurisdiction of the State Administration for Market Regulation.
This document was first published in.2016, and this is its first revision.
Liquefied dimethyl ether cylinders
1 Scope
This document specifies the type, materials, design, manufacture, testing and inspection, marking, and packaging of liquefied dimethyl ether cylinders (hereinafter referred to as "cylinders").
Requirements for packaging, coating, storage and transportation, design life and factory documentation.
This document applies to applications used under normal ambient temperatures (-40℃ to 60℃), with a nominal working pressure of 1.6 MPa and a nominal volume not exceeding [specific value missing].
Welded steel cylinders with a capacity of 150L or more, capable of repeatedly holding liquefied dimethyl ether conforming to GB/T 25035.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
GB/T 150.3 Pressure Vessels - Part 3.Design
GB/T 222 Permissible Deviations in Chemical Composition of Finished Steel and Alloy Products
GB/T 228.1 Metallic materials – Tensile testing – Part 1.Test method at room temperature
GB/T 1804 General tolerances - Tolerances for linear and angular dimensions without specified tolerances
GB/T 2651 Destructive testing of welds in metallic materials - Transverse tensile test
GB/T 2653 Test method for bending of welded joints
GB/T 6653 Steel plates and strips for welding gas cylinders
GB/T 8335 Gas Cylinder Threads
GB/T 9251 Gas Cylinder Hydrostatic Test Method
GB/T 9252 Pressure Cyclic Test Method for Gas Cylinders
GB/T 12137 Test Method for Air Tightness of Gas Cylinders
GB/T 13005 Gas Cylinder Terminology
GB/T 15385 Test method for hydraulic bursting of gas cylinders
GB/T 17925 X-ray digital imaging inspection of butt welds on gas cylinders
GB/T 25035 Dimethyl ether for town gas
GB 33146 Liquefied dimethyl ether bottle valve
GB/T 33209 Welding Procedure Qualification for Welded Gas Cylinders
GB/T 45439 Technical Specification for the Application of Traceability QR Codes for Gas Cylinders and Gas Cylinder Valves
NB/T 47013.2 Non-destructive testing of pressure equipment - Part 2.Radiographic testing
TSG23 Gas Cylinder Safety Technical Regulations
3 Terms and Definitions
The terms and definitions defined in GB/T 13005 and the following terms and definitions apply to this document.
3.1
Allowable filling weight
The maximum permissible weight of liquefied dimethyl ether to be filled.
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