JB/T 4734-2002 in English

This standard specifies the requirements for the design, manufacturing, inspection and acceptance of aluminium welded vessels (including vessels with such components as enclosure made of aluminium or line with aluminium).
1.1 This standard is applicable to the atmospheric pressure vessels and the pressure vessels with design pressure no larger than 8MPa.
1.2 The design temperature range applicable to this standard shall be determined according to the allowable service temperature of aluminium products.
1.3 This standard is not applicable to the following various vessels:
a) Directly-fired vessels;
b) Vessels in the nuclear-energy plant;
c) Compression vessel chambers as the component parts of such motive mechanical equipments with rotation or back and forward motion (such as centrifugal pump shell, cylinder body of reciprocating pump, cylinder body of compressor, cylinder body of refrigerating machine, case of blower, wobbling drum of centrifuge, etc);
d) Frequently-transported vessels;
e) Vessels with internal diameter be less than 150mm (means width, height or diagonal line for the noncircular section, such as the diagonal line of rectangular or the major axis of ellipse);
f) Vessels requiring fatigue analysis.
1.4 For the compression components with structural dimension not being determined by this standard, the following methods may be adopted in the design of these compression components, but they shall be evaluated and approved by the National Technical Committee on Pressure Vessels of Standardization Administration of China:
——Stress analysis, including finite element method;
——Replication experiment analysis (such as experimental stress analysis and replication hydraulic pressure test);
——Comparison empirical design by sing such comparable structures that have been in service.

Foreword I
1 Scope
2 Normative References
3 General
4 Materials
5 Internal Pressure Cylinder and Internal Pressure Spherical Shell
6 External Pressure Cylinder and External Pressure Spherical Shell
7 Head
8 Opening and Opening Reinforcement
9 Flange
10 Manufacturing, Inspection and Acceptance
Appendix A (Normative) Examination Rule for Aluminium Vessel Welders
Appendix B (Normative) Aluminium Vessel Welding process Qualification
Appendix C (Normative) Mechanical Property Inspection of Welding Test Plate of Aluminum Vessel Product
Appendix D (Informative) Structure Design
Appendix E (Informative) Welding Procedure Specification of Aluminum Vessel
Appendix F (Informative) Non-proportional elongation Stress and Part of Mechanical, Physical and Technical Properties of Aluminum and Aluminum Alloy as Required at Different Temperatures
Appendix G (Informative) Representation Methods of the Designation and State of Aluminum and Aluminum Alloy.