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1-44章
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中华人民共和国住房和城乡建设部公告
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Foreword
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1 Scope
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2 Normative References
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3 Basic Design Principles
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4 Shape，Sizeand Materials for Ducts
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5 Layoutof Ducts
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5.1 General Requirements
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5.2 Flue Gas Ducts
5.3 Air Ducts
6 Structure of Ducts
6.1 General Requirements
6.2 Duct and Reinforcement Ribs
6.3 Type Selection for Ducts
6.4 Insulation Construction
7 Components，Partsand Drive Assemblies
8 Supports and Hangers
Appendix A（Informative） Specification Selection for Reinforc
Appendix B（Normative） Welding of Duct to Flanges
B.1 Welding of Rectangular Duct
B.2 Welding of Flanges to Duct
Appendix C（Normative） Welding of Rein for cement Ribs
C.1 Welding of Reinforcement Ribs for Circular Duct
C.2 Welding of Reinforcement Ribs for Rectangular Duct
C.3 Welding of Reinforcement Ribs for Irregular Ducts
Appendix D（Normative） Typical Layout of Reinforcement Ribs a
D.1 Typical Layout for Reinforcement Ribs of Rectangular Duc
D.2 Node Types of Internal Supporting Rods for Rectangular D
Appendix E（Informative） Type Selection for Transverse Reinfo
Explanation of Wordingin This Specification
Explanation of Provisions
1 Scope
3 Basic Design Principles
4 Shape，Size and Materials for Ducts
5 Layout of Ducts
6 Structure of Ducts
7 Components，Parts and Drive Assemblies
8 Supports and Hangers
Appendix A（Informative） Specification Selection for Reinforc
Appendix B（Normative） Welding of Duct to Flanges
Appendix C（Normative） Welding of Reinforcement Ribs
Appendix D（Normative） Typical Layout of Reinforcement Ribs a
Appendix E（Informative） Type Selection for Transverse Reinfo
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