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AS 1528.2:2019
[Current]Stainless steel tubes and tube fittings for food processing and hygienic applications, Part 2: Screwed tube couplings
This Standard specifies requirements for all screwed tube fitting types intended for food processing and hygienic applications. This includes ring-joint types, and trapezoidal thread (ISO type) stainless steel screwed couplings.
Published: 24/10/2019
Pages: 44
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Normative references
1.3 Terms and definitions
1.4 Symbols
1.5 Working pressure
1.6 Materials
1.6.1 Male parts, liners, nuts and blank caps
1.6.2 Joint rings, gaskets and seals
1.7 Surface finish
1.7.1 External surfaces
1.7.2 Internal surfaces
1.8 Hygienic requirements
1.8.1 Accessibility of surface of coupling
1.8.2 Welded male parts and liners
1.8.3 Joint rings, gaskets and seals
1.9 Packaging
1.10 Identification marking
1.10.1 On the container
1.10.2 On parts
1.10.2.1 Stainless steel components
1.10.2.2 Seals
1.11 Inspection certificates
1.12 Assembling
1.12.1 Welding
1.12.2 Expanding
2 Recessed ring joint type
2.1 Scope of section
2.2 Types and assemblies
2.3 Dimensions and tolerances
2.3.1 Male parts, liners, nuts and blank caps
2.3.2 Joint rings
2.4 Screw threads
2.5 Dimensions of recessed ring joint screwed couplings and components
2.5.1 Expanded-type male part
2.5.2 Expanded-type liner
2.5.3 Welded-type male part flat face (lip removed)
2.5.4 Welded-type male part
2.5.5 Welded-type flat face liner
2.5.6 Welded-type liner — Standard and Australian crevice-free
2.5.7 Welded-type liner New Zealand CIP
2.5.8 Slotted round nut
2.5.9 Hexagon nut
2.5.10 Hexagon blank nut
2.5.11 Blank cap
2.5.12 Dimensions of joint rings for recessed ring joints — Standard, flat face, Australian crevice-free and New Zealand CIP seals
3 Trapezoidal thread type screwed couplings (IDF type)
3.1 Scope of section
3.2 Types and assemblies
3.3 Dimensions and tolerances
3.3.1 Male parts, liners, nuts and blank caps
3.3.2 Gaskets
3.4 Screw threads
3.4.1 Trapezoidal thread intended for screwed couplings
3.4.2 Explanation of terms
3.4.2.1 Basic profile
3.4.2.2 Pitch (P)
3.4.2.3 Major diameter
3.4.2.4 Pitch diameter
3.4.2.5 Minor diameter
3.4.2.6 GO side profile
3.5 Determination of thread limiting dimensions
3.5.1 Thread diameters
3.5.2 Root width of threads (w, W) on GO side profile
3.6 Thread dimensions
3.6.1 Male part
3.6.2 Nut
3.7 Expanded-type male part
3.8 Expanded-type liner
3.9 Welded-type male part
3.10 Welded-type liner
3.11 Hexagon nut
3.12 Slotted round nut
3.13 Blank cap
3.14 IDF gasket
Appendix A
Appendix B
Appendix C
C.1 Introduction
C.2 Tools
C.3 Procedure
C.3.1 Preparation
C.3.2 Cutting the tube
C.3.3 Expansion
Appendix D
Appendix E
E.1 Introduction
E.2 Tools
E.3 Procedure
E.3.1 Preparation
E.3.2 Cutting the tube
E.3.3 Expansion
E.3.4 Facing off
Appendix F
Amendment control sheet
AS 1528.2:2019
Amendment No. 1 (2022)
Revised text amendment
Cited references in this standard
EN 10204
Metallic products — Types of inspection documents
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Stainless steel tubes and tube fittings for food processing and hygienic applications, Part 4: Clamp tube fittings
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Structural steel welding, Part 6: Welding stainless steels for structural purposes
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