GB/T 20801.2-2006 Pressure Piping Code - Industrial Piping - Part 2: Materials (Text of Document is in English) - Beijing translation compay

Contents

Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 General
4.1 Selection of material
4.2 Designation of material and permissible stress
5 Basic Principle of Material Selection
6 Application Limitation for Materials
6.1 Nodular cast iron, gray cast iron and malleable cast iron
6.2 Structural steel
6.3 Piping and fitting
6.4 Carbon steel and Cr-Mo alloy steel
6.5 Austenitic stainless steel
6.6 Aluminum and aluminium alloy
6.7 Low-melting point metal
7 Application Limitation of Material at High Temperature
7.1 Upper limit of operating temperature of material
7.2 Selection principle of high temperature material
8 Application Limitation for Material at Low Temperature
8.1 Minimum operating temperature and exemption of impact test
8.2 Impact test
9 Marking of Material and Quality Certificate
Annex A (Normative) Designation of Material and Permissible Stress
Annex B (Informative) Physical Properties of Material

Table A.1 – Permissible stress table of material
Table A.2 – Permissible Stress of Bolts
Table A.3 – Longitudinal welded joints coefficient of piping and butt welding fitting
Table A.4 – Casting quality factor
Table B.1 – Total thermal expansion of metal
Table B.2 – Thermal expansion factor of metal
Table B.3 – Elastic modulus of metal