This standard specifies the basic identification colors and code indications and safety sign for industrial pipelines.
This standard is applicable to aboveground gas and liquid transmission pipelines in the industrial production.
Contents of GB 7231-2003
1 Scope
2 Normative References
3 Definitions
4 Basic Identification Colors
5 Code Indications
6 Safety Signs
Appendix A (Normative) Application Examples for Marking Methods of Basic Identification Colors and Identification Signs