The technical requirements of flanges
1. Flange should conform to the technical requirements of GB / T 9124 requirements.
2. Flange at different temperatures with a maximum non-shock working pressure should conform to GB / T 9124-2000 Appendix A (the standard appendix) requirements.
3. Flange groove welded joint types and sizes should conform to GB / T 9124-2000 Appendix B (Tip of the appendix) requirements.
