References & further reading
- GB 50316-2000 (2008 edition) §6.7.2 blind plate between flanges (Eq. 6.7.2-1/2).
- GB/T 20801.1-2025 Appendix B — allowable stress for GB mode (industrial piping).
- ASME BPVC Section VIII Division 1 UG-34 (ASME mode).
Model assumptions
- Elastic circular plate screening; outputs are estimates—qualified engineers must verify against the full code before fabrication or sign-off.
- GB 50316 §6.7.2: coefficient 0.433 is the code text value; integral plate Ej = 1.
- Geometry is idealized (circular plate, gasket diameter dG); local stress at openings is not detailed.
- Temperature derating via allowable stress you enter or from GB/T 20801.1 Appendix B cascade.
- No gasket seating force, bolt load sequence, or leakage performance is modeled.
Shareable URL
Use “Copy shareable link” below the table to encode SI inputs in the URL; open the link then click Calculate to refresh results. All math runs locally in your browser.
Frequently asked questions
- Can I use the output on a data sheet as final thickness?
- Only after your qualified engineer aligns inputs with the governing code edition, inspections, and NDE plan.
- Why is this different from the flat-cover calculator?
- §6.7.2 covers blind plates clamped between two flanges (0.433 × dG × sqrt(…)); flat covers use §6.6.1 / GB/T 150.3 Eq. (7-40) / UG-34 on the flat-cover tool.
- What does 0.433 mean? Can I use sqrt(3/4) for higher precision?
- 0.433 is the code-prescribed value in Eq. (6.7.2-1). For audit alignment with GB 50316 examples, keep 0.433—using sqrt(3/4) instead changes thickness by less than typical C1/C2 allowances.
- How is [σ]ᵗ filled in GB mode?
- Optional design temperature + GB/T 20801.1 Appendix B material cascade (industrial piping); you may override manually. This tool does not use GB/T 150.2 Table C (vessel code).
- Is data uploaded?
- No. The model executes locally in the browser.
Extended copy on this page (headings, references, assumptions, FAQs) may be drafted or localized with AI assistance; engineering judgment and governing codes still apply. Numerical models run locally in your browser as implemented. For contract-critical work, cite primary standards and qualified review.