References & further reading
- ASME B31.3 Process Piping — pressure design of components and branch reinforcement (per edition in force where you practice).
- GB/T 20801.1-2025 (Pressure piping code — Part 1: Industrial piping) for thin-wall cylinder screening alignment where applicable.
- Listing standards is for traceability only; it is not an endorsement and does not replace licensed engineering review.
Model assumptions
- Straight pipe: thin-wall metal form as shown in the on-grid formula; non-metal replaces allowable stress times joint efficiency with allowable hoop stress times strength design factor. When calculated wall thickness reaches one-sixth of outside diameter, thick-wall or alternate code formulas may be required—see the on-grid warning.
- GB mode: appendix B [σ]ᵗ, table 27 Y, and table 17 W are interpolated from published server data and shown read-only; ASME mode requires manual stress entry. Schedule screening lists only adequate options and is not a final procurement specification.
Shareable URL
Use “Copy shareable link” below the grid; t=m or n selects metal/non-metal. All math stays in the browser.
Frequently asked questions
- Can I use outputs on a stamped calculation submittal?
- Only after your qualified engineer confirms inputs, code edition, and any items not modeled here.
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.