What this pipe mass estimate represents
This tool applies the hollow-cylinder mass formula m = ρ × (π/4) × (Do² − Di²) × L with Di = Do − 2t. Enter dimensions manually or pick published GB/T 17395-2024 outer diameter and wall thickness from an audited CommoditySpec read model (national vs ISO outer-diameter profile). Default density suits carbon-steel screening; edit ρ for stainless or alloy. Outputs are local spot checks—not a substitute for mill certificates, freight scales, or the paid TSV bundle at /metadata.
Model assumptions
- Straight circular pipe segment; uniform wall thickness; no ovality, taper, mill tolerance band, or end bevel metal removal modeled.
- Density is a single user value; no alloy mixing or temperature correction.
- GB/T 17395 mode loads published dimension rows only—when the API returns no rows, use manual entry.
- Listing GB/T 17395-2024 is for traceability; this site does not reproduce standard PDFs.
References & further reading
- Published GB/T 17395-2024 pipe dimension rows (CommoditySpec read model) — preview at /tools/data/gbt17395; bulk TSV at /metadata.
- Classic hollow-cylinder mass from outer/inner diameter and length; undergraduate mechanics of materials texts.
- Pipe fitting weight calculator (/tools/fitting-weight) for elbows, tees, and reducers.
Shareable URL
This tool does not encode inputs in the URL yet; bookmark the localized page path if you need to return. All calculations execute locally in your browser.
Frequently asked questions
- Where does the GB/T 17395 dropdown data come from?
- From an audited CommoditySpec published in the workbench—not from OCR drafts or PDF scraping. See the provenance badge on the page.
- Why does my scale weight differ?
- Mill tolerance, end preparation, and non-uniform wall thickness change actual mass; use this page for order-of-magnitude checks only.
- Can I use stainless or alloy density?
- Yes—edit the density field; the geometry formula stays the same.
- Are calculations sent to a server?
- No. Math runs entirely in your browser session.
Extended copy on this page (headings, assumptions, references, 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.