# JIS G3445 Guide

> A concise JIS G3445 reference for carbon steel machine structural tube scope, uses, resources, and theoretical weight.

JIS G3445 Guide (https://www.jisg3445.com) is an independent editorial handbook about JIS G3445, published by the Succession MFG editorial team. Independent educational resource covering JIS G3445. Not affiliated with or endorsed by the standards body. Purchase the official standard for normative requirements. Machine-readable inventories are available at https://www.jisg3445.com/data/site-index.json and https://www.jisg3445.com/data/spec-summary.json.

## Pages

- [JIS G3445 — Carbon Steel Tubes for Machine Structural Purposes](https://www.jisg3445.com/): A concise JIS G3445 reference for carbon steel machine structural tube scope, uses, resources, and theoretical weight.

## Tools

- [Theoretical tube weight calculator](https://www.jisg3445.com/): Planning estimate from nominal geometry and stated steel density; not a conformance measurement.

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