Engineering Standards
Decode the standard. Design with confidence.
Plain-language breakdowns of ASME, API, and ASTM standards — what they require, why they require it, and what it means for your design. Always verify against the official standard before use.
Jul 10, 2026
ASME B31.3 Pipe Wall, Bend Thickness, Hoop Stress, and Hydrotest: A Beginner's Guide
A step-by-step beginner's guide to every B31.3 calculator input, straight and bend wall equation, temperature factor, hoop-stress utilization, hydrotest check, MAWP result, and warning, with a complete TP316 worked example.
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Jun 29, 2026
API Specification 17D Explained: Subsea Wellhead and Tree Equipment
A plain-language, image-supported guide to API Specification 17D: what it covers, which subsea equipment uses it, how PSL and validation fit together, and what the pressure testing requirements mean in practice.
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Jun 14, 2026
API 6A Made Simple: How to Build Wellhead Equipment That Passes
A plain-language walkthrough of API Spec 6A — how pressure testing, material selection, and fastener choices come together to make wellhead and tree equipment safe and compliant. Written so a beginner can actually follow it.
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May 30, 2026
ASME Y14.5-2018 Dimensioning & Tolerancing Best Practices
A practitioner's guide to the standard that defines how engineering intent is communicated on drawings and digital models — covering fundamental rules, datum reference frames, all geometric characteristics, material condition modifiers, and actionable best practices. 📐 ASME Y14.5-2018 🔧 GD&T / Engineering Drawing 📅 Based on 2018 revision
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May 27, 2026
Engineering Drawings Explained: A Complete Guide to the ASME Y14 Standards
An engineering drawing is the universal language between a designer and a manufacturer — and the ASME Y14 series is the rulebook that makes sure everyone speaks it the same way. This guide covers the full Y14 family (Y14.1, Y14.2, Y14.3, Y14.100) from the basics of sheet formats and line types all the way through to section views, revision control, and the drawing practices that separate a professional drawing from a poor one.
Read standardHow these standards notes are prepared
Standards pages on EnggTools are written as practical interpretation notes, not copied clauses. The goal is to explain where a code or specification is normally used, which engineering decisions it affects, and what a designer should verify in the official document before releasing a calculation, drawing, or procedure.
Each guide is kept focused on original engineering explanation: scope, terminology, common design checks, review cautions, and links to related tools or articles where they help. Protected standard text, tables, figures, and clause-by-clause reproductions are deliberately avoided so the page remains useful without replacing the purchased standard.
For design and review work
Use these pages to identify the right standard family, understand the type of verification expected, and prepare better questions for project specifications, client requirements, supplier documents, and engineering review meetings.
For compliance-sensitive topics
When pressure equipment, piping, pipelines, lifting, offshore hardware, or material certification is involved, the notes point users back to current official standards and competent approval instead of presenting simplified web content as a final compliance answer.