API 570 question of the day · 13 November 2026

Today's API 570 practice question

I. Calculations for thickness measurements, inspection intervals and piping integrity

In the thickness formula for straight pipe, what does Ej account for?

The thermal expansion of the pipeThe corrosion allowance on the pipeThe longitudinal joint qualityThe impact energy of the pipe

Want more than one a day? Take the free 10-question API 570 check to find your weakest area, or see the full course.

Get the API 570 course · $199 See all plans

Terms and refunds · Secure checkout by Stripe · Billed by Nori Software

Put today's question on your site

Give your students or members a new API 570 practice question every day. Copy this HTML with its link back to Long Seam. The question changes each day on its own. Paste both lines; if your site strips scripts, the frame keeps a fixed height.

Embed HTML with link

<iframe src="https://longseam.com/api-570/daily?embed=1&utm_source=embed&utm_medium=referral&utm_campaign=daily_embed&utm_content=daily-api-570" id="ek-daily-api-570" title="API 570 question of the day" width="100%" height="560" loading="lazy" style="border:0"></iframe><script>addEventListener("message",function(e){var f=document.getElementById("ek-daily-api-570"),d=e.data,h=d&&+d.height;if(f&&h>0&&e.source===f.contentWindow&&e.origin==="https://longseam.com"&&d.type==="ek-embed-height")f.style.height=Math.min(4000,Math.max(300,h))+"px"})</script>
<p><a href="https://longseam.com/api-570/daily?utm_source=embed&utm_medium=referral&utm_campaign=daily_embed&utm_content=daily-api-570">API 570 question of the day by Long Seam</a></p>

Follow by RSS · one question a day in your feed reader, Teams or Slack. Nothing is emailed.

This question is original and written to American Petroleum Institute's published content outline. A new question appears each day at midnight Eastern.

Today's API 570 practice question

In the thickness formula for straight pipe, what does Ej account for?

API 570 practice questions by email