Refresher Practical Problems Practice Test 2025 - Free Practice Questions and Study Guide

Question: 1 / 400

What is the effective thread length of a 3" diameter screwed steel pipe?

1 inch

1 1/4 inches

1 1/2 inches

To determine the effective thread length of a 3-inch diameter screwed steel pipe, it is important to refer to the standards established for pipe threads, particularly those outlined by the American National Standards Institute (ANSI) or relevant plumbing codes. For a 3-inch diameter pipe, the effective thread length is typically standardized.

In the case of a 3-inch diameter pipe, the generally accepted length of the threaded portion is approximately 1 1/2 inches. This is based on industry standards that specify the typical threading for such diameters, ensuring proper engagement of the pipes and fittings during assembly while allowing for a sufficient surface area for sealing and strength.

Thus, recognizing that the effective thread length for this specific size of pipe is standardized facilitates accurate installation and maintenance within plumbing systems, allowing workers to adhere to mechanical integrity and safety protocols. This understanding is crucial for professionals working in plumbing, piping, and other related fields.

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2 inches

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