What is the approximate length of the threaded portion of a 1-1/4" metallic pipe for gas supply?

For a 1-1/4" metallic pipe used in gas supply, the typical length of the threaded portion is approximately 1 inch. This standardization in plumbing and gas fitting is essential to ensure compatibility and proper connections with fittings and valves.

When considering gas supply systems, having the right dimensions for threaded portions is crucial for creating secure and leak-free connections. This measurement ensures that when the pipe is threaded, it provides enough engagement and compression to maintain a reliable seal without risking gas leaks.

While there are variations in different applications, the 1-inch length that is commonly accepted is based on industry standards and practices that have evolved to accommodate the needs of gas installations. It facilitates a balance between strength and coupling ease without introducing potential issues found with longer or shorter threads.