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1.5in

For a 90 degree butt-joint each piece must be cut at 45 degrees.

So it will be one inch measured along the length of the pipe or 1.414 inches measured along the 45 degree cut.

When you look at the cut face at right angles (90 degrees) you will see an ellipse that is 1 inch wide and 1.414 inches long.

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12y ago
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Q: I need to know the take off for a one inch butt weld ninety. is it one and a half time the size of the pipe.?
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