Copper tube bending radius chart7/27/2023 The bend radius is the minimum radius that a pipe can be bent, without damaging it. Ensure to mark the point at the outermost point of the bend radius. Use a permanent marker to highlight a point on the copper tube where the bend will be made.Clean off/deburr any rough edges at the copper pipe’s ends resulting from cutting the pipe.Perform the following steps to bend a copper pipe with a tube spring: Tube springs are capable of forming 180° bends. They prevent the pipe’s wall from spreading outwards during the bend. External bending springs: These springs fit over a copper pipe that has 6 - 10 mm outside diameter.They prevent the pipe’s wall from collapsing during the bend. Internal bending springs: These springs fit inside copper pipe that has 12 - 22 mm outside diameter. ![]() There are two types of bending springs: internal and external. The spring supports the pipe walls while bending it manually. A bending spring is a strong and flexible spring that is inserted into (or on the surface) of a copper pipe. Using a bending spring is the easiest way to bend copper pipes without a pipe bender. How to bend copper pipe without a pipe bender Use a spring ![]() A different bender is required for each pipe size.Figure 3: A dual pipe bender bending a copper pipe.
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