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Pipes with thick walls benefit from better resistance to kinking.

The long-term minimum bend radius indicates how much an HDPE pipe can be curved for an extended period (e.g., years or decades) safely. Calculating the Minimum Long-Term Bend Radius for HDPE Pipe Reach out to the pipe manufacturer for short term allowable bend ratios. The minimum allowable bend ratio value for a pipe varies depending on the length of time the pipe needs to be bent (i.e., long-term vs. In the equation, R = minimum bend radius (in inches), a = minimum allowable bend ratio, and OD = the pipe’s outside diameter (in inches). The minimum bend radius for HDPE pipe can be calculated using the following equation: Formula for Calculating the Minimum Bend Radius of HDPE Pipe Below, we cover how to calculate the minimum bend radius for HDPE pipe. While it is always measured to the inside curve of the bend, it refers to the minimum radius achievable for a long amount of time (i.e., long-term bend radius). The bend radius refers to the minimum (i.e., smallest) radius a pipe can be bent without experiencing kinks, damage, or otherwise degradation.

This unique characteristic allows pipes made from it to be bent to a tighter radius, which can significantly facilitate handling and installation operations since the components can be flexed to avoid obstacles or handle curvatures in the bore path during directional drilling.

Compared to many other pipe materials, high-density polyethylene (HDPE) offers greater flexibility.