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hi friends welcome to technical studies in this video we will learn how to calculate the required length of a pipe to make a Bend this method is applicable to rods bars Etc to calculate the required length of a pipe to make a Bend we need to know the bend radius the including degree and the diameter of the pipe in a drawing usually the mean radius or the center radius is given suppose the outer radius is given subtract the half diameter from the outer radius to get the center radius assume the diameter of the bend is 60 millimeters and the outer radius is 600 millimeters then the mean radius is 600 minus half the diameter of the pipe is equal to 570 millimeters in our drawing there are two bends one is 90 degree and the other one is 45 degree let us calculate the pipe length for the 90 degree the formula is radius multiplied by 2 multiplied by 3.14 divided by 360 multiplied by the required degree so the length of the 90 degree segment is 785 millimeters let us calculate the length of t