How to calculate the size of pipe fitting elbow

　　The determination of pipe fitting elbow size requires knowledge of the pipe fitting elbow diameter, bending radius, angle, and some even have straight sections. According to the angle, there are three most commonly used types: 45 °, 90 °, and 180 °. In addition, other abnormal pipe fitting angle elbows such as 60 ° are also included according to engineering needs. Determining the angle of the pipe fitting elbow requires measuring with tools, and only 180 degrees, 90 degrees, and 45 degrees can be seen.

　　Calculation formula for elbow size:

　　1. 1.5 times the center height of 90 Degree Carbon Steel ASME B16.9 Butt Weld Lr Pipe Fitting Elbow=diameter * 1.524, which is actually the diameter * multiple. Round the number after the decimal point of the obtained result to an integer. For example, if the diameter of 219 is 200, the center height is 200 * 1.524=304.8, which is taken as 305; For example, if the diameter of 114 is 100 and the center height is 100 * 1.524=152.4, take 152.

　　The algorithm for calculating the curvature radius of DN100 and above Butt Weld Carbon Steel Pipe Fitting Elbow is convenient and fast.

　　2. Poke height=center height+radius of bend, for example, the poke height of a bend with a diameter of 219 and a diameter of 1.5 times is 305+219/2=305+109.5=414.5

　　3. Outer arc length=(center height+radius) * 3.14 * 2/360 * degrees, i.e. (punch height) * 3.14 * 2/360 * degrees, from which the outer arc length of a 90 degree Butt Weld Carbon Steel Pipe Fitting elbow can be calculated as=punch height * 3.14/2

　　4. Inner arc length=(center height radius) * 3.14 * 2/360 * degrees

　　5. The cutting length of Butt Weld Carbon Steel Pipe Fitting Elbow=elbow center height * 3.14/2 * elbow outer diameter/pipe diameter+(pipe wall thickness * 3)+machining allowance. If using a 180 * 8 pipe for cutting and pushing a 273 elbow, the above formula can be used to calculate:

　　Cutting length=381 * 1.57 * 273/180+24=931.22mm+machining allowance.