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22.5 degree elbow carbon steel manufacturer, what is the inner angle?

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22.5 degree elbow carbon steel manufacturer, what is the inner angle?
1.1.5 times the center height of the elbow = diameter * 1.524, in fact it is the diameter * multiple, the number after the decimal point of the result is rounded to the integer, for example, the diameter of 219 is 200, and the center height is 200*1.524 =304.8, take 305; if the diameter of 114 is 100, the center height is 100*1.524=152.4, take 152.

2. Poke height = center height + radius of the elbow, such as the stamp height of an elbow with 1.5 times the diameter of 219 = 305 + 219/2 = 305 + 109.5 = 414.5

3. The length of the outer arc = (center height + radius)*3.14*2/360*degrees, that is (poke height)*3.14*2/360*degrees, from which the outer arc length of the 90-degree elbow can be calculated = poke High*3.14/2

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

5. The blanking length of the elbow = the center height of the elbow * 3.14 / 2 * the outer diameter of the elbow / pipe diameter + (pipe wall thickness * 3) + processing allowance, such as using 180 * 8 pipe blanking, push the system The 273 elbow can be calculated with the above formula, the blanking length=381*1.57*273/180+24=931.22mm+ machining allowance

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