Strengthening calculation for large openings in HG20582
Thread Content
In the section on large openings in HG20582 (P117), it is stated that this method is applicable when di/Di ≤ 0.8; however, it is also mentioned later that \"that is, di/Do ≤ 0.8\". So, which one should be used as the denominator: the inner diameter or the outer diameter of the cylinder? 2. Here, di refers to the inner diameter of the nozzle or opening. Is this the same as di in GB150 (the inner diameter of the nozzle plus twice the additional thickness of the nozzle)?
The numerator is the opening diameter, and the denominator is the outer diameter of the cylinder……
1. The book states that di/Di is above the range specified in GB150, but di/Do ≤ 0.8; this isn’t what the original poster meant, right? 2. The value of di here is consistent with that in GB150