Dear All,

Due to internal friction at the elbow by catalyst, my client is boxing-up the elbow. It is because the elbow will be used up and the wall will be getting thinner and end up leakage at the elbow. To solve this, my client applied 1 size up of bent pipe to boxed-up this elbow (4inch elbow covered with 6inch bent pipe).

To be more detail: 4" line and many elbows, we covered the elbow and about 500mm after and before 4" elbow, with 6" bent pipe and boxed it up.

My question is, how to model this boxed-up elbow?


Thanks