Hi Harpreet, Thank you very much for your response. We'll work it out and let you know how it works. However, please be so kind so as to take into account that weld gaps should be included in specification in the future. Value of the thickness of weld gap depends on diameter of the main size of the pipe. So we would strongly suggest to add it to the wishlist for the future versions of OP Modeler. Best regards, Maciej
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