Connection from hdpe to steel pipe

 
  • Hi All,
    We are mining industry so we have dealing with HDPE and steel pipe.
    To route pipe from under ground (HDPE) to above ground (steel) we use this way, please correct me if I'm wrong :
    A.PROCEDURE ONE
    1.Create stub end, skey FLSE size 63
    2.Backing ring/flange, skey FLLB size P1 63 P2 50 => this is to match with steel pipe
    3.Gasket size 50
    4.Flange/valve size 50

    But when we run isometric the symbol is reducing flange not LJSE symbol
    So we come back to paragon and change backing ring P2 to 63 then run isometric (again) the symbol become LJSE (As we want) even without bolt
    in the mean time when designer continue routing (LJSE thing) we come back (again) to paragon and reset backing ring P2 to 50

    B.SECOND PROCEDURE
    We create ATTA (P1 63 P2 50) with MTOC off between Backing Ring and Gasket.
    but the problem is the bolt not show

    Finally, Which procedure is close to correct?
    Any experience or solution please share with us.Thank you

    Best Regards,
    Salamun