Z purlin flasing meet the needs of a large building with a long distance for a portal frame - length , one -piece flasing purlin a number of features make Utomo flasing purlin attractive and economical as eave purlin and flasing combined :     it may be given without the connection plate     bwegalur web and strengthens the external face flush . Utomo standards purlin bolts hidden in the flute . no special bolts fascia .     the top flange can be rolled up at an angle of 84   to 120   to install a roof from 6    to 30      The bottom of the leads was formed to provide a simple panatapan sheeting walls