This is the fourth release of AutoLISP Drainage Pipe Program that used by Mechanical Engineers and Draughtsmen as well to draw Drainage System.
The following fittings are added to the program recently for the two systems Metric & Imperials .
1- REDUCER 200×160
2- REDUCER 160×110
3- TY 160×110
4- TY 110×50
Download directly from Autodesk website : THIS LINK