This paper describes in detail the development of computer aided angle pipe design(APD)system which has been designed and implemented by Autolisp language and DCL and can greatly speed design of various kinds of angle pipe.

• 本文详细描述了应用Autolisp和DCL进行计算机辅助弯管设计（APD）系统的开发。 实践表明，APD系统可大大加快弯管钣金构件的设计速度。