（１）The doors of radial protection shall be classified into industrial protective doors and medical protective doors according to different customers and different protective requirements, which are described in detail is as follows:
A） Type NC-A multi-functional doors of medical protection of X-ray.
B） Type NC-B doors of radial protection for Linear accelerator, Neutron knife,Nowlis knife, Gamma knife, Gamma-ray treatment rooms and so on.
C） Type NC-C protective doors of radial flaw detection.
The above-mentioned protective doors can be manufactured by two kinds of automatic mode and manual mode according to customers' requirements.
（２）The radial protective doors can be made by made by push-pull mode or parallel-movement mode according to customers' requirements.