forms of public sector enterprise

1. departmental undertaking

1.1. Railway

1.1.1. post and telegraph

1.1.1.1. All India Radio

1.1.1.1.1. Durdarshan

2. statutory corporation

3. Life Insurance corporation of India

4. Industrial Finance Corporation of India

5. Food corporation of india

6. Government companies

6.1. Hindustan machinery tool limited

6.1.1. Steel Authority of India Limited