As the field of Mechanical Engineering so vast is its business field. Starting from the deriving of ores from mines to transform it into real-life goods, the entire process is associated with several types of businesses. Numerous Enterprises have been grown up based on the Technologies developed by Mechanical Engineers. Now, let us see the major fields of Mechanical Engineering and related Businesses. These are –

1. Bulk-Metals and Sheet -Metals: It is one of the major fields wherein small to large scale businesses are running world-wide. All the three types of businesses, i.e. manufacturing, supplying and maintenance are available here. These are –
   • Metal Suppliers: Metallic logs, blocks, billets, channels, angles, Rods, wires, sheets of different sizes are supplied.
   • Metal forming Industries: Metallic logs, blocks, billets, etc. are given with different shapes and sizes through metal forming processes.
   • Fabrication Industries: Metallic sheets and wires are provided with different shapes and sizes through various types of mechanical operations; such as – Bending, punching, Stamping, Flame cutting, etc.
2. Non-Metals: It is one of the major fields wherein small to large scale businesses are running world-wide. These are –
   • Plastics: Small to large scale industries has been developed for manufacturing different types of plastic utensils, like – Furniture, Kitchen utensils, Toys, Plumbing accessories, Automobile accessories, etc.
   • Rubber: Small to mid-volume industries has been grown up to manufacture various types of Rubber-made utensils; e.g. Rings, Belts, etc.
   • Ceramics: Small to large scale industries has been set up to manufacture ceramic utensils; such as – Fiber sheets, Glass sheets, Porcelain basin, Washroom accessories, etc.
     All the three types of businesses, i.e. manufacturing, supplying and maintenance are available here in these fields.

3. Casting: Small to large scale industries have been grown up in this field of casting. Now-a-days, casting technologies have been implemented so widely that starting from a very small components, like – surgical apparatus to huge components, like – parts of heavy machineries are manufactured in this process. Both manufacturing and supplying types of businesses are available here.

4. Machining: It is one of the major conventional fields wherein small to large scale businesses are running world-wide. Machining technologies have been implemented to produce a wide variety of useful components, ranging from very small hardwire components to huge parts of heavy machineries. All the three types of businesses, i.e. manufacturing, supplying and maintenance are available here.

5. Welding: Numerous varieties of welding techniques are being implemented to manufacture a wide range of components in jewelry, fabrication industry, automobile industry, heavy machinery industry, construction works, etc. All the three types of businesses, i.e. manufacturing, supplying and maintenance are available here.

6. Heavy Machineries: It is one of the major conventional fields wherein medium to large scale businesses are running world-wide. All the three types of businesses, i.e. manufacturing, supplying and maintenance are available here. Heavy machineries are widely used in the fields of Construction, Mining, Material processing and handling, etc.

7. Automobiles: It is one of the major conventional fields wherein medium to large scale businesses are running world-wide. All the three types of businesses, i.e. manufacturing, supplying and maintenance are available here. Starting from the manufacturing to maintenance, multi-level businesses have been grown up in this field.

8. Aircrafts: It is one of the major conventional fields wherein medium to large scale businesses are running world-wide. Both the manufacturing and maintenance types of businesses are available here.

9. Shipping: It is one of the major conventional fields wherein medium to large scale businesses are running world-wide. Both the manufacturing and maintenance types of businesses are available here.

10. Armaments: It is one of the conventional fields wherein medium to large scale businesses are running world-wide. All the three types of businesses, i.e. manufacturing, supplying and maintenance are available here.

11. Mechanical Tools and Testing Devices: It is one of the conventional fields wherein small to large scale businesses are running world-wide. All the three types of businesses, i.e. manufacturing, supplying and maintenance are available here.

12. Medical Equipment and Accessories: It is one of the conventional fields wherein small to large scale businesses are running world-wide. All the three types of businesses, i.e. manufacturing, supplying and maintenance are available here.

13. Power Generation and Distribution: It is one of the major conventional fields wherein small to large scale businesses are running world-wide. All the three types of businesses, i.e. manufacturing, supplying and maintenance are available here.

14. Hydraulic Machines and Accessories: It is one of the major conventional fields wherein small to large scale businesses are running world-wide. All the three types of businesses, i.e. manufacturing, supplying and maintenance are available here.

15. Heat Engines (Air conditioner, Refrigerator, Heat Pump, etc.): It is one of the major conventional fields wherein small to large scale businesses are running world-wide. All the three types of businesses, i.e. manufacturing, supplying and maintenance are available here.