Types of Process

Examples:

The flow chart illustrates the process by which wine is manufactured. On the whole, there are about nine distinct stages involved in wine-making, starting from growing wine-grapes to degusting the drink. It is also manifest that the procedure makes use of a wide range of specialized machinery and only one raw material – grape. Despite this, almost all stages in the process require human participation. (From Alisher posts)

Once they (ripe grapes) have been delivered, the raw material passes through a crushing machine.
Once they (ripe grapes) have been delivered, the raw material is crushed.
Having been crushed,

Body 1 and Body 2

Learn:

1. 
   Sequencing
   
2. 
   Effective use of passive tenses
   
3. 
   From verb to noun and vice versa.
   

Sequencing:

At the first step in wine production, special grapes need to be grown and collected when ripe. The harvested grapes are then loaded manually into a truck to deliver them to the factory. Once they have been transported, the fruits are crushed with the use of a machine similar to a meat grinder. In the subsequent stage, the crushed substance is put into a computer-operated tank wherein the fermentation process takes place. The fermented mass, next, is sent to another tank via the pipe that connects these two containers. It is at this stage that the substance is pressed to extract the liquid from the mixture. The obtained wine is then further filtered in the following stage, before being placed into barrels, placed horizontally, to be kept for a certain amount of time. Finally, the wine is poured into labeled bottles and is degusted by experts or consumers.
First S + V. Second S + V. Third S + V

At the first step in …, S + V

Something is then + V3 + SPOS
Once + Present Perfect, S + V
In the subsequent stage, S + V
Something next + to be + V3 + SPOS

First, oil should be poured into the container. And then meat is fried.

The meat cannot be fried until oil has been poured into the container
Before frying meat, oil should be poured into the container and heated
After pouring some oil into the container, meat is fried.

Once everyone has eaten their meal, you can go out for a walk

Having been to a camp for a week, now I feel very energetic.