When winding a motor, there are several ways that it can be done. The number of turns of wire around each stator pole determines the Kv value of the motor, and the size of the wire determines how much current that motor can handle.
Here in the USA, wire is measured with the American Wire Gauge standard or AWG for short. The way the system works is that the larger the number, the smaller the wire. Also, each 3 gauge sizes you go up or down, the current capacity of the wire either cuts in half or doubles. In Europe and Asia, Metric size wire is used, and it is simply listed by the diameter of the strand.
For example, if you have a motor that would require a single strand of 16 AWG wire to carry the required current, you could simply use 1 strand of the 16 AWG wire. The downside to this is that 16 AWG wire is about as big around as a strand of standard size spaghetti, and this is pretty stiff and difficult to wind around the stator. On some of the larger Scorpion Limited Edition motors, such as the HK-4525-520, this is exactly what is done. Each stator is carefully hand wound with a single strand of this large size wire, but it is a very time consuming process that takes a very skilled motor winder.
In a production environment, the stators need to be wound faster, so instead of one large strand of wire, several strands of smaller size wire are used to wind the stators. The smaller wire is easier to wrap around stator slots, so the stators can be wound quicker, and with less stress on the winders fingers.
Because of the fact that every time you go up 3 gauge sizes, the current capacity of the wire cuts in half, you need to use more strands of the smaller wire to handle the same amount of current. Instead of the single strand of 16 AWG wire, 2 strands of 19 AWG wire could also be used. This would still be a bit stiff, so you could also use 4 strands of 22 AWG wire to wind the stator. Likewise, to make it even easier to wind 8 strands of 25 AWG wire would also work.
Looking at the Scorpion HK-3014-900 motor specifically, it uses 7 parallel strands of 0.25mm diameter wire. To make the conversion from Metric to American wire gauge sizes, I have attached a copy of my wire table that I put together almost 10 years ago. If you look at this chart on page 6, you can see that the metric 0.25mm wire is closest in size to an American 30 AWG wire.
So when the Scorpion HK-3014-900 motors are made at the factory, a bundle of wire that contains 7 individual strands of 0.25mm wire (30 AWG) is used to wrap 11 turns of wire around each slot of the stator.
You can see a shot video of how a stator is wound at the Scorpion factory at the following link on YouTube.
Hopefully that answers your questions.