Sprang is closely related to braiding, but it is done on threads
which are stretched on a frame, so that the braided fabric builds
from both ends towards the middle.
Here's the handout from my
and another handout on patterned sprang
Basics of circular warps for sprang and a sprang frame designed for circular or flat sprang.
Peter Collingwood has a book, The Techniques of Sprang:
Plaiting on Stretched Threads