Fiberglass Cloth Used for wrapping piping, fracturing circuit boards and insulating high performance electrical machines. Fiberglass cloth ... EW140, EW7628. 3.Twill weave: compared with plain weave, it is of high density, high intensity,with a soft and loose structural weave ... twill weave, it is of high density,high intensity, with a soft and loose structural weave with a good texture.It is applicable ...