... presssure 4.Cost saving Fiberglass Composite PP-R Pipe Extrusion Line"is an extension of the traditional PP-R pipe, which is reinforced by ... high quality and more economical product.Compared with the traditional PP-R pipe, such enhanced pipe characters higher rigidity, lower ... rigid than normal PP-R (PP-B) pipe, could be installed out door.--With the bind of fibergalss, so composite pipe could provide ...