1, for the appearance of the paint decorative paste products, requiring smooth and smooth, allowing repair, there are patterns require products only allow minor repair, after the paint decoration, FRP Pipe surface does not allow defects; for the outer surface of the gel coat decorative paste products, does not allow obvious signs of repair.
2, the inner surface of FRP Pipe products should be clean, no glitches and obvious spiky, scars and other defects.