The invention disclsoes a
pipe body, and specifically disclosed a temperature-resistant anti-freezing PP
pipe and a preparation process thereof. The temperature-resistant anti-freezing PP
pipe comprises a PP layer serving as a main body, temperature-resistant
layers are arranged on the inner side and the outer side of the PP layer, a
corrosion-resistant layer is arranged on the inside of the temperature-resistant layer on the inner side of the PP layer, and an anti-freezing layer, a heat preservation layer and a protective layer are sequentially arranged on the outside of the temperature-resistant layer on the outer side of the PP layer. The temperature-resistant
layers arranged on the inner side and the outer side of the PP layer are capable of
cutting off and slowing down temperature transmission to a certain extent; the anti-freezing layer is prepared taking homo-
polypropylene and
polyamide as raw materials, and has good high
temperature resistance and
corrosion resistance, so thatthe performance of the PP pipe is improved, and the
cold resistance and freezing resistance of the PP pipe are improved greatly; the heat preservation layer and the protective layer are capable of stopping external
heat transfer and protecting the PP pipe at the same time, and widening the using temperature range further; the internally coated
corrosion-resistant layer is capable of improving tubular material corrosion resistance greatly, and prolonging service life; the materials of the
layers of the PP pipe are nontoxic environment-friendly materials, and no
pollution on the environment is caused.