The internal and external anti-corrosion steel pipes for water running are composite steel pipes with good anti-corrosion properties made by different anti-corrosion methods formulated by the steel pipes according to the characteristics of the pipes. It combines the impact resistance of steel pipes and the corrosion resistance of anti-corrosion coatings, and truly achieves the characteristics of plasticity and corrosion resistance.

Internal and external anti-corrosion steel pipes for water use can be divided into two types according to the purpose of water quality. One is drinking water pipes. Generally, the inner wall is made of ipn8710 anti-corrosion steel pipe, and the outer wall is made of epoxy coal tar tar with a slightly lower price. Of course, this standard is the basic standard. Now the high standard practice includes the 8710 outer wall 3pe method of the inner wall, and the inner and outer plastic coating method, which has a longer service life and a higher price.

When the internal and external anti-corrosion steel pipes are used for water drainage, the inner and outer walls are generally made of epoxy coal tar pitch for anti-corrosion, and the service life is 15-20 years. If you want to have a longer life, you will design the internal and external pe powder anti-corrosion, and the internal and external epoxy powder anti-corrosion is also called plastic coating anti-corrosion. Regardless of the anti-corrosion method, internal and external sandblasting is required to make the coating last longer. Otherwise, the coating is easy to fall off, and it loses the meaning of making anti-corrosion.