There are two types of galvanized steel pipes, one is galvanized strip steel pipe, also called A:
Overall enhanced reliability
less maintenance
Protected by advanced ASTM standardization
. The processing process is the same as that of the ERW steel pipe, except that the raw material is galvanized steel coil. The weld will be repaired with zinc again, so there is no obvious weld on the surface, which is more beautiful. It is not only the zinc layer that determines the life of the pre-galvanized steel pipe, but also the passivation solution. After forming, soaking in high-quality passivation solution can extend the life of the pre-galvanized steel pipe.
