Galvanized steel pipes are divided into cold-dip galvanized pipes and hot-dip galvanized pipes. Cold-dip galvanized pipe is electro-galvanized. The amount of galvanizing is very small, only 10-50g/m2. Its corrosion resistance is much worse than that of hot-dip galvanized pipe. Hot-dip galvanizing pipe reacts molten metal with cast iron matrix to produce an alloy layer, thereby combining the matrix and the coating.
Galvanized steel pipe size specification table description: W=C×[0.02466×(D-S)×S]
W–Weight of galvanized pipe per meter: kg/m
C–The weight coefficient increased by galvanized pipe compared with black iron pipe
D–outer diameter of cast iron pipe
S–Wall thickness of black iron pipe
Link to this article：What are the dimensions and specifications of galvanized steel pipes?
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