Galvanized Steel Pipe

Description

Galvanized steel pipe is a steel pipe with a layer of zinc on the surface of ordinary steel pipe, the purpose is to prevent corrosion and extend the service life. The galvanized layer can effectively isolate air and moisture and prevent the steel pipe from rusting.
Classification
According to the galvanizing process:
Hot-dip galvanized steel pipe: The steel pipe is immersed in molten zinc liquid to form a thicker zinc layer with strong corrosion resistance.
Electro-galvanized steel pipe: Galvanized on the surface of the steel pipe by electrolysis, the zinc layer is thinner, suitable for occasions with high appearance requirements.
By use:
Galvanized steel pipe for structure: used for buildings, bridges and other structures.
Galvanized steel pipe for fluid transportation: used for water, gas and other fluid transportation.
Galvanized steel pipe for machinery: used for machinery manufacturing and parts.
By shape:
Circular galvanized steel pipe: the most common, used in a variety of occasions.
Square and rectangular galvanized steel pipe: mostly used in construction and decoration.
Process
Hot-dip galvanizing process:
Pretreatment: pickling to remove surface oxides.
Plating aid: immerse in plating aid to prevent oxidation.
Hot-dip galvanizing: immerse in molten zinc liquid to form a zinc layer.
Cooling: water cooling or natural cooling.
Electro-galvanizing process:
Pretreatment: cleaning, pickling, activation.
Electroplating: zinc is plated on the surface of the steel pipe by electrolysis.
Post-treatment: cleaning, drying, passivation.
Features
Corrosion resistance: The zinc layer effectively prevents corrosion of the steel pipe.
Long life: The galvanized layer extends the service life of the steel pipe.
Beautiful appearance: The galvanized layer is bright and suitable for decorative purposes.
Low cost: Compared with stainless steel, galvanized steel pipes are less expensive.
Uses
Construction: used for structural support, scaffolding, etc.
Water supply: used for tap water, fire protection systems, etc.
Natural gas: used for natural gas transmission pipelines.
Agriculture: used for irrigation, greenhouse structures, etc.
Electricity: used for cable protection pipes, transmission towers, etc.
Transportation: used for bridges, guardrails, etc.
Galvanized steel pipes have enhanced corrosion resistance through the galvanizing process and are widely used in construction, water supply, natural gas and other fields. They have the advantages of low cost and long life.