The following is a comprehensive introduction to galvanized square tubes：

one、Definition of galvanized square tube

Galvanized square tube is a square steel pipe treated by hot-dip galvanizing or cold galvanizing process。It uses hot-rolled or cold-rolled galvanized steel strip or galvanized coil as raw material，After cold bending processing and forming，Made by high-frequency welding or hot-dip galvanizing treatment。

two、Production process

Galvanized square tubes are mainly divided into hot-dip galvanized square tubes and cold-dip galvanized square tubes：

Hot dip galvanized square tube：

Curl steel plates or strips into shape and weld them into square tubes，Then immerse it in a hot-dip galvanizing bath，F(xiàn)orming a zinc layer through a series of chemical reactions。

Simple production process，High production efficiency，Suitable for small manufacturers to produce。

Has good strength、resilience、Plasticity and welding performance，Strong adhesion of zinc layer。

Cold galvanized square tube：

Coating zinc layer on the surface of square tube through electrochemical principle，Mainly relying on electroplating technology。

The galvanized layer is relatively thin，But the surface is smooth、even，Superior anti-corrosion performance，Suitable for occasions with high anti-corrosion requirements。