The following is a comprehensive introduction to galvanized square tubes：
one、definition
Galvanized square tube is a square steel tube that is treated with hot-dip galvanizing or cold galvanizing process on the surface of the square tube。It is based on ordinary carbon structural steel or low-alloy steel as the substrate，After galvanizing treatment，A layer of zinc is formed on the surface，Thus possessing good anti-corrosion performance。
two、Production process
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)ormation of zinc layer through chemical reaction。
Simple production process，High production efficiency，Suitable for small manufacturers to produce。
The zinc layer of hot-dip galvanized square tube is thicker，Strong adhesion，Superior corrosion resistance。
Cold galvanized square tube：
Coating zinc layer on the surface of square tube through electrochemical principle，Mainly using electroplating method。
The zinc layer of cold galvanized square tube is relatively thin，But the surface is smooth and uniform，Suitable for occasions with high anti-corrosion requirements。
three、Performance characteristics
Strong corrosion resistance：The galvanized layer forms a dense protective film，Can effectively prevent air and moisture from coming into contact with steel pipes，Thereby slowing down the corrosion rate。
Good mechanical performance：Retaining the high strength and toughness of the original steel material，Capable of withstanding significant pressure and tension。
Beautiful appearance：The galvanized layer gives the square tube a silver white metallic luster，Improved the aesthetics of the product。
Superior processing performance：Easy to cut、Welding and other processing，Smooth surface after processing。
economic：Although the production cost is slightly higher than that of ordinary square tubes，But its durability significantly reduces maintenance costs during long-term use。
four、Specification and weight calculation
Specification representation：Usually measured by edge width×siding×wall thickness×The formal representation of length，for example50×50×5×6m。
weight calculation：The formula for calculating weight per meter is：4×wall thickness×（Side length－wall thickness）×0.00785。
five、application area
Construction field：Used for curtain wall frame、Roof support、handrail、Guardrails, etc。
Machinery manufacturing：Used for device framework、Supporting rods and other components。
power engineering：Used for laying wires and cables、Support for electrical equipment。
Chemical industry field：Used for transporting liquids、Pipelines for gases and solid particles。
automotive industry ：Used for body structure and chassis。
Furniture manufacturing：Used for table legs、Chair frame and other components。
six、Purchase precautions
Product standards：Choose products that meet national or industry standards。
galvanized layer thickness：The coating of hot-dip galvanized square tube is usually thicker than that of cold-dip galvanized square tube，Stronger corrosion resistance。
Manufacturer reputation：Choose well-known brands or reputable manufacturers。
test report：Request relevant testing reports，Confirm the performance indicators of the product。
VISUAL INSPECTION：Check if the surface is smooth、Is there a zinc tumor present、Defects such as missed plating。
seven、maintenance
Avoid direct sunlight：Long term exposure to sunlight may cause fading or damage to the galvanized layer。
Prevent mechanical damage：During transportation and installation，Avoid scratching or peeling off the galvanized layer。
regular inspection：Regularly check the integrity of the galvanized layer，Timely repair of damaged areas。
Galvanized square tube due to its excellent anti-corrosion performance and good mechanical properties，In architecture、Machinery manufacturing、Widely used in various fields such as electricity。Understand its production process、Performance characteristics and selection points，Helps to better select and use the material。
