To ensure optimal welding quality,it is essential to remove the galvanized layer at the weld joint first,You can use a hand grinder,sandpaper,or gas welding flame for cleaning,Failure to do so may lead to bubbles,sand holes,incomplete welding,as well as brittleness and reduced rigidity of the weld seam,For galvanized steel pipes with a diameter exceeding 100mm,flanges or sleeve-type special pipe fittings should be adopted for connection,The welding joint between the galvanized steel pipe and the flange must be galvanized for the second time to ensure corrosion resistance,

Galvanized welded pipes are widely used in construction,transportation,and agriculture,but their zinc coating often wears down quickly under abrasive conditions,This article explores practical methods to enhance their durability,focusing on coating upgrades and base material improvements,

Galvanized welded steel pipes for low-pressure fluid transportation (GB,T3091-1993),also known as galvanized welded steel pipes,commonly known as white pipes,It is a hot-dip galvanized welded (furnace welding or electric welding) steel pipe used for transporting water,gas,air oil,heating steam,warm water and other generally low-pressure fluids or other purposes,The wall thickness of steel pipes is divided into ordinary galvanized steel pipes and thickened galvanized steel pipes; The types of takeover ends are divided into non threaded galvanized steel pipes and threaded galvanized steel pipes,

Using low-quality carbon steel square tubes may seem to save initial procurement costs,but in reality it can bring huge safety hazards,high maintenance costs,increased construction difficulty and project delays,and ultimately lower product quality,

The steel pipe market prices continue to be chaotic,and low-priced resources are gradually being cleared