Square Rectangular Welded Carbon Steel Pipe Tube ERW SSAW LSAW Q195 Q345 S235 Seamless ASTM A106/API 5L Gr. B Sch40 Sch80

Hot-dip galvanized pipe is to make the molten metal react with the iron matrix to produce an alloy layer, so that the matrix and the coating are combined. Hot-dip galvanizing is to pickle the steel pipe first. In order to remove the iron oxide on the surface of the steel pipe, after pickling, it is cleaned in the tank of ammonium chloride or zinc chloride aqueous solution or mixed aqueous solution of ammonium chloride and zinc chloride, and then sent to the in the hot dip bath. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. The hot-dip galvanized steel pipe substrate undergoes complex physical and chemical reactions with the molten plating solution to form a corrosion-resistant zinc-iron alloy layer with a compact structure. The alloy layer is integrated with the pure zinc layer and the steel pipe substrate, so it has strong corrosion resistance.
Construction Use: Hall Structure, Sea Trestle, Airport Structure, Shipbuilding, Security Door Frames, Garage Doors,
Strengthening Liners of Steel Doors and Windows, Indoor Partition Walls, Cable Bridge Structures and Expressway
Safety Guards, Balustrade, Decorating, Residential, Ornamental Pipes.
The galvanized square tube is a hollow square section steel tube with a square cross-sectional shape and a shape obtained by hot-rolling or cold-rolling galvanized steel strip or galvanized coil as a blank after cold bending forming and then high-frequency welding. Or a galvanized square tube made of cold-formed hollow steel pipe which has been prepared in advance and then hot-dip galvanized.The galvanized square tube is a hollow square section steel tube with a square cross-sectional shape and a shape obtained by hot-rolling or cold-rolling galvanized steel strip or galva nized coil as a blank after cold bending forming and then high-frequency welding. Or a galvanized square tube made of cold-formed hollow steel pipe which has been prepared in advance and then hot-dip galvanized.
 

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