Galvanized strip rectangular tubes are common in everyday production. The galvanized strip rectangular tube, as its name suggests, is a rectangular galvanized tube. The galvanized belt tube is formed by cold-bending of the galvanized steel strip, so the zinc layer is relatively uniform, and the zinc slag is greatly reduced like the galvanized square tube, but it is because of this that the thickness of the zinc layer is relatively thin.galvanized steel pipe supplier
The thickness of the tube of the galvanized tube is usually thin for two reasons:
First, the galvanized strip tube is directly cold-formed by the galvanized strip steel. Because the zinc layer is thinner, the thicker the strip steel thickness, further damage the zinc layer during the cold bending process. Therefore, manufacturers of galvanized belts generally do not produce.
Second, because the galvanized square tube is a hot dip galvanizing process, the temperature of the zinc pool is particularly high, and when the square tube is heated, the straightness is reduced, that is, the tube which we usually call will be further bent. Therefore, the hot-dip galvanized square tube generally does not process the thin square tube.
From the above two points, we can see that if it is a thin-walled galvanized pipe, it is generally galvanized with a tube, and a thick-walled square tube is generally a hot-dip galvanized square tube.
The galvanized square tube is a new type of galvanized square tube in the market in recent years. With galvanized tube, economical and applicable, it will save you a lot of cost!
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.tinplate suppliers
galvanized square tube characteristic：
Zinc plating has stronger protection and strong corrosion resistance. The entire structure consists of zinc, forming a dense quaternary crystal that forms a barrier on the steel sheet, thus effectively preventing the penetration of corrosion factors. Corrosion resistance comes from the barrier function of zinc. When zinc is sacrificed in trimming, scratching, and scratching of the coating, zinc forms an insoluble oxide layer that acts as a barrier.
The use of galvanized square tube：
Since the galvanized square tube is galvanized on the square tube, the application range of the galvanized square tube is greatly expanded compared with the square tube. It is mainly used in curtain wall, construction, machinery manufacturing, steel construction projects, steel structure supports, steel structure engineering, billboards, agricultural and chemical machinery, furniture tubes, etc.square steel tubing for sale
Calculation of theoretical weight per metre of galvanized square tube
4*(side length-thickness)*0.00785*1.06*Thickness Among them, the side length and the wall thickness are in millimeters, and the value is directly substituted into the above formula, which is the weight per square meter, in kilograms.
For a square tube of 30 x 30 x 2.5 mm, the weight per meter can be calculated as follows: 4 x 2.5 x (30-2.5) x 7.85 = 275 x 7.85 = 2,158.75 grams, or about 2.16 kg.
When the wall thickness and the side length are in millimeters, the 4 x wall thickness x (side length – wall thickness) is calculated as the volume of the square tube per meter length, in cubic centimeters, and multiplied by the specific gravity of the iron per cubic The weight of 7.85 grams is the weight in kilograms per square meter.