As is well known, angle steel comes in various specifications, including equilateral and non equilateral.
Below are various specifications for your reference:
Equilateral angle steel: 25 * 25, 30 * 30, 40 * 40, 50 * 50, 56 * 56, 63 * 63, 70 * 70, 75 * 75, 80 * 80, 90 * 90, 100 * 100, 110 * 110, 125 * 125, 140 * 140, 150 * 150, 160 * 160, 180 * 180, 200 * 200, 220 * 220, 250 * 250
Unequal angle steel: 40 * 25, 50 * 32, 56 * 36, 63 * 40, 75 * 50, 90 * 56, 100 * 63, 100 * 80, 110 * 70, 125 * 80, 140 * 90, 160 * 100, 180 * 110, 200 * 125
Hot dip galvanized angle steel is formed by hot-dip galvanizing treatment.
The core principle is to immerse the steel parts that have been acid washed and pre coated in a molten zinc solution at about 430 ℃ -450 ℃, allowing zinc and iron to undergo metallurgical reactions, forming a strong protective layer composed of a zinc iron alloy layer and a pure zinc layer on the surface, which plays a dual role in isolating corrosive media and sacrificial anode protection of the steel base.
Hot dip galvanized materials are indeed widely used in fields such as construction, machinery, and chemical engineering. The core is the anti-corrosion ability brought by the layer of zinc, which allows steel to be used for a long time in outdoor, humid, and even corrosive environments. Architecture is its largest consumer market, while machinery and chemicals place greater emphasis on its durability and adaptability to harsh working conditions.
In the field of architecture, anti-corrosion and durability are the core
Construction is the field with the largest consumption of hot-dip galvanized materials, accounting for approximately 39% of the total consumption.
Used in light steel structure factories, roof panels, wall panels, drainage channels, ventilation ducts, partition walls and keels, it can ensure that the main body of the building does not rust for a long time.
Outdoor components such as balcony guardrails, stair handrails, and fence structures can withstand sunlight and rain after hot-dip galvanizing treatment, with a lifespan of up to 20-50 years.
Highway guardrails and bridge steel structures also extensively use hot-dip galvanized profiles to adapt to outdoor wind and rain environments.
Many well-known buildings, such as the Allianz Arena in Munich and the IKEA shopping mall in Copenhagen, use galvanized steel plates for their exterior walls and drainage systems to balance durability and appearance.
In the field of mechanical manufacturing: both strong and tough, suitable for processing
The mechanical field places greater emphasis on hot-dip galvanized materials that can continue to be processed while ensuring strength.
Stamping grade galvanized sheet can be made into various mechanical components and hardware accessories through cold stamping, and it is also widely used in automotive parts such as exterior panels, doors, and engine hoods.
Galvanized steel pipes and sections are commonly used to make mechanical structural components, conveying pipelines, and equipment frames, which can reduce maintenance costs in factories.
Hot dip galvanized I-beams and angle steels are common in equipment brackets and load-bearing structures due to their high strength and load-bearing capacity.
In recent years, with the trend of lightweighting in automobiles, galvanized hot formed steel with a strength exceeding 1500MPa has also been developed for use in safety components such as door crash beams.
Chemical industry: resistant to corrosive environments
In the chemical environment, there are many acids, alkalis, and salts, and ordinary steel will quickly corrode. The protective effect of hot-dip galvanizing is crucial here.
Hot dip galvanized steel pipes and angle steels can be used in chemical equipment, oil heaters, condenser coolers, etc., to resist acid and alkali mist corrosion.
Galvanized finned tubes are commonly used in heat exchangers and cooling systems in chemical workshops because the surface zinc layer can provide sacrificial anode protection.
The operation platform and maintenance channel of chemical plants extensively use hot-dip galvanized steel grating, which can extend the service life of ordinary steel from less than 3 years to more than 15 years in corrosive environments.
Attention: Since 2000, China has banned galvanized pipes as water supply pipes, which are now mainly used in engineering scenarios such as fire protection, electricity, and highways.
Overall, hot-dip galvanized materials rely on the core advantage of “anti-corrosion” to play the role of “durable parts” in different fields, allowing steel to last longer in outdoor, humid, and corrosive environments, reducing maintenance costs in the later stage.
