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1.Whether the I-shaped steel is ordinary or light, because the cross-sectional size is relatively high and narrow, the two main sleeves of the moment of inertia cross-section are greatly different, so it usually can only directly use the internal bending components of the aircraft on the network or It can be made into lattice components. It is not suitable for axial compression members or members perpendicular to the web or bending members, so that its application range is very limited.
2. H-shaped steel is an economical cutting profile (others include cold-formed thin-walled steel and special-shaped steel plates, etc.). Due to the reasonable cross-sectional shape, the steel can be made more efficient and the cutting ability can be improved. Different from the general i-shaped steel, the flange of the h-shaped steel is widened, and the inner and outer surfaces are usually parallel, which is convenient for the connection of high-strength bolts and other parts. Its size constitutes a reasonable series, complete models, easy to design and select. (Except for I-beams of lifting beams)
3. The flanges of H-shaped steel are of equal thickness, with rolling sections and combined sections welded by three steel plates. I-beams are all rolled sections. Due to poor production technology, the slope of the flange inner edge is 1:10. The rolling of h-beam is different from ordinary I-beam. Only one set of transverse coils is used. Because the flange is wide and has no slope (or the slope is small), it is necessary to add a set of vertical rolls for simultaneous rolling. The rolling process and equipment are more complicated than ordinary rolling mills. The rolling height of h-shaped steel that can be produced in China is 800mm, which exceeds the welded composite section.
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PPGL steel is an innovative product by combining the strength of steel with the anti-corrosive capabilities of coatings. It is short for pre-painted galvalume steel coil, which uses aluminum-galvanized sheet as base metal. The material is exceptionally resistant to corrosion and high temperature up to 315 degrees. PPGL coils are used in a wide variety of applications such as roofing & cladding, doors & windows, lighting, vehicle manufacturing, furniture, home appliance, and shipbuilding industry. Wanzhi Steel offers PPGL coil with width of 600-1,250 mm, and the thickness of 0.12-1.2 mm. There are also various colors and patterns to choose from. Welcome to contact us!Read more
Corrugated steel roofing sheet is a versatile and durable material, which is ideal fo agricultural, residential and commercial applications. Wanzhi Steel uses PPGI or PPGL sheets to make different corrugated sheets to meet your needs. Also, there are various colors and patterns to suit various architectural styles. The popular design includes wave type, T type, trapezoidal type, tile, etc. The available thickness is 0.12 mm-1.2 mm and the effective width is from 750 mm to 1100 mm. The length can be customized. Welcome to contact us for more details!Read more
Galvalume Steel Coil is a kind of Alloy-Coated Steel Sheet widely used in building materials, household appliances,automobiles, environment, machinery, ships and many other fields. The surface coating of galvalume steel sheet is composed of 55% aluminium, 43.5% zinc and a small amount of other elements. 1. Heat reflectivity: Aluminum-coated galvanized steel sheet has a high thermal reflectivity, which is twice as high as galvanized steel sheet. It is often used as insulation material. 2. Heat resistance: Aluminum-zinc alloy steel sheet has good heat resistance and can withstand high temperatures of more than 300 degrees Celsius. 3. Corrosion resistance: The corrosion resistance of aluminized and galvanized steel coils is mainly due to the protective function of aluminium and aluminium. When zinc is abraded, aluminium forms a dense layer of alumina,which prevents further corrosion of corrosion-resistant substances. 4. Economy: Because the density of 55% Al-Zn is smaller than that of Zn, the area of galvanized steel sheet is more than 3% larger than that of galvanized steel sheet under the same weight and thickness of gold plating. 5. Easy to paint: Aluminum-coated galvanized sheet and paint have excellent adhesion and can be painted without pretreatment and weathering treatment. 6. Aluminum-galvanized steel sheet has a silver-white gorgeous surface.Read more
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