1.What are the core advantages of zinc coils for industrial shelf shelves?
Industrial warehouse environments may be dusty and humid, and in some industries (such as food and chemical), there may be occasional liquid splashes. Galvanized coatings can effectively prevent steel from rusting, significantly extending the shelf's lifespan and reducing maintenance costs.
2.What is the cost-effectiveness of using galvanized coils as industrial shelf shelves?
Compared with all-alloy anti-corrosion materials such as stainless steel, galvanized steel costs much less and is an excellent balance between performance and price.
3.Why are galvanized coils suitable for industrial shelf shelves?
High Strength and Strong Load-Carrying Capacity
Steel inherently has a high strength-to-weight ratio. Through appropriate structural design (such as ribs and hemming) and thickness selection, galvanized steel laminates can withstand static and dynamic loads ranging from hundreds of kilograms to several tons.
Easy to Process and Form
Galvanized coils can be easily processed into various sheet forms to meet diverse needs using advanced rolling equipment.
4.What are the common processing forms of galvanized sheet metal?
Flat Sheet
Description: The simplest form, galvanized coils are flattened and cut to size.
Advantages: Lowest cost, smooth surface.
Disadvantages: Poor rigidity, limited load-bearing capacity unless very thick sheets are used.
Ribbed Panels (The Most Popular Choice)
Description: Raised reinforcing ribs are pressed into a flat panel using a mold.
Advantages: This significantly improves the rigidity and bending strength of the laminate. At the same thickness, its load-bearing capacity far exceeds that of a flat panel. The ribs also provide a non-slip effect.
Expanded Metal/Expanded Wire Mesh
Description: Made from galvanized coils cut and stretched using specialized equipment, it forms a mesh-like steel sheet with diamond-shaped or hexagonal holes.
Advantages: Lightweight, breathable, fireproof, dust-resistant, and light-transmitting. Cost is generally lower than solid reinforced sheet metal.
Disadvantages: Relatively low load-bearing capacity, making it unsuitable for storing small items.
5.What are the important considerations and selection points?
Galvanizing Thickness (Zinc Weight)
Warehouse humidity varies, and the requirements for corrosion protection also vary. Common galvanizing coatings include regular spangled, zero spangled, and spangle-free. For humid environments, choose a material with a thicker zinc coating (e.g., >60g/m² on both sides).
Base Material and Thickness
Thickness: This is a key parameter that determines load-bearing capacity. Common thicknesses range from 0.4mm to 2.0mm, and the selection must be based on the load rating provided by the racking manufacturer.
Material: Low-carbon steel, such as SPCC and DC01, is typically used, offering good cold-working formability.
Edge Treatment
The exposed steel base is a common starting point for rust after shearing.
High-quality practices: Cut edges are deburred, polished, and coated with anti-rust paint or a zinc-chromium coating (such as Dacromet) for comprehensive protection.