Se stai cercando un forte, rete metallica versatile che offre presa, flusso d'aria, e durata, steel raised expanded metal is an excellent choice. A differenza della lamiera stirata appiattita, ha fili in rilievo che creano texture, perfette per le passerelle, recinzioni di sicurezza, o accenti architettonici. Questa guida copre tutto ciò che devi sapere per scegliere, utilizzo, e installa questo materiale pratico.
1. Steel Raised Expanded Metal – Product Fundamentals
Steel raised expanded metal (chiamato ancheraised mesh Oraised steel grating) is made from a single steel sheet, giving it more strength than welded or woven mesh. It’s defined by its raised, diamond-shaped strands that form a textured surface. Here are the most common product forms:
| Product Type | Caratteristiche principali | Usi comuni |
|---|---|---|
| Raised expanded metal sheet | Flat, cut-to-size sheets (per esempio., 4ft×8ft) | Walkways, protezioni della macchina, shelf bottoms |
| Raised expanded metal panel | Larger, pre-assembled panels (for facades) | Architectural cladding, sunshade screens |
| Raised expanded metal roll | Continuous lengths (1–3m width) | Large-scale projects (per esempio., warehouse fences) |
| Raised steel grate | Thick strands (for heavy loads) | Trench covers, trailer ramps |
| Raised metal lattice | Small openings (for fine filtering) | HVAC filters, partizioni decorative |
Real Example: A construction company usedraised expanded metal sheet to make temporary walkways on a building site. The raised strands prevented workers from slipping in rain, and the mesh’s strength supported tool carts—saving the company from 2 potential slip-and-fall incidents.
2. Produzione & Production Processes
Steel raised expanded metal is made in a few key steps that turn a solid steel sheet into a textured mesh:
- Steel Coil Feeding: Primo, UN steel coil feeding system feeds a solid steel coil (cold-rolled or hot-rolled) into the expansion machine.
- Taglio & Allungamento: The machine uses sharp dies to cut slits in the steel sheet (this isdie cutting steel mesh). Poi, rollers stretch the sheet to create diamond-shaped openings—this step forms the “raised” strands. Unlike flattened mesh, it skips the cold-roll flattening step.
- Pattern Design: ILraised pattern die design determines the opening size (per esempio., small diamonds for filters, large diamonds for walkways).
- Line Speed Control: Expanded metal line speed is adjusted to ensure consistent openings—too fast, and the mesh can tear; troppo lento, and production is inefficient.
- Controllo qualità: Every batch is checked against standards likeASTM F1267 steel expanded metal EISO 9001 steel mesh to ensure strength and opening accuracy. Many factories also followISO 14001 for eco-friendly production.
Fun Fact: The “slit-and-stretch process” doesn’t waste steel—since it’s made from a single sheet, there’s no scrap (unlike woven mesh, which cuts wire into small pieces).
3. Material Specifications & Standard
To pick the right raised expanded metal, you need to know its material type and key specs. Here’s what matters:
Materiali comuni
| Tipo materiale | Key Traits | Ideale per |
|---|---|---|
| Carbon steel raised expanded metal | Conveniente, forte (ASTM A36) | Indoor walkways, protezioni della macchina |
| Galvanized steel raised mesh | Resistente alla ruggine (ASTM A123 coating) | Outdoor fences, trailer ramps |
| Stainless steel raised expanded metal | Corrosion-proof (SUS304/SUS316) | Food processing, marine projects |
Key Specifications
- Strand Thickness: Typically 1.5mm–10mm (thicker = stronger; 4mm–6mm is best for walkways).
- SWD/LWD: SWD (Short Way of Diamond) (per esempio., 25mm) ELWD (Long Way of Diamond) (per esempio., 50mm) describe opening size.
- Forza: Tensile strength raised mesh ranges from 400–600 MPa; yield strength steel mesh is 250–400 MPa (stronger than woven mesh).
4. Dimensions, Patterns & Open-Area Configurations
The size and pattern of raised expanded metal determine its use. Here are common options:
| Pattern/Size | Open-Area Percentage | Usi |
|---|---|---|
| 1/2 inch #13 raised expanded steel | ~60% | HVAC filters, small machine guards |
| 3/4 inch #9 raised mesh | ~50% | Shelf bottoms, decorative screens |
| 1 inch #13 raised metal | ~65% | Walkways, catwalks |
| 1-1/2 inch #16 raised steel | ~70% | Facade cladding, ombrelloni |
| Micro mesh raised steel | <30% (small openings) | Fine filtering (per esempio., oil filters) |
Open-Area Tip
Higher open-area percentage (per esempio., 70%) means more airflow/light—great for facades. Lower percentage (per esempio., 30%) is better for filtering or security (harder to climb through).
5. Finiture superficiali & Rivestimenti
To boost durability and appearance, raised expanded metal can have different finishes:
- Hot-Dip Galvanized: The mesh is dipped in molten zinc—best for outdoor use (resists rust for 10+ anni).
- Electro-Galvanized: A thin zinc layer applied via electricity—cheaper than hot-dip, good for indoor/outdoor with light moisture.
- Powder Coated: A dry powder baked on (polyester or epoxy)—comes in colors (nero, gray) and resists scratches (ideal for architectural projects).
- PVC Coated: A soft PVC layer—adds grip (great for flooring) and resists chemicals (used in food plants).
- Mill Finish: No coating—natural steel look, best for indoor, dry areas (per esempio., shelf mesh).
Esempio: A coastal restaurant usedstainless steel raised expanded metal with a marine-grade coating for its outdoor patio screens. The coating resists saltwater rust, and the mesh lets ocean breezes through.
6. Meccanico & Proprietà fisiche
Steel raised expanded metal’s strength and performance make it stand out:
| Proprietà | Typical Values (Acciaio al carbonio) | Why It Matters |
|---|---|---|
| Resistenza alla trazione | 450–550 MPa | Supports heavy loads (per esempio., tool carts on walkways) |
| Load Capacity | 300–800 lbs/sq ft (depends on strand thickness) | Safe for pedestrian traffic |
| Resistenza agli urti | Resiste 15 J of force (no cracking) | Doesn’t break if hit by tools or debris |
| Slip Resistance | Alto (textured raised strands) | Prevents falls on wet walkways |
| Weight per m² | 5–20 kg/m² | Easy to install (lighter than solid steel) |
Test Result: A lab test showed that 6mm strand raised mesh withstood 500 lbs/sq ft—enough for 2 workers plus tools.
7. Applicazioni & End-Use Industries
Steel raised expanded metal is used across industries for its versatility:
- Costruzione: Raised steel mesh catwalks, trench covers, Egradini delle scale (sicuro, slip-resistant).
- Sicurezza: Steel mesh security fences and machine guards (hard to climb/cut through).
- Architettura: Raised steel mesh façade cladding and sunshades (modern look, lets light through).
- Industriale: HVAC expanded steel filters, conveyor belt steel mesh, and mining screens (durevole, facile da pulire).
- Automobilistico: Radiator grille and trailer ramps (resists road debris).
Caso di studio: A solar farm usedgalvanized raised expanded metal for its panel supports. The mesh let wind pass through (reducing wind damage) and withstood outdoor weather for 5 years without rust.
8. Installazione, Fastening & Accessori
Installing raised expanded metal is easy with the right tools and accessories:
- Elementi di fissaggio: Utilizzoself-drilling screws (for wood/steel frames) Ograting clamps (for metal walkways). For outdoor projects, choose corrosion-resistant fasteners.
- Edging: Addangle iron edging raised mesh OU-edge trim to prevent sharp edges (safer for installation).
- Framing: Utilizzosteel expanded metal framing (galvanized or powder-coated) to support large panels (per esempio., facades).
- Suspension: For ceilings or overhead screens, utilizzosuspension rods to hang the mesh securely.
Installation Tip: Leave a 10mm gap between mesh sheets to allow for thermal expansion (prevents warping in hot weather).
La prospettiva della tecnologia Yigu
Alla tecnologia Yigu, consigliamosteel raised expanded metal for clients needing strength and texture. We supply custom-cut mesh—fromSUS316 stainless steel for marine projects to galvanized carbon steel for outdoor fences. We also provide installation guides, helping clients choose the right fasteners and edging. Our mesh meets ASTM and ISO standards, ensuring durability—we’ve helped construction and security clients cut maintenance costs by 30% contro. woven mesh.
Domande frequenti
- Is steel raised expanded metal more slip-resistant than flattened mesh?
SÌ! The raised strands create texture that grips shoes, making it better for wet walkways or ramps. Flattened mesh has a smooth surface, which can be slippery when wet. - Can it be used for outdoor projects?
Absolutely—choose galvanized or stainless steel with a marine-grade coating. This resists rust from rain/saltwater, lasting 10+ anni all'aperto. - How do I clean raised expanded metal?
For most dirt, hose it down with water. For grease (per esempio., in kitchens), use a mild detergent and a brush (the raised strands are easy to scrub). Avoid harsh chemicals—they can damage coatings.