Stair Treads & Risers
Comprehensive electrical earth strip integration and complementary high-durability infrastructure assemblies manufactured under ISO 9001:2015 controls.
Analysis of high-altitude resistivity, permafrost seasonal shifts, and low-impedance grounding architectures designed for the Swiss Canton regulatory landscape.
| Profile Dimension | Steel Base Grade | Zinc Coating Thickness | Standard Yield (ReH) | Primary Application (CH) |
|---|---|---|---|---|
| 30 x 3.0 mm | EN 10025-2 S235JR | ≥ 70 μm (500 g/m²) | ≥ 235 N/mm² | Residential Foundation Earth, Equipotential Meshing |
| 30 x 3.5 mm | EN 10025-2 S235JR | ≥ 85 μm (610 g/m²) | ≥ 235 N/mm² | Industrial Substation Ring Conductor, SN 464113 |
| 40 x 4.0 mm | EN 10025-2 S275JR | ≥ 100 μm (715 g/m²) | ≥ 275 N/mm² | Swissgrid 50kV/110kV/380kV HV Grounding & Transformers |
| 40 x 5.0 mm | EN 10025-2 S355JR | ≥ 120 μm (850 g/m²) | ≥ 355 N/mm² | Alpine Railway Traction SBB/CFF/FFS, Tunnels & Hydro |
| 25 x 3.0 mm | EN 10025-2 S235JR | ≥ 70 μm (500 g/m²) | ≥ 235 N/mm² | Commercial Down Conductors, LPS Class III / IV |
Direct batch testing per EN 62561-2 for tensile strength, zinc adhesion, and mechanical flexibility without micro-cracking.
Engineering earthing infrastructure across the Swiss Confederation introduces unique geoelectric parameters. The Swiss Alpine ridge—characterized by crystalline bedrock, massive gneiss formations, limestone layers, and dry moraine topsoils—exhibits ground resistivity profiles that frequently exceed 2,000 to 5,000 Ohm-meters (Ω·m). Standard earthing rods driven vertically often encounter premature refusal due to shallow bedrock depths. Consequently, the primary grounding architecture relies overwhelmingly on continuous, uninterrupted horizontal grid earthing using hot-dip galvanised earthing strips (Fundamenterdungsband).
In accordance with Electrosuisse SNR 464113 and SEV guidelines, foundation earthing loops embedded within reinforced concrete base slabs (Fundamenterder) offer a predictable, low-impedance path to earth. However, unreinforced slab foundations and perimeter soil earth loops (Ringerder) demand hot-dip galvanised flat steel strips capable of enduring severe electrochemical corrosion over a multi-decade operational envelope. The zinc-iron alloy layers formed during our thermal dipping bath create an intermetallic metallurgical bond that prevents moisture infiltration and sacrificial zinc peeling, even under the mechanically abrasive stresses of Swiss construction sites and Alpine gravel fills.
The manufacturing process at our automated factory ensures that every flat earthing tape possesses smooth, rounded sheared edges, mitigating high electric field gradient hotspots that initiate localized corona discharges during lightning flashover events. Our premium low-silicon, low-phosphorus mild steel feedstocks (typically conforming to the Sandelin curve criteria where Si < 0.04% or 0.15% < Si < 0.25%) ensure uniform, defect-free hot-dip zinc layers.
The hot-dip galvanising occurs at controlled kettle temperatures maintained at approximately 450°C (842°F), fostering the sequentially ordered Gamma (Γ), Delta (δ), and Zeta (ζ) intermetallic iron-zinc layers topped by a ductile Eta (η) zinc outer barrier. The minimum average coating thickness meets or exceeds 85 μm (610 g/m²), well beyond baseline standards, guaranteeing exceptional passivity and prolonged design life when interfacing with aggressive soil types, tunnel seepage water, or variable pH mountain streams.
From alpine photovoltaic parks to rail transit corridors, our galvanised earthing tapes and steel grating assemblies deliver uncompromising safety and continuous low-resistance bonding.
Ground-mounted high-altitude solar arrays in Graubünden and Valais require equipotential grid bonding strips resilient to freezing soils, freeze-thaw expansion cycles, and extreme high-altitude atmospheric ultraviolet degradation.
Mission-critical colocation centers across Zurich, Geneva, and Zug demand ultra-low transient grounding impedance. Foundation loops and raised mesh access floors mitigate low-frequency harmonics and protect against electromagnetic transients.
Specialized 40x5mm and 50x5mm heavy strips serve as continuous traction return-current conductors and stray-current grounding pathways within rail tunnels, alpine pass turnouts, and catenary substations throughout the Gotthard and Ceneri corridors.
Facilities across Basel-Stadt and Basel-Landschaft utilize comprehensive equipotential grounding grids paired with electro-polished stainless steel and hot-dip galvanised platform gratings to manage washdown drainage and static mitigation.
Strategic structural shifts shaping next-generation grounding strip procurement across Swiss federal and cantonal energy infrastructure.
Switzerland's phased phase-out of nuclear baseload energy has triggered an unprecedented expansion in decentralized renewable power, particularly high-alpine ground solar and small hydro. This shift requires comprehensive, low-ground-potential equipotential networks to connect geographically dispersed inverter banks to Swissgrid's transmission spine.
The revised Swiss Low Voltage Installation Norms (NIN) demand fully verifiable foundation and perimeter ring earthing architectures. With contemporary insulated foundations (perimeter insulation, XPS wraps) decoupling standard rebar meshes from direct subsoil contact, the requirement for dedicated external galvanised ring conductors (Ringerder) has expanded exponentially.
Electrified transportation corridors require sophisticated grounding matrices to mitigate stray-current (Streustrom) electrolytic damage to adjacent buried metallic utility pipelines. Procurement protocols mandate certified corrosion-resistant zinc thicknesses, fully rated earth clamp fittings, and non-conductive FRP access gratings for adjacent transformer bays.
Precision electroforging capabilities, dedicated metallurgy labs, and rigorous European logistics management.
Our heavy industrial plants employ PLC-controlled manufacturing lines exerting over 100 tonnes of hydraulic pressure and roughly 2200 A of fusion current. The cross-bar to bearing-bar bond is completely monolithic—zero internal air voids, structural crack-free joints, and uniform electrical conductivity.
We manufacture custom earthing strips, punched down-lead straps, earthing busbars, and complex steel grating assemblies with precise round, square, or radial cut-outs. All edges are banded with solid flat steel, and components receive complete edge-protective zinc galvanisation without bare spots.
Procurement teams receive authentic material test certificates accompanying every production batch. Mechanical yield, elongation percentage, base chemistry (C, Mn, Si, P, S), and zinc immersion weight verifications are fully documented to streamline approval with Swiss engineering consultants.
Authoritative technical clarification on standards, corrosion resistance, coil dimensions, and Swiss customs logistics.