Heavy-Duty Backbone Infrastructure

Gittermast

IEC 60826 Compliant - Feuerverzinkt - Über 50.000 Tonnen Jahreskapazität. Maximales Festigkeits-Gewichts-Verhältnis für kritische Netz-Hauptleitungen unter extremen Lastbedingungen.

Technische Spezifikationen

In mehreren Konfigurationen passend zu Spannung und Lastanforderungen Ihres Projekts verfügbar.

Parameter Einheit Spezifikation 1 Spezifikation 2 Spezifikation 3
Spannungsebene kV 110 220 500
Mast-Höhenbereich m 25-50 40-80 60-120
Gewichtsbereich ton 12-25 25-50 50-100
Material - Q345B Q345B Q420
Windlastklasse m/s 30 35 40
Korrosionsschutz - Feuerverzinkt Feuerverzinkt Feuerverzinkt
Auslegungsnorm - IEC 60826 IEC 60826 IEC 60826
Service Life years 30 30 30

Product Features

Engineered for durability, compliance, and project efficiency.

Überlegenes Festigkeits-Gewichts-Verhältnis

Die offene Gitterkonstruktion optimiert den Stahleinsatz bei hoher Tragfähigkeit. Ideal for long-span crossings and heavy-load configurations.

Beständigkeit bei Extremwetter

Engineered to withstand typhoon-force winds up to 40 m/s. Proven performance in cyclone-prone regions across Southeast Asia and Africa.

Flexible Configuration

Easily adaptable for multi-circuit configurations. Can accommodate OPGW and shield wire attachments for lightning protection.

Long-Span Capability

Extended height options for river crossings and valley spans. Custom designs available for special topographic requirements.

Manufacturing & Engineering Integrity

Precision-controlled fabrication processes with certified quality metrics for every production batch.

Steel Grade Metallurgy

Q345B: yield ?345 MPa, tensile 470 - 630 MPa, impact toughness ?34 J at ?20 - C (longitudinal, Charpy V-notch per GB/T 1591). Q420: yield ?420 MPa, tensile 520 - 680 MPa. Low-temperature impact verification mandatory for cold-region projects below ?10 - C ambient. Mill certificates with full chemical composition and mechanical property traceability provided per heat number.

Welding Integrity

Full-penetration structural welding per AWS D1.1 / EN 1090-2 execution class EXC3. 100% Non-Destructive Testing (NDT) via ultrasonic protocols (UT per ASTM E164). Acceptance criteria: no linear indications exceeding 3 mm, no rounded indications exceeding 6 mm. Welder qualification records (WQR) and welding procedure specifications (WPS) maintained for all joint configurations.

Anti-Corrosion Specification

In-house Hot-Dip Galvanizing (HDG) per ASTM A123 / EN ISO 1461. Average coating thickness ?86 ?m (zinc mass ?610 g/m - ). Coating uniformity verified by magnetic thickness gauge per ASTM E376. Adhesion test per ASTM D4541 with minimum pull-off strength 3.0 MPa. Supplementary epoxy zinc-rich primer available for high-corrosion coastal zones (C4 - C5 corrosivity class per ISO 9223).

ENVIRONMENTAL ADAPTABILITY

Global Grid Environmental Adaptability

Transmission towers engineered for Ultimate Limit State (ULS) performance under the world’s most demanding climatic and geographical conditions.

45 m/s Ultimate Wind Load

Structures verified per IEC 60826 reliability-based design framework for 3-second gust Windgeschwindigkeit of 45 m/s (terrain category II, return period 50 years). Ultimate limit state (ULS) load factor ?=1.5 applied to characteristic wind pressure. Serviceability deflection limit H/200 at working load. Foundation reactions computed for combined wind + ice loading scenarios.

High-Salt Coastal Corrosion

HDG coating supplemented with epoxy zinc-rich primer (minimum 80 ?m DFT) on lower splash-zone segments for C5 corrosivity environments per ISO 9223. 500-hour accelerated salt spray test per ASTM B117 on production sample coupons. Annual inspection protocol with coating thickness survey at years 1, 3, 5, and 10 of service life.

Seismic Redundancy (ULS)

Elastic response spectrum analysis per applicable seismic zone with peak ground acceleration (PGA) up to 0.4g. Redundant load-path design ensures progressive collapse prevention at ultimate limit state. Ductile detailing per capacity design principles: plastic hinge formation in bracing members before main legs. Inter-story drift limited to 1.5% under design earthquake.

Angebot anfordern for This Product

Our engineering team will review your requirements and respond within 24 hours with a detailed quotation and technical recommendations.

Technische Produktanfrage

Need a Different Configuration?

Custom designs available for special Spannungsebenes, wind zones, and project specifications.

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