Galvanized flat steel, also known as galvanized flat iron, is a long rectangular solid steel bar with a uniform cross-section. It is processed from hot-rolled ordinary flat steel through heat-galvanizing for anti-corrosion treatment. The product has a smooth surface, uniform thickness, and regular edges. It combines high strength, high toughness, and excellent rust prevention properties, and is a widely used basic material in building electrical, lightning protection grounding, steel structure reinforcement, and mechanical and electrical installation. Compared to round steel, flat steel has a larger contact area, more stable fixation, and more uniform force distribution. It is the preferred material for grounding projects, bracket reinforcement, and embedded components.
Material and Common Specifications Main Materials: National standard Q235B carbon structural steel, with pure material, good toughness, easy welding, easy bending, stable electrical conductivity, meeting the needs of most construction and industrial engineering projects; for heavy-duty conditions, Q355B high-strength material can be selected. Common Specifications (width x thickness): 20x3, 25x3, 25x4, 30x3, 30x4, 40x4, 50x5, 60x6, etc. Among them, 40x4, 50x5 are the most common specifications for lightning protection grounding and steel structure reinforcement. Standard Lengths: 6 meters per piece, supports customization cutting, bending, drilling, punching, and special processing, suitable for various on-site construction needs. Core Product Advantages Corrosion prevention and rust prevention, strong weather resistance: The overall hot-dip galvanized layer is dense and uniform, resistant to oxidation, resistant to rain erosion, resistant to damp corrosion, and does not rust easily in outdoor use, eliminating the need for subsequent painting maintenance, significantly reducing engineering maintenance costs. Uniform force distribution, stable structure: The rectangular flat cross-section has a large contact area, high fixation point matching degree, stable tensile, compression, and shear performance, less prone to deformation, and has better reinforcement and grounding effects than round steel. Excellent electrical conductivity: The surface zinc layer has uniform conductivity, stable resistance, and good conductivity effect. It is the standard material for building lightning protection, anti-static, and grounding main lines, fully meeting the electrical construction acceptance specifications. Excellent processing performance: Can be freely cut, bent, drilled, welded, straightened, with strong plasticity, suitable for various non-standard construction scenarios such as pre-burial, reinforcement, grounding, brackets, and hanging parts. Regular appearance, high acceptance rate: The surface is bright and flat, without oxide scale, rust spots, good straightness, aesthetically pleasing and neat on-site construction, suitable for high-standard construction site civilized construction requirements. Main Application Scenarios Galvanized flat steel has extremely strong versatility, with core applications concentrated in lightning protection grounding, steel structure, mechanical and electrical installation, and civil infrastructure: Building lightning protection and grounding projects: Roof lightning protection strips, grounding main lines, grounding busbars, equipment anti-static grounding, building foundation grounding grid; it is the core main material of the electrical grounding system. Steel structure engineering support: Roof and wall tension bars, steel structure reinforcement flat iron, roof truss tie components, frame stability supporting components. Mechanical and electrical pipeline projects: Pipeline fixed supports, equipment base reinforcement, bridge tray, air duct tray, mechanical and electrical seismic supporting components. Civil infrastructure projects: Wall reinforcement flat iron, pre-buried connection parts, component pull-connection fixation, curtain wall reinforcement accessories. Municipal outdoor projects: Guardrail reinforcement, street lamp grounding, advertising board grounding, outdoor steel structure anti-corrosion support, garden facility fixation parts. Key attributes
Exceptional Corrosion Protection for Long-Term Use With its Z10-Z29 galvanized coating, our flat steel provides robust defense against rust and oxidation. This makes it ideal for environments with high humidity, chemical exposure, or outdoor weathering. Businesses in steel round pipe production and galvanized round tubing assembly benefit from reduced maintenance costs and extended product lifespans.
Certified Global Quality Compliance As a professional galvanised steel pipe supplier, we ensure every batch adheres to ASTM, API, CE, and ROHS standards. This level of compliance guarantees that our products meet strict quality benchmarks, enabling seamless integration into international projects and export markets without additional certification requirements.
Custom Engineering & Processing Services Our facility offers complete customization, from altering dimensions to precision fabrication. This flexibility supports diverse industries—whether you’re a carbon steel pipe manufacturer needing specific tolerances or a construction firm requiring pre-fabricated elements for faster assembly.
Efficient Production and Fast Delivery Located in Tianjin Daqiuzhuang, one of China’s largest steel manufacturing hubs, we leverage a strong logistics network to deliver products in as little as 8-14 days. This ensures your supply chain remains uninterrupted, even for urgent galvanised steel pipe or steel round pipe orders.
Usage Scenarios
Professional Pipe Manufacturing Our galvanized flat steel is a core material for producing galvanised steel pipe, steel round pipe, and galvanized round tubing. Its combination of strength, corrosion resistance, and dimensional stability ensures long-lasting performance in fluid transport, structural frameworks, and mechanical systems.
Heavy-Duty Construction & Infrastructure Projects Used extensively in beams, supports, and reinforcement frameworks, our galvanized flat steel withstands heavy loads and harsh environments. Whether in commercial buildings, bridges, or agricultural structures, it guarantees structural integrity and reduced maintenance.
Industrial Tool & Machinery Production The mid-hard grade makes our steel perfect for crafting heavy-duty tools, machine parts, and industrial equipment components. Manufacturers benefit from its machinability, toughness, and resistance to wear, especially in production lines and fabrication plants.
Agricultural, Outdoor, and Marine Applications Farm equipment, fencing systems, storage racks, and marine structures require materials that resist corrosion in varied weather and environmental conditions. Our galvanized flat steel ensures these products remain functional and visually intact for years.
Custom Fabrication for Specialized Industries From architectural elements to custom vehicle frames, our ability to tailor dimensions and coatings means clients across automotive, shipbuilding, and engineering sectors can rely on us for bespoke solutions.
Galvanized Flat Bar Galvanized Flat Steel Hot Dipped Galvanized Flat Bar 1020、1050、1084、1095 A36、Q195、Q235、Q345、St37-2、SS400、S355jr Mild Steel Hot Rolled Serrated 0.12-6.00mm、2mm-7mm、3mm、4mm、5mm、6mm、8mm、10mm、12mm、15mm 6m AISI
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