When manufacturing this Hot dip Galvanized C Channel, Shixinda Factory strictly follows the GB/T 13912 standard. The zinc layer thickness is ≥ 65 μm, with strong metallurgical bonding adhesion, and there is no zinc leakage in the entire section. Customized thick zinc layers can be provided for coastal and livestock farm environments with high corrosion resistance. It can be used outdoors for maintenance-free for over 20 years. The inner rolled edge section design is lightweight and high-strength, saving materials with the same load-bearing capacity. The standard installation holes are pre-processed by CNC, making on-site construction convenient and significantly shortening the construction period.
Shixinda has a complete range of specifications, covering the entire series from C80 to C250, with thicknesses of 1.5 - 3.0 mm. Length and hole spacing can be customized as needed, and the size tolerance is strictly controlled. Relying on its own production line for full-process quality inspection, the straightness and uniformity of the zinc coating meet the standards, and the product is straight and free of distortion upon leaving the factory. Compared with ordinary black pieces and electro-galvanized profiles, it has prominent advantages in corrosion prevention, structure, and overall cost, and is suitable for engineering projects such as steel structure warehouses, distributed photovoltaic, and livestock sheds. It has sufficient stock, efficient delivery, and one-stop satisfaction for domestic and international engineering procurement needs.
1.Roof load-bearing purlins
2.Wall beam (wall purlin)
3.Main and secondary beams of photovoltaic support structure
4.Lightweight steel structure secondary load-bearing components
Core positioning: Outdoor high-corrosion-resistant lightweight cold-formed enclosure / support structural components, addressing the problem of steel structure rusting easily in outdoor, humid, and corrosive environments.
Anti-corrosion advantages (unique core selling point of hot dip galvanized C-channel)
The zinc layer thickness of Hot Dip Galvanized C-channel is ≥ 65 μm. The zinc-iron alloy layer is metallurgically combined with the steel, with extremely strong adhesion and is unlikely to fall off upon impact;
Full section coating with folded edges, inner bevels, and openings, no missed coating, isolating water vapor, acids, alkalis, and salt fog;
Outdoor service life of 20–30 years. It is recommended for use in high-corrosion environments such as coastal areas, chemical plant areas, and livestock farms;
No need for later painting maintenance, significantly reducing the cost of factory operation and renovation.
C-shaped with rolled edges, the section's moment of inertia and torsional strength have significantly increased, making it less prone to bending and deformation;
Lightweight and high-strength, with less self-weight than channel steel under the same load, reducing the load on the main steel frame;
Regular section, stable bending and wind pressure resistance performance, suitable for large-span factory roofs and walls.
Factory prefabricated punching (bolt holes / self-drilling screws), no need for secondary hole drilling at the site, reducing damage to the coating layer;
Uniform dimensions, simple splicing and connection, with dedicated galvanized connection parts;
Good straightness of the profiles, no twisting, high flatness when installed on walls or tiles, and a neat appearance.
One-time galvanizing process, eliminating the need for on-site rust removal and painting of anti-corrosion coatings, shortening the construction period;
Extremely long maintenance-free period, compared to black sheet spray-painted C-channel steel, the long-term overall cost is lower;
Batch standardized production is possible, with a wide range of available specifications, and fast delivery.
Mainstream Standard Series: C80, C100, C120, C140, C160, C180, C200, C220, C250. Example complete annotation: C160×60×20×2.5
160:Flange height (total section height)
60; Width of both flanges
20; Width of end internal rolled edge
2.5; Thickness of steel strip base plate
Common thicknesses; 1.5, 1.8, 2.0, 2.2, 2.5, 2.75, 3.0 mm (more commonly used for photovoltaic supports 2.0–2.5 mm)
Applicable Standard; GB/T 13912 "Technical Requirements and Test Methods for Hot-Dip Galvanized Coatings on Ironware"
Zinc Layer Weight; Average zinc layer ≥ 600g/㎡, local minimum ≥ 420g/㎡； Zinc Layer Thickness ≥ 65μm
Appearance Requirements; Uniform silver-gray surface, allowed a few zinc flakes, no missing coating, peeling, zinc leakage, or zinc accumulation lumps
Salt Spray Performance; Neutral Salt Spray Test for 500h or more without red rust
Q235B; Yield Strength ≥ 235MPa, suitable for ordinary workshops and dry areas
Q355B; Yield Strength ≥ 355MPa, recommended for large-span workshops, high wind pressure areas, and main photovoltaic support applications
Tensile Elongation, Cold Bending Performance meet standards, no cracks during bending and forming
Height, Flange Width Tolerance; ±1.0mm
Thickness Tolerance; ±0.12mm
Straightness; ≤ L/1000 (L is the single branch length), no obvious distortion
Hole Punching Dimension Deviation; ±0.5mm
Standard Lengths; 6m, 9m, 12m, can be customized to any length as needed
Hole Punching Configuration; Standard roof truss holes (connection holes), roof nail holes, photovoltaic support installation holes, can be arranged as needed with hole spacing
Cutting Treatment; Complete galvanizing on the cutting end surface, no large-area zinc loss
Ordinary Inland; Standard model with 65μm zinc layer
Coastal Salt Spray, Livestock Farms, Chemical Industrial Zones; Customized model with thickened zinc layer 85–100μm
Low Temperature and Severe Cold Regions; Select Q355B material with qualified low-temperature impact performance
Address
S213 Jinghai District, Tianjin City, China
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