Galvanized C-shaped steel is a new type of steel made from high-strength steel sheets that are cold-bent and roll-formed. Typically, hot-dip galvanized coils are cold-bent to create a C-shaped cross-section.
What are the sizes of galvanized C-channel steel?
| Model | Height (mm) | Bottom - width (mm) | Side - height (mm) | Small - edge (mm) | Wall - thickness (mm) |
| C80 | 80 | 40 | 15 | 15 | 2 |
| C100 | 100 | 50 | 20 | 20 | 2.5 |
| C120 | 120 | 50 | 20 | 20 | 2.5 |
| C140 | 140 | 60 | 20 | 20 | 3 |
| C160 | 160 | 70 | 20 | 20 | 3 |
| C180 | 180 | 70 | 20 | 20 | 3 |
| C200 | 200 | 70 | 20 | 20 | 3 |
| C220 | 220 | 70 | 20 | 20 | 2.5 |
| C250 | 250 | 75 | 20 | 20 | 2.5 |
| C280 | 280 | 70 | 20 | 20 | 2.5 |
| C300 | 300 | 75 | 20 | 20 | 2.5 |
What are the types of galvanized C-channel steel?
Relevant standards: Common standards include ASME, ASTM, EN, BS, GB, DIN, JIS, etc. Different standards are applicable to different regions and application fields.
Galvanizing process:
1.Electrogalvanized C-Channel Steel:
Electrogalvanized C-channel steel is a steel product made by depositing a zinc layer on the surface of cold-formed C-channel steel using an electrolytic process. The core process involves immersing the channel steel as the cathode in an electrolyte containing zinc ions. Current is then applied to the steel surface, causing the zinc ions to precipitate evenly across the steel surface, forming a zinc coating typically 5-20μm thick. The advantages of this type of channel steel include a smooth surface, a highly uniform zinc coating, and a delicate silver-white appearance. The processing also offers low energy consumption and minimal thermal impact on the steel substrate, effectively preserving the original mechanical precision of the C-channel steel. This makes it suitable for applications requiring high aesthetic standards and in mildly corrosive environments, such as indoor dry workshops, furniture brackets, and light equipment frames. However, the thin zinc coating offers relatively limited corrosion resistance, resulting in a shorter service life (typically 5-10 years) in humid, coastal, or industrially polluted environments. Furthermore, the zinc coating has weak adhesion and is prone to partial detachment after impact.
2.Hot-Dip Galvanized C-Channel Steel:
Hot-dip galvanized C-channel steel is formed by cold-bending, pickling, and then immersing the entire steel in molten zinc at 440-460°C. Through chemical reaction and physical adhesion between the zinc and the steel surface, a composite coating of zinc-iron alloy and pure zinc with a thickness of 50-150μm (up to 200μm or more in some areas) is formed. Its core advantages are the thick zinc layer and strong adhesion, which can fully cover the surface, corners and inside of the holes of the channel steel to form a complete anti-corrosion barrier. Its corrosion resistance far exceeds that of electro-galvanized products. Its service life can reach 30-50 years in dry suburban environments and 15-20 years in coastal or industrial environments. At the same time, the hot-dip galvanizing process has strong adaptability to steel and can be processed regardless of the size of the channel steel. The zinc layer is tightly bonded to the steel at high temperatures and has excellent impact and wear resistance. It is widely used in outdoor steel structures (such as building purlins, photovoltaic brackets, highway guardrails), humid environment equipment frames (such as sewage treatment facilities) and other scenes with high corrosion protection requirements. However, its surface will appear slightly rough silver-gray crystal flower-like, and the appearance accuracy is slightly lower than that of electro-galvanized products. In addition, the processing process has high energy consumption and has a slight thermal impact on the steel.
What are the prices of galvanized C-channel steel?
Galvanized C channel steel Price is not a fixed value; instead, it fluctuates dynamically, influenced by a combination of factors. Its core pricing strategy revolves around cost, specifications, market supply and demand, and service value-added.
From a cost perspective, the price of steel (such as Q235, Q355, and other grades of hot-rolled coil) as the underlying raw material is the key variable. A 5% fluctuation in the market price of steel typically leads to a 3%-4% price adjustment for GI C channel.
Also, differences in galvanizing processes significantly impact costs. Hot-dip galvanizing typically costs 800-1500 RMB/ton more than electrogalvanizing (5-20μm thickness) due to its thicker zinc layer (50-150μm), greater energy consumption, and more complex process.
In terms of specifications, prices vary significantly depending on product parameters. For example, the market price for a standard C80×40×15×2.0 model (height × base width × side height × wall thickness) is generally between 4,500 and 5,500 yuan/ton. However, the price of a larger C300×75×20×3.0 model, due to increased raw material usage and increased processing difficulty, typically climbs to 5,800 to 7,000 yuan/ton. Customized lengths (e.g., over 12 meters) or special wall thickness requirements also incur an additional 5%-10% surcharge.
Furthermore, factors such as transportation costs (e.g., distance between production and use) and brand premiums also factor into the final pricing. Therefore, when purchasing, detailed negotiations with suppliers based on specific needs are essential to obtain an accurate quote.
If you want to buy galvanized c channel steel, China Galvanized Steel C Channel Supplier is a very reliable choice
China Royal Corporation Ltd
Address
Bl20, Shanghecheng, Shuangjie Street, Beichen District, Tianjin, China
Phone
+86 15320016383
Post time: Sep-16-2025