Product Specification
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| Payment Terms |
L/C,T/T |
Supply Ability |
20000Tons/Month |
| Delivery Time |
7 - 15 Days |
Corrosion Resistance |
Good corrosion resistance |
| Length |
6m - 12m |
Application |
Construction, machinery, shipbuilding, etc. |
| Surface Treatment |
Galvanized, painted, or untreated |
Thickness |
1.5mm - 12mm |
| Material |
Carbon steel |
Size |
Various sizes available |
| Shape |
C-shaped |
Strength |
High strength and good toughness |
| Tolerance |
According to standard or customer's requirements |
Weight |
Lightweight and easy to handle |
| Durability |
Long-lasting and durable |
Brand Name |
ZHONGQIANG |
| Model Number |
C140*50*20*3.0 |
Certification |
ISO |
| Place of Origin |
china |
| |
Analysis of Production Process, Product Characteristics and Application Scope of C-Section Steel Roll-Formed from Galvanized Steel Strip
I. Production Process: Refined Control Throughout the Cold Roll-Forming Process
C-section steel roll-formed from galvanized steel strip uses galvanized steel strip as the base material and is produced through four core links: "base material pretreatment - cold roll-forming - precision calibration - finished product cutting". The technical key points and control standards of each link are as follows:
Base Material Pretreatment Link
Hot-dip galvanized steel strips (or zinc-aluminum-magnesium coated steel strips) with a zinc content of ≥120g/㎡ are selected. First, the coiled steel strips are flattened by a leveler, and surface dust and zinc dross are cleaned synchronously with a brush; if the steel strips have slight warping, they need to undergo roller straightening via a straightener (straightening accuracy ≤0.5mm/m) to ensure the flatness of the base material meets the subsequent forming requirements and avoid C-section steel cross-sectional deviation caused by uneven base material.
Cold Roll-Forming Link
A multi-pass progressive cold roll-forming machine (usually 8-12 passes) is used to gradually form the steel strips according to the preset C-section steel cross-sectional parameters (e.g., height 50-300mm, flange width 20-100mm): The first pass of rollers positions the center line of the base material; in subsequent passes, the web, flange, and curled edge are sequentially bent and formed by adjusting the roller spacing and angle. The deformation amount of each pass is controlled at 5%-10% to avoid galvanized layer cracking caused by excessive single-pass deformation; during the forming process, the roller temperature is monitored in real-time (≤60℃) to prevent high temperature from damaging the adhesion of the galvanized layer.
Precision Calibration Link
The formed C-section steel enters the online detection system. The cross-sectional dimensions are detected by a laser diameter gauge (e.g., web thickness deviation ≤±0.1mm, flange perpendicularity deviation ≤1°). If the dimensions exceed the tolerance range, the system automatically feeds back to the cold roll-forming machine to adjust the roller parameters; at the same time, a flatness detector is used to check the straightness of the steel section (deviation ≤2mm per meter), and local bent parts are corrected twice via straightening rollers to ensure the finished product precision meets the installation requirements of construction, machinery and other fields.
Finished Product Cutting Link
According to the customer's order requirements, a CNC flying saw is used for fixed-length cutting (cutting length deviation ≤±1mm). During cutting, deburring treatment is performed synchronously (edge burr height ≤0.1mm) to avoid scratching operators or seals during installation; if the customer needs reserved installation holes, hole positions can be processed by a CNC punching machine before cutting (hole diameter deviation ≤±0.2mm, hole spacing deviation ≤±0.5mm), realizing integrated production of "forming - punching - cutting" and improving delivery efficiency.
II. Product Characteristics: Core Competitiveness Derived from Process Advantages
The characteristics of C-section steel roll-formed from galvanized steel strip directly come from the production process and base material advantages, mainly reflected in three dimensions: corrosion resistance, structure, and customization:
Strong Corrosion Resistance and Durability
The galvanized layer (or zinc-aluminum-magnesium coating) of the base material forms a dense passivation film, which can effectively isolate air, moisture, and corrosive media. Its service life can reach 15-20 years in ordinary atmospheric environments; if used in highly corrosive environments such as coastal areas and chemical industries, an additional epoxy zinc-rich primer (thickness ≥60μm) can be sprayed, increasing the salt spray resistance to more than 1000 hours, which is far longer than the service life of ordinary cold-rolled C-section steel (without galvanized layer) of 3-5 years.
High Structural Stability
Multi-pass cold roll-forming makes the mechanical properties of the steel section cross-section more uniform. The transition fillet between the web and flange (usually R=1.5-3mm) reduces stress concentration, and the flexural strength is 15%-20% higher than that of welded C-section steel of the same specification; at the same time, the galvanized layer is closely combined with the base material and not easy to fall off during cold roll-forming, ensuring structural integrity during long-term use and making it suitable for scenarios bearing dynamic loads (e.g., machinery frames, vehicle side beams).
High Customization Adaptability
It can be customized in cross-sectional dimensions (height 50-300mm, thickness 0.8-4.0mm), length (1-12m), and hole layout according to customer needs to adapt to different installation scenarios; for example, C-section steel for photovoltaic brackets can be customized with a "narrow flange + dense hole positions" design (flange width 30mm, hole spacing 100mm) to facilitate quick connection with photovoltaic modules; C-section steel for machinery frames can be customized with a "thick web + reinforced curled edge" design (web thickness 3.0mm, curled edge height 15mm) to improve load-bearing capacity.
Lightweight and Easy Installation
Compared with hot-rolled steel sections with the same load-bearing capacity, the weight of C-section steel roll-formed from galvanized steel strip is reduced by 20%-30% (e.g., for the specification of 100×50×2.0mm, the weight per meter is about 4.8kg), and the transportation cost is reduced by more than 15%; in addition, the finished product has a flat surface without welding scars, no additional treatment is required during installation, and it can be directly connected via bolts. A single worker can install 30-50 meters per day, greatly improving construction efficiency.
III. Application and Scope: Covering Multi-Field Scenario Needs
Based on the above characteristics, C-section steel roll-formed from galvanized steel strip is widely used in four fields: construction, new energy, machinery, and transportation. The specific scenarios and application advantages are as follows:
Construction Field
- Roof and Wall Purlins: Suitable for factories and logistics warehouses with a span of 6-12m, connected to steel roof trusses via bolts. The weather resistance of the galvanized layer can cope with roof rain erosion, reducing subsequent anti-corrosion maintenance costs.
- Light Steel Villa Support Components: Used for floor load-bearing beams and wall keels. The lightweight characteristic reduces the overall weight of the building, and the high structural stability ensures the wind and earthquake resistance of the house (able to withstand winds below level 8 and earthquakes below magnitude 6).
- Temporary Building Frames: Such as construction temporary buildings and prefabricated houses, which can be quickly assembled and disassembled for reuse. The galvanized layer prevents rust during short-term use, reducing the investment cost of temporary buildings.
New Energy Field
- Main Beams/Secondary Beams of Photovoltaic Brackets: Suitable for ground and roof photovoltaic power stations. Customized hole positions facilitate adjusting the inclination angle of photovoltaic modules (0°-45°). The strong corrosion resistance can cope with outdoor high-temperature, rain, and snow environments, ensuring the stable operation of the bracket system for more than 10 years.
- Internal Supports of Wind Turbine Towers: Used for fixing cables and maintenance platforms. The high structural stability can bear the vibration load of the tower, and the galvanized layer prevents rust caused by humid air inside the tower.
Machinery Field
- Equipment Frames: Such as automated production line racks and CNC machine tool covers. The customized cross-section can adapt to the layout of internal parts of the equipment. The lightweight characteristic facilitates equipment transportation and installation, and the galvanized layer prevents corrosion from workshop oil and coolant.
- Warehouse Shelf Beams/Columns: Used for heavy-duty shelves (load-bearing 500-2000kg/layer). The high flexural strength ensures that the shelves do not deform under long-term load-bearing, and the galvanized layer prevents rust of the steel section caused by moisture during goods storage.
Transportation Field
- Vehicle Side Beams/Support Parts: Such as truck compartment side beams and RV chassis brackets. The lightweight characteristic reduces vehicle fuel consumption. The high structural stability can bear the 颠簸 load during driving, and the galvanized layer prevents corrosion from road rainwater and deicing agents.
- Traffic Facility Frames: Such as highway guardrail supports and bus stop skeletons. The weather resistance can cope with complex outdoor environments, and the easy installation characteristic shortens the construction period of traffic facilities.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
-
Business Type:
Manufacturer,Exporter,Seller
-
-
Total Annual:
10000000-20000000
-
Employee Number:
100~300
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Ecer Certification：
Verified Supplier
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