S350GD+ZM Zinc-Aluminium-Magnesium Coated Steel: Evaluating Environmental Factors for PV Mounting Structures
Published
S350GD+ZM is a structural steel with a zinc-aluminium-magnesium coating; substrate strength and coating protection should be considered separately. For PV mounting structures, section, punching, cut edges, fasteners and site environment together affect material selection. Jiangsu Gaozhen handles enquiries by grade, dimensions and processing requirements.
S350GD+ZM: material and applications
S350GD+ZM is a structural steel with a zinc-aluminium-magnesium coating. The strength designation refers to the substrate, while the coating provides surface protection. At procurement, first clarify whether the part is primarily load-bearing or formability-driven: columns, inclined beams and purlins in PV mounting structures are usually selected for section load capacity, while small parts such as connection plates and clamps also involve punching and bending requirements. Substrate strength, coating thickness and coating quality should be specified separately in purchase requirements; the term “ZM” alone cannot cover all performance. The Gaozhen product catalogue lists PV applications as a reference for this grade, so buyers can use it to discuss coating quality and test methods with suppliers, but each project still needs evaluation against the installation environment.
Material-category reference: https://www.thyssenkrupp-steel.com/en/products/sheet-coated-products/structural-steel/structural-steel.html
Parts and processing steps for mounting structures
Columns, braces, beams and connectors in a photovoltaic support may require cut-to-length processing, slitting, roll forming, piercing or bending, depending on their sections and joints. Their processing routes need not be identical. Distinguish profile stock from connection-plate stock and reference each drawing in the purchasing list.
Pierced and cut edges expose the substrate, and fastener contacts can create crevices. Inspect burrs, distortion and fit on samples, then consider protection for inland, coastal or water-trapping locations. Include any on-site recutting, welding or coating repair in the installation and acceptance plan.
Purchasing requirements and rationale
When purchasing S350GD+ZM coils, besides substrate grade and dimensions, specify coating quality requirements and test methods—for example, coating mass or thickness tested according to an agreed method, with records retained. Finished dimensions should match leveling, punching and bending operations, and installation requirements such as hole tolerance, flatness and cut-edge burr should be included in the order to avoid assembly rework. The Gaozhen product catalogue can serve as a starting point for specification discussions, but the specific coating class and surface condition still depend on the project environment. Inland, coastal and water-retention locations have different requirements for coating and cut-edge protection, so conclusions cannot be based on the material name alone; buyers should state environmental conditions clearly so suppliers can propose a matching coating solution and processing advice.
FAQ: Does ZM mean cut edges need no protection?
The ZM designation indicates a zinc-aluminium-magnesium coating type and does not automatically mean all cut edges need no protection. Protection at punched holes, cut edges and fastener contact areas should be evaluated under the project protection plan, including environmental corrosivity, edge exposure and subsequent coating or sealing arrangements. Buyers can specify cut-edge treatment in the technical agreement rather than inferring from the grade alone.
S350GD+ZM dimensions and supply enquiry
The Gaozhen S350GD+ZM product page lists these catalogue dimensions: Thickness range: 0.25-3.0 mm; Width range: 1000/1250/1500 mm. These values support specification discussions; confirm the required combination of gauge, width and condition for the material.
Discuss substrate, coating, surface condition and blank dimensions separately, then coordinate stock with cut-to-length, slitting or forming needs.
Product details: View related product details
Products and processing enquiries at Jiangsu Gaozhen
Jiangsu Gaozhen Trading Co., Ltd. handles trading and processing coordination for steel sheet, coil and related metal materials. Customers can find a grade and discuss drawings, service conditions and manufacturing requirements.
The product range includes cold-rolled, hot-rolled, galvanized and other coated, pickled, spring-steel, carbon-steel and stainless sheet or coil, plus zinc-titanium / zinc-copper-titanium and copper-titanium alloys. For a mixed-material project, list S350GD+ZM and other grades as separate items with their own specifications.
Product catalogue: https://gaozhenmetal.com/en/products/
Enquire about S350GD+ZM at Jiangsu Gaozhen
For a S350GD+ZM enquiry, prepare the following information so the business team can review supply and processing against the actual component.
Material and dimensions: S350GD+ZM, drawing revision or specified requirements, gauge and tolerance, width, and cut length for sheets.
Project conditions: full substrate designation and coating suffix, coating and surface requirements, forming and subsequent finishing.
Purchase plan: trial or batch requirement, quantity, delivery destination and requested timing.
Choose “Send enquiry” in the floating assistant, complete product, dimensions, quantity and contact details, confirm consent and submit. A receipt reference confirms that the form has been saved in Gaozhen’s website inbox. A chat message alone is not a submitted enquiry form.
Alternatively, contact Wang Dawei at +86 13861182855 or dawei5373@126.com. Mention this S350GD+ZM article to help identify the product under discussion.
The business team confirms pricing, available specifications, stock and delivery against the enquiry.