Wear-Resistant Electro-Galvanized Steel Coil

FAQs

• Q: How do your pickling/electroplating/galvanizing processes ensure surface
  quality?

  A: We use multi-stage cleaning, neutralization, and closed-loop control systems (e.g., Sa 2.5 cleanliness for pickled coils, nanocrystalline coatings for electro-galvanized products) to ensure oxide-free, uniform surfaces compliant with ISO/ASTM standards.

• Q: Can you control and customize the coating thickness?

  A: Coating thickness is precisely regulated via process parameters (e.g., 3–50 g/m² for electro-galvanizing, 1.1–11.2 g/m² for tinplate) and can be customized to meet specific requirements.

• Q: What are the tensile/yield strength or hardness values of the products?

  A: Properties vary by process (e.g., cold-hardened coils: 1,200 MPa tensile strength;  Zn-Fe alloy coatings: 150–220 HV hardness).  Detailed data are available in technical specifications or upon request.

• Q: How to obtain the sample?

  A: Small-sized samples can be provided free of charge (freight collect). Please fill out the "Sample Application Form" and indicate the purpose.

• Q: Conventional specification range?

  A: Thickness: 1.5mm to 20mm (adjustable according to the production line)
  Width: 600mm - 2200mm (minimum/maximum dimensions must be marked)
  Inner diameter: Φ610mm (common) or Φ508mm (please confirm the company's production line)
  Outer diameter: Determined by the roll weight, usually ≤2500mm

• Q: What materials are used for your hot-rolled steel coils?

  A: Common materials: Q235B, Q355B, SS400, SPHC, Q345D, etc. (Adjustments need to be made according to the actual products of the company).
  Special material customization can be provided (such as high carbon steel, low alloy high strength steel, etc.).

• Q: Do you offer products with international certifications?

  A: Products are certified under ISO 9001, ISO 14001, IATF 16949, and industry-specific standards (e.g., ISO 5002 for surface treatment, ISO 11949 for tinplate).

• Q: How to package and transport?

  A: Conventional packaging: Moisture-proof paper + steel band binding, or customized packaging as per customer requirements (such as wooden cases, waterproof film);
  Transportation methods: road transportation, railway transportation, sea transportation. We can assist in contacting logistics or deliver goods according to the logistics specified by the customer.

• Q: How do you ensure product defect detection and consistency?

  A: Full-process quality control includes eddy-current testing (>0.1 mm crack detection), thickness gauging, and salt spray testing.  Each coil is supplied with a Material Test Certificate (MTC) and inspection report.

• Q: What is the minimum order quantity (MOQ)?

  Standard MOQ starts at just 5 tons with flexible trial orders: 
  - Hot-rolled/cold-rolled coils: 1 coil (~3 tons)  
  - Galvanized/tinplate coils: 2 coils  
  - Custom specifications: 15 tons (3 mixed specs allowed)