Steel Sheet & Coil Processing Services
Know About Panhua Group
  • China’s largest private steel sheet manufacturer
  • 48 production lines across 5 manufacturing facilities
  • Annual capacity of up to 15 million tonnes, with 800,000 tonnes in stock
E-mail: phsales1@panhuagroup.com
Mobile: +86-13390839803
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To get the quick quote, please specify the specification, grade, zinc layer thickness, surface with/ spangle pattern, coil inner diameter, coil weight, etc.

Pre-painted steel products are used by a wide range of customers, including:

  • Industrial construction companies
  • Home appliance manufacturers
  • Automotive manufacturers
  • Photovoltaic product manufacturers
  • Wind and nuclear power component manufacturers
  • Product distributors

Pre-painted steel products come with authoritative weather resistance test reports, including the following data:

  • ISO 16474 UV Aging: ΔE≤2 after 3,000 hours.
  • GB/T 10125 Salt Spray Test: No blistering after ≥1,000 hours.

Architectural pre-painted steel sheets have fully passed wind uplift tests and are compliant with standards such as GB/T 23930 and ASTM E1592. The product's high-strength S350GD steel substrate and concealed locking design provide wind uplift resistance of ≥3.5 kN/m.

Pre-painted steel products for home appliances meet food-contact safety standards and are certified in China (GB), the United States (FDA), and the European Union (EC). These products utilize a chrome-free passivation process and a zero heavy metal coating, in compliance with RoHS 2.0. They are tested to withstand ≥500 hours of salt spray with migration levels within compliant limits.

Pre-painted steel products for cold chain warehouses have excellent coating stability in low-temperature environments, ranging from -40℃ to 80℃. The products have passed the GB/T 13448 thermal cycling test, with an impact resistance of ≥5 J at -30℃ and no cracking on bending.

A five-layer protective packaging is used to prevent scratches:

  • Electrostatic PE film
  • 3D honeycomb paper
  • VCI anti-rust paper
  • AB flute carton
  • PLA corner protectors

This protective packaging, combined with a clean packaging process, ensures a scratch rate of ≤0.1%, significantly lower than the industry standard of 3-5%.

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