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  • Q Why choose Ningbo Zhongzheng Steel Grating as your supplier?

    A We combine premium manufacturing with global export expertise. Operating from our over 3,000m² factory with complete, in-house production lines, we provide competitive pricing and full customization across steel, stainless, and aluminum gratings. Backed by full ISO and CE certifications, our products strictly comply with European, Australian, and international project standards.
  • Q What information is required for a quotation?

    A To provide an accurate quotation, please share product type, dimensions, bearing bar size, spacing, material grade, surface treatment, quantity, and destination port if available.
  • Q Can you provide Mill Test Certificates and third-party inspection reports?

    A Yes. Transparency and traceability are core to our quality management system. If customer has extra requirement, we will provide a Mill Test Certificate (MTC) detailing the chemical composition and mechanical properties of the raw material. We also welcome and regularly cooperate with international third-party inspection agencies such as SGS, BV, or TÜV to conduct pre-shipment inspections per the client's request.
  • Q Can you support international projects and exports?

    A Yes. We have extensive export experience serving customers in Southeast Asia, Europe, Australia, North America and the Middle East, with project support from design to delivery.
  • Q Do you provide drainage and trench drain solutions?

    A Yes. In addition to grating products, we manufacture stainless steel trench drains, linear drains, wedge wire grates, heelguard grates, and customized drainage systems for commercial and industrial applications.
  • Q What finishing options are available for steel, stainless steel, aluminum, and FRP grating?

    A Different grating materials require different finishing treatments:
    Carbon Steel Grating: Hot-dip galvanized, painted, or untreated.
    Stainless Steel Grating: Pickling and passivation, electropolished, or mill finish.
    Aluminum Grating: Mill finish, anodized.
    FRP Grating: UV-resistant resin surface with optional anti-slip finish.

  • Q What is the difference between welded and press-locked grating?

    A Welded grating provides high strength and is commonly used for industrial applications. Press-locked grating offers a cleaner architectural appearance and is often selected for commercial and public projects.
  • Q Can you manufacture custom-sized grating panels?

    A Yes. We provide fully customized grating solutions, including panel sizes, bearing bar dimensions, mesh spacing, load requirements, and fabrication drawings based on project specifications.
  • Q What standards do your grating products comply with?

    A Our grating products can be manufactured according to international standards including ASTM, ANSI/NAAMM(MBG531), BS4592, AS1657, and customer-specific project requirements.
  • Q What types of metal gratings does Ningbo Zhongzheng manufacture?

    A We specialize in a comprehensive range of industrial metal gratings, including carbon steel grating, stainless steel grating (including high-precision stainless wedge wire grates), and lightweight aluminum grating. With our complete in-house production lines, we can supply standard industrial panels, heavy-duty gratings, and custom-fabricated trench covers or stair treads tailored to your specific project requirements.  
Premium Industrial Grating Manufacturer Since 2016
 

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 manager@cnsteelgrating.com
 +86 13616561696
 +86 13616561696
 Room 135, Floor 1, Building 2, No.2, Danshuihong road, Binhai Economic Development Zone, Cixi, Zhejiang(One License, Multiple Addresses)
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