• 12-28 2025

  Ductile Iron Vs. Steel Pipe: How To Make The Best Choice

  Ductile Iron vs Steel Pipe: Compare design, cost, corrosion resistance, and installation. Learn why DI piping is the superior choice for waterworks projects.
  
• 12-27 2025

  Ductile Iron Pipe Classes (K vs C) Explained

  Understand the difference between K and C class ductile iron pipes. A complete guide on DI pipe classification, pressure ratings, and applications for engineers.
  
• 12-02 2025

  Ductile Iron vs Cast Iron: What's the Difference?

  Ductile iron vs cast iron: Learn the key chemical and physical differences. Discover why Topsun's ductile iron castings offer superior strength and flexibility.
  

• 10-17 2025

  The unveiling ceremony of Shanghai Topsun Industrial Co., Ltd. was successfully held
  
• 10-14 2025

  تبحث عن شركاء في مجال الأنابيب على مستوى العالم: استغلال الأسواق الإقليمية ومشاركة النمو المتبادل
  
• 10-14 2025

  Topsun Joins the 2nd Phase of the 138th Canton Fair – Visit Us!
  
• 10-14 2025

  Notice on the Holiday Arrangement for National Day and Mid-Autumn Festival in 2025​