Paper sprue tube

Reducer/reducing piece/reducer pipe

Brief Introduction of Paper Sprue Tube

The Paper Sprue Tube is the latest environment-friendly and energy-saving product for casting grandly launched by our company which is an ideal substitute for ceramic sprue tube.

This product was developed by the company’s professional R&D team and experts together with professors from Xi’an Jiaotong University through years of repeated practice. It is mainly applied to casting methods such as LFC (Lost Foam Casting), EPC(expendable pattern casting, or FMC, Full Mold Casting), traditional Sand Casting and Precoated Sand Casting. It plays a positive role in reducing the reject rate, improving the quality of reclaimed sand and reducing the intensity of operations. It is the first of its kind in China. And it will be a revolution in the runners for casting industry. Learn more>

The paper sprue tube can improve castings quality, reduce scrap, improve the quality of reclaimed sand, reduce work intensity.


  • Al2O3:    10-15%
  • SIO2;      40-45%
  • FE2O3:     0.8-1.5%
  • K2O + Na2O: 0.3-0.5%


  • Colour: brown
  • Refractory: 1500oC
  • Max Casting Temperature available: 1460oC