Slag is a grainy, grey and metallic byproduct of steel production that can be used to produce slag cement and composite cement. One of the most sustainable construction materials available, slag decreases greenhouse gas emissions and the use of virgin materials.

Shun Shing Group trades both granulated blast furnace slag and ground granulated blast furnace slag.

The company currently trades over 2 million tons of slag annually and continues to supply both established and developing markets.


Slag Tradeflow

Shun Shing Group sources slag from Japan, China, Malaysia, and India, and the company works with leading Korean steel mills such as Kobe Steel, POSCO, JFE, Vizag Steel and Nippon Steel & Sumitomo Metal Corporation (NSSMC) .

Destination markets for Shun Shing Group’s slag include Bangladesh, Vietnam, Australia, and the United Arab Emirates.

Ground Granulated Blast Furnace Slag (GGBFS) or GBFS


GGBFS is a more refined/processed product derived from slag. The raw slag is dried and ground into a fine powder. 

Shun Shing Group sources GGBFS from China. 

Slag Key Specifications

  • SiO2 > 36% Max
  • CaO > 38% Min
  • Moisture > 9% Max

Above are the key indicators of slag’s standard quality. Results vary depending on the origin of the commodity and the requirements of the buyer.