Recently even BHP was bearish about it:
BHP stopped short of saying exactly when China would hit peak steel, choosing to say that it was plateauing and would peak sometime in the 2019-2025 timeframe. One Belt One Road (OBOR) was seen contributing to 1% pa growth in Chinese steel demand while domestically demand is flat. BHP estimated the scrap to steel ratio in China at 22% today, rising to somewhere between 33-60% over the long term.
That is one very big range. Today I put the ratio at 18.4%: