According to statistics released by World Steel Association (WSA), China topped the list of crude steel producers in the period with 346.833 million tons.
Japan, India and the United States with 43.936 million tons, 41.822 million tons and 33.978 million tons respectively were listed in second, third and fourth places, the report said.
In May, Iran produced 1.79 million tons of crude steel, which is 3.17 percent higher than the figure for April, which was 1.635 million tons.
Global steel production in May amounted to 143.325 million tons, showing an increase of 0.89 percent compared with the figure for April which was 142.06 million tons.
WSA is the international trade body of the iron and steel industry. The association represents approximately 170 steel producers, including 17 of the world's 20 largest steel companies, national and regional steel industry associations and steel research institutes.
Its members account for around 85 percent of world steel production.