Ni Oṣu Kẹrin ọdun 2021, iṣelọpọ irin robi ti awọn orilẹ-ede 64 ti o wa ninu awọn iṣiro ti World Iron and Steel Association jẹ awọn toonu 169.5 milionu, ti o pọ si nipasẹ 23.3% ni ọdun kan.

Ni Oṣu Kẹrin ọdun 2021, iṣelọpọ irin robi ti Ilu China jẹ toonu 97.9 milionu, soke 13.4 ogorun ni ọdun kan;

Iṣelọpọ irin robi ti India jẹ 8.3 milionu toonu, soke 152.1% ni ọdun kan;

Ijade irin robi ti Japan jẹ 7.8 milionu toonu, soke 18.9% ni ọdun kan;

Iṣelọpọ irin robi AMẸRIKA jẹ awọn toonu 6.9 milionu, soke 43.0% ni ọdun kan;

Iṣelọpọ irin robi ti Russia jẹ ifoju ni 6.5 milionu toonu, soke 15.1% ni ọdun kan;

South Korea iṣelọpọ irin robi ti wa ni ifoju ni 5.9 milionu toonu, soke 15.4% odun lori odun;

Iṣelọpọ irin robi ti Jamani jẹ ifoju ni 3.4 milionu toonu, soke 31.5% ni ọdun kan;

Iṣelọpọ irin robi ti Tọki jẹ 3.3 milionu tonnu, soke 46.6% ni ọdun kan;

Iṣelọpọ irin robi ti Brazil jẹ toonu 3.1 milionu, soke 31.5% ni ọdun kan;

Iṣelọpọ irin robi ti Iran jẹ ifoju ni awọn toonu 2.5 milionu, soke 6.4 fun ogorun ọdun ni ọdun