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27 COMMITMENTS (Tables)
 12 Months Ended
Dec. 31, 2019
Commitments [Abstract]  
Schedule of take-or-pay contracts

As of December 31,2019 and 2018, the Company was a party to take-or-pay contracts as shown in the following table:  

 

    Payments in the period                      
Type of service   2018   2019     2020   2021   2022   After 2022   Total
                               
Transportation of iron ore, coal, coke, steel products, cement and mining products.   406,920   1,555,398     1,184,627   1,106,047   1,136,469   4,441,842   7,868,985
                               
Supply of power, natural gas, oxygen, nitrogen, argon, iron ore pellets, coal and clinquer.   658,166   966,405     391,750   33,317   24,940   200,121   650,128
                               
Processing of furnace sludge and slag resulting from the production process of pig iron and steel   9,467   56,024     21,164   11,571   11,571   3,599   47,905
                               
Manufacturing, repair, recovery and production of ingot casting machine units.   21,533   5,930     1,896               1,896
                               
    1,096,086   2,583,757     1,599,437   1,150,935   1,172,980   4,645,562   8,568,914