<SEC-DOCUMENT>0001292814-19-001817-index.html : 20190509
<SEC-HEADER>0001292814-19-001817.hdr.sgml : 20190509
<ACCEPTANCE-DATETIME>20190508213818
ACCESSION NUMBER:		0001292814-19-001817
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		16
CONFORMED PERIOD OF REPORT:	20190331
FILED AS OF DATE:		20190509
DATE AS OF CHANGE:		20190508

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NATIONAL STEEL CO
		CENTRAL INDEX KEY:			0001049659
		STANDARD INDUSTRIAL CLASSIFICATION:	STEEL WORKS, BLAST FURNACES & ROLLING & FINISHING MILLS [3310]
		IRS NUMBER:				000000000
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		6-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14732
		FILM NUMBER:		19808570

	BUSINESS ADDRESS:	
		STREET 1:		RUA LAURO MULLER
		STREET 2:		116 36 ANDAR
		CITY:			RIO DE JANEIRO RJ BR
		STATE:			D5
		ZIP:			00000
</SEC-HEADER>
<DOCUMENT>
<TYPE>6-K
<SEQUENCE>1
<FILENAME>sidpr1q19_6k.htm
<DESCRIPTION>RESULTS FOR THE FIRST QUARTER OF 2019
<TEXT>
Document 1 - file: sidpr1q19_6k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>bottom.gif
<TEXT>
Document 2 - file: bottom.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>figura1.gif
<TEXT>
Document 3 - file: figura1.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>figura2.gif
<TEXT>
Document 4 - file: figura2.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>grafico1.gif
<TEXT>
Document 5 - file: grafico1.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>grafico10.gif
<TEXT>
Document 6 - file: grafico10.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>grafico2.gif
<TEXT>
Document 7 - file: grafico2.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>grafico3.gif
<TEXT>
Document 8 - file: grafico3.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>grafico4.gif
<TEXT>
Document 9 - file: grafico4.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>grafico5.gif
<TEXT>
Document 10 - file: grafico5.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>grafico6.gif
<TEXT>
Document 11 - file: grafico6.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>grafico7.gif
<TEXT>
Document 12 - file: grafico7.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>grafico8.gif
<TEXT>
Document 13 - file: grafico8.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>14
<FILENAME>grafico9.gif
<TEXT>
Document 14 - file: grafico9.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>15
<FILENAME>logo.gif
<TEXT>
Document 15 - file: logo.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>16
<FILENAME>logo_csn.gif
<TEXT>
Document 16 - file: logo_csn.gif

</DOCUMENT>
</SEC-DOCUMENT>