<SEC-DOCUMENT>0001171843-18-002371-index.html : 20180329
<SEC-HEADER>0001171843-18-002371.hdr.sgml : 20180329
<ACCEPTANCE-DATETIME>20180329172030
ACCESSION NUMBER:		0001171843-18-002371
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180328
FILED AS OF DATE:		20180329
DATE AS OF CHANGE:		20180329

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TENARIS SA
		CENTRAL INDEX KEY:			0001190723
		STANDARD INDUSTRIAL CLASSIFICATION:	STEEL WORKS, BLAST FURNACES  ROLLING MILLS (COKE OVENS) [3312]
		IRS NUMBER:				000000000

	FILING VALUES:
		FORM TYPE:		6-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31518
		FILM NUMBER:		18723984

	BUSINESS ADDRESS:	
		STREET 1:		29 AVENUE DE LA PORTE-NEUVE
		STREET 2:		3RD FLOOR
		CITY:			LUXEMBOURG
		STATE:			N4
		ZIP:			L 2227
		BUSINESS PHONE:		212-376-6500

	MAIL ADDRESS:	
		STREET 1:		29 AVENUE DE LA PORTE-NEUVE
		STREET 2:		3RD FLOOR
		CITY:			LUXEMBOURG
		STATE:			N4
		ZIP:			L 2227
</SEC-HEADER>
<DOCUMENT>
<TYPE>6-K
<SEQUENCE>1
<FILENAME>f6k_032918.htm
<DESCRIPTION>FORM 6-K
<TEXT>
Document 1 - file: f6k_032918.htm

</DOCUMENT>
</SEC-DOCUMENT>