    <SEC-DOCUMENT>0001171843-18-002474-index.html : 20180402
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    ACCESSION NUMBER:		0001171843-18-002474
    CONFORMED SUBMISSION TYPE:	6-K
    PUBLIC DOCUMENT COUNT:		28
    CONFORMED PERIOD OF REPORT:	20180329
    FILED AS OF DATE:		20180402
    DATE AS OF CHANGE:		20180402

    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:		18730453

    	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
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