<SEC-DOCUMENT>9999999995-13-000701.txt : 20130314
<SEC-HEADER>9999999995-13-000701.hdr.sgml : 20130314
<ACCEPTANCE-DATETIME>20130314001512
ACCESSION NUMBER:		9999999995-13-000701
CONFORMED SUBMISSION TYPE:	EFFECT
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20130313
DATE AS OF CHANGE:		20130314
EFFECTIVENESS DATE:		20130313

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:		EFFECT
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-186825
		FILM NUMBER:		13688979

	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>EFFECT
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0101</schemaVersion>

    <submissionType>EFFECT</submissionType>

    <act>33</act>

    <testOrLive>LIVE</testOrLive>

    <effectiveData>
        <finalEffectivenessDispDate>2013-03-13</finalEffectivenessDispDate>
        <finalEffectivenessDispTime>09:00:00</finalEffectivenessDispTime>
        <form>F-6</form>
        <filer>
            <cik>0001190723</cik>
            <entityName>TENARIS SA</entityName>
            <fileNumber>333-186825</fileNumber>
        </filer>
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</edgarSubmission>
</XML>
</TEXT>
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</SEC-DOCUMENT>
