<SEC-DOCUMENT>0001527731-13-000001.txt : 20130131
<SEC-HEADER>0001527731-13-000001.hdr.sgml : 20130131
<ACCEPTANCE-DATETIME>20130131092004
ACCESSION NUMBER:		0001527731-13-000001
CONFORMED SUBMISSION TYPE:	5
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20121231
FILED AS OF DATE:		20130131
DATE AS OF CHANGE:		20130131

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Guy Henry L
		CENTRAL INDEX KEY:			0001527731

	FILING VALUES:
		FORM TYPE:		5
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-19687
		FILM NUMBER:		13560990

	MAIL ADDRESS:	
		STREET 1:		89 SUMMIT AVENUE, SECOND FLOOR
		CITY:			SUMMIT
		STATE:			NJ
		ZIP:			07901

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SYNALLOY CORP
		CENTRAL INDEX KEY:			0000095953
		STANDARD INDUSTRIAL CLASSIFICATION:	STEEL PIPE & TUBES [3317]
		IRS NUMBER:				570426694
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0809

	BUSINESS ADDRESS:	
		STREET 1:		775 SPARTAN BLVD., STE 102
		STREET 2:		P O BOX 5627
		CITY:			SPARTANBURG
		STATE:			SC
		ZIP:			29304
		BUSINESS PHONE:		864-585-3605

	MAIL ADDRESS:	
		STREET 1:		P O BOX 5627
		CITY:			SPARTANBURG
		STATE:			SC
		ZIP:			29304

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BLACKMAN UHLER INDUSTRIES INC
		DATE OF NAME CHANGE:	19710510
</SEC-HEADER>
<DOCUMENT>
<TYPE>5
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>5</documentType>

    <periodOfReport>2012-12-31</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <form3HoldingsReported>0</form3HoldingsReported>

    <form4TransactionsReported>0</form4TransactionsReported>

    <issuer>
        <issuerCik>0000095953</issuerCik>
        <issuerName>SYNALLOY CORP</issuerName>
        <issuerTradingSymbol>synl</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001527731</rptOwnerCik>
            <rptOwnerName>Guy Henry L</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>89 SUMMIT AVENUE, SECOND FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SUMMIT</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07901</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2012-08-27</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>5</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>375</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>13.1</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3097</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>Cheryl C. Carter, Power of Attorney for Henry L. Guy</signatureName>
        <signatureDate>2013-01-31</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>powerofattorney_hguy.htm
<DESCRIPTION>POWER OF ATTORNEY FOR HENRY L. GUY
<TEXT>
<HTML>
<HEAD>
<META NAME="Generator" CONTENT="Microsoft Word 97">
<TITLE>Power of Attorney</TITLE>
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<BODY>

<FONT SIZE=2><P ALIGN="CENTER">Power of Attorney<BR>
Relating to Section 16 Reports</P>
<P ALIGN="CENTER"></P>
<P ALIGN="CENTER">&nbsp;</P>
<P>This Statement confirms that the undersigned has authorized and designated Cheryl C. Carter and Richard D. Sieradzki, and each of them, the true and lawful attorneys-in-fact and agents of the undersigned, with full power of substitution and resubstitution, for and in the name, place and stead of the undersigned, in any and all capacities, to sign any and all reports or amendments thereto required to be filed under Section 16 of the United States Securities and Exchange Act of 1934, as amended, and the regulations from time to time promulgated thereunder, and to file the same, with any exhibits thereto, with the Securities and Exchange Commission, and the undersigned hereby grants to such attorneys-in-fact and agents, and each of them full power and  authority to do and perform each and every act and thing requisite and necessary to be done, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirm all that said attorneys-in-fact and agents, or any of them, or their or his/her substitute or substitutes, may lawfully do or cause to be done by virtue hereof. The undersigned acknowledges that neither Cheryl C. Carter nor Richard D. Sieradzki is assuming, nor is Synalloy Corporation assuming, any of the undersigned's responsibilities to comply with Section 16 of the Securities Exchange Act of 1934.</P>

<P>&nbsp;</P>
<P>/s/ Henry L. Guy</P>

<P>Dated: August 10, 2011</P>
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</TEXT>
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</SEC-DOCUMENT>
