<SEC-DOCUMENT>0000892712-18-000330-index.html : 20180709
<SEC-HEADER>0000892712-18-000330.hdr.sgml : 20180709
<ACCEPTANCE-DATETIME>20180709164327
ACCESSION NUMBER:		0000892712-18-000330
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20180709
DATE AS OF CHANGE:		20180709

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NORTHWEST PIPE CO
		CENTRAL INDEX KEY:			0001001385
		STANDARD INDUSTRIAL CLASSIFICATION:	STEEL PIPE & TUBES [3317]
		IRS NUMBER:				930557988
		STATE OF INCORPORATION:			OR
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-44989
		FILM NUMBER:		18945126

	BUSINESS ADDRESS:	
		STREET 1:		201 NE PARK PLAZA DRIVE
		STREET 2:		SUITE 100
		CITY:			VANCOUVER
		STATE:			WA
		ZIP:			98684
		BUSINESS PHONE:		3603976250

	MAIL ADDRESS:	
		STREET 1:		201 NE PARK PLAZA DRIVE
		STREET 2:		SUITE 100
		CITY:			VANCOUVER
		STATE:			WA
		ZIP:			98684

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HEARTLAND ADVISORS INC
		CENTRAL INDEX KEY:			0000937394
		IRS NUMBER:				391078128
		STATE OF INCORPORATION:			WI
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		789 N WATER STREET
		CITY:			MILWAUKEE
		STATE:			WI
		ZIP:			53202
		BUSINESS PHONE:		414-347-7777

	MAIL ADDRESS:	
		STREET 1:		789 N WATER STREET
		CITY:			MILWAUKEE
		STATE:			WI
		ZIP:			53202
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>heartlandnorthwest13ga.htm
<DESCRIPTION>AMENDMENT NO. 2 TO SCHEDULE 13G
<TEXT>
Document 1 - file: heartlandnorthwest13ga.htm

</DOCUMENT>
</SEC-DOCUMENT>