# Filing Detail

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001193125-13-112587
Filing Date
2013-03-18
Accepted
2013-03-18 16:27:30
Documents
15
Period of Report
2012-12-31

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | FORM 10-K | d444311d10k.htm | 10-K | 1202433
2 | EX-21 | d444311dex21.htm | EX-21 | 1060
3 | EX-23.1 | d444311dex231.htm | EX-23.1 | 1441
4 | EX-23.2 | d444311dex232.htm | EX-23.2 | 1840
5 | EX-31.1 | d444311dex311.htm | EX-31.1 | 10645
6 | EX-31.2 | d444311dex312.htm | EX-31.2 | 10498
7 | EX-32.1 | d444311dex321.htm | EX-32.1 | 3524
8 | EX-32.2 | d444311dex322.htm | EX-32.2 | 3498
15 | GRAPHIC | g444311g32q18.jpg | GRAPHIC | 47243
| Complete submission text file | 0001193125-13-112587.txt |  | 10012592

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
9 | XBRL INSTANCE DOCUMENT | nwpx-20121231.xml | EX-101.INS | 1690098
10 | XBRL TAXONOMY EXTENSION SCHEMA | nwpx-20121231.xsd | EX-101.SCH | 71411
11 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE | nwpx-20121231_cal.xml | EX-101.CAL | 114244
12 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE | nwpx-20121231_def.xml | EX-101.DEF | 192700
13 | XBRL TAXONOMY EXTENSION LABEL LINKBASE | nwpx-20121231_lab.xml | EX-101.LAB | 607676
14 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE | nwpx-20121231_pre.xml | EX-101.PRE | 448616

Mailing Address 5721 SE COLUMBIA WAY SUITE 200 VANCOUVER WA 98661
Business Address 5721 SE COLUMBIA WAY SUITE 200 VANCOUVER WA 98661 3603976250
NORTHWEST PIPE CO (Filer) CIK: 0001001385 (see all company filings)

EIN.: 930557988 | State of Incorp.: OR | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 000-27140 | Film No.: 13697996
SIC: 3317 Steel Pipe & Tubes