Attached files
file | filename |
---|---|
EX-32.2 - EXHIBIT 32.2 - NORTHWEST PIPE CO | ex_223772.htm |
EX-32.1 - EXHIBIT 32.1 - NORTHWEST PIPE CO | ex_223771.htm |
EX-31.2 - EXHIBIT 31.2 - NORTHWEST PIPE CO | ex_223770.htm |
EX-31.1 - EXHIBIT 31.1 - NORTHWEST PIPE CO | ex_223769.htm |
EX-23.1 - EXHIBIT 23.1 - NORTHWEST PIPE CO | ex_223768.htm |
EX-21.1 - EXHIBIT 21.1 - NORTHWEST PIPE CO | ex_223767.htm |
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