Quarterly report pursuant to Section 13 or 15(d)

Acquisitions - Schedule Results of Operations Since Acquisition (Details)

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Acquisitions - Schedule Results of Operations Since Acquisition (Details)
3 Months Ended
Mar. 31, 2019
USD ($)
American Stainless Tubing, Inc.  
Business Acquisition [Line Items]  
Net sales $ 9,513,220
Income before income taxes 107,121
Marcegalia USA, Inc. - Galvanized  
Business Acquisition [Line Items]  
Net sales 6,692,235
Income before income taxes $ 346,403