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Inventories, net
6 Months Ended
Jun. 30, 2019
Inventory Disclosure [Abstract]  
Inventories, net Inventories, net

Inventories at June 30, 2019 and December 31, 2018 were as follows (in thousands):
 
June 30,
 
December 31,
 
2019
 
2018
Pipe and connectors, net of allowance of $19,255 and $21,270, respectively
$
12,896

 
$
18,026

Finished goods, net of allowance of $905 and $1,354, respectively
27,071

 
22,608

Work in progress
8,964

 
8,285

Raw materials, components and supplies
26,220

 
20,463

Total inventories, net
$
75,151

 
$
69,382