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Inventories, net (Tables) | 9 Months Ended
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Sep. 30, 2018
Inventory Disclosure [Abstract] |
Schedule of Inventory | Inventories at September 30, 2018 and December 31, 2017 were as follows (in thousands):
| September 30, |  | December 31,
| 2018 |  | 2017
Pipe and connectors, net of allowance of $20,911 and $20,064, respectively | $ | 24,023 |  |  | $ | 33,620 |
Finished goods, net of allowance of $1,463 and $1,520, respectively | 18,142 |  |  | 14,541 |
Work in progress | 8,071 |  |  | 9,206 |
Raw materials, components and supplies | 20,689 |  |  | 19,053 |
Total inventories, net | $ | 70,925 |  |  | $ | 76,420 |

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