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Revenues (Tables) | 3 Months Ended
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Mar. 31, 2020
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue by Product Group | The following table presents the Company's revenues, disaggregated by product group. Substantially all of the Company's revenues are derived from contracts with customers where performance obligations are satisfied at a point-in-time.
| Three months ended March 31,
(in thousands) | 2020 |  | 2019
Fiberglass and steel liquid storage tanks and separation equipment | $ | 3,419 |  |  | $ | 9,829 |
Heavy wall seamless carbon steel pipe and tube | 7,314 |  |  | 8,587 |
Stainless steel pipe and tube | 43,728 |  |  | 45,995 |
Galvanized pipe and tube | 6,203 |  |  | 6,692 |
Specialty chemicals | 14,033 |  |  | 13,701 |
Net sales | $ | 74,697 |  |  | $ | 84,804 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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