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          "sources": [
            {
              "name": "The Takeoff pipe schedule chart",
              "url": "https://www.thetakeoff.ai/pipe-schedule-chart"
            },
            {
              "name": "Octal Steel - ANSI B36.10 & B36.19 dimension chart (PDF)",
              "url": "https://www.octalsteel.com/wp-content/uploads/2018/01/steel-pipe-dimensions-chart-ansi-b36.10-36.19.pdf"
            }
          ],
          "checked_at": "2026-09-25"
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              "name": "The Takeoff pipe schedule chart",
              "url": "https://www.thetakeoff.ai/pipe-schedule-chart"
            },
            {
              "name": "SS Alloy steel pipe schedule",
              "url": "https://ssalloy-steel.com/blog/pipe-schedule-meaning/"
            }
          ],
          "checked_at": "2026-09-25"
        }
      },
      "unverified_schedules": []
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  ],
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}