The supplier shipped the wrong flanges, so the pipeline installation was delayed by a week.

供應商寄錯了法蘭，所以管線安裝延誤了一週。

Please check the quotation for steel flanges before we confirm the order with the vendor.

在我們向廠商確認訂單前，請先核對鋼製法蘭的報價單。

During the factory tour, the engineer explained how each flange is welded and inspected.

參觀工廠時，工程師說明了每個法蘭如何焊接與檢驗。