带螺纹的钢导线管的英文

screwed steel conduit

• 带:    belt; girdle; ribb ...
• 螺纹:    screw thread; flig ...
• 的:    4次方是 The fourth po ...
• 钢:    sharpen; strop; wh ...
• 导线:    conducting wire; v ...
• 管:    pipe; tube