- pipe insulation
- pipe lagging
- 管: pipe; tube
- 绝缘: insulation; isolation; insul ...
- 套管绝缘子: bushing; pothead insulator; through insulator
- 瓷套管绝缘子: porcelain through insulator
- 导管绝缘接头: pipe i ulated joint; pipe insulated joint
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