The pipe material for nozzle neck shall be seamless, unless otherwise approved by Purchaser.

设备口颈部应为无缝管材，除非买方另外批准。

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If the ball makes no sense to try to clean up in time to plug the pipe material and re-testing until qualified so far.

若试球不通的，要及时清理管道的堵塞物并重新试验，直到合格为止。

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The allowable stress of the pipe material shall be chosen from the data of GB 50316 Design Specification for Industrial Metal Piping.

管子材料的许用应力可按GB 50316《工业金属管道设计规范》中的数据选用。

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The material then bonds to the inside of the pipe and the resin cures or hardens, creating a new pipe within the pipe and restoring the integrity of the drain or sewer.

BBC: Sewer renovation work to begin in Glastonbury