Pull-out & Tensile Test Series

Joint integrity is the weak point of most buried pipe systems. These two machines pull the joint apart on purpose — one at elevated temperature over long durations for electrofusion and mechanical fittings, one at constant temperature for thin-walled drip irrigation tape.

埋地管道系统的薄弱点几乎总在接头。这两台设备专门把接头拉开：一台在高温下做长时拉拔（电熔与机械管件），一台在恒温下测薄壁滴灌带。

Not sure which test standard applies? The RTP pipe testing machine items maps every required test item to its standard and to the machine that performs it.
不确定该做哪一项试验？型式试验对照表按标准列出试验项目与对应机型。