In the construction of steel pipe scaffold on electric weldingmachine, vibrator and other electrical equipment should be placed in dry wood, operators shall wear insulating protective equipment.
在钢管脚手架上施工的电焊机、振捣器等用电设备应放置在枯燥的木板上，操作人员应穿戴绝缘的防护用品。
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This paper introduces a new connection technology of pipe groove machine. The advantages of this connection over the traditional welding, Falan connection and screw connection are elaborated.