Although phased array ultrasound technology can be used to detect the welding quality of electrofu-sion butt joints of polyethylene pipes,but the imaging is not visual and intuitive.Now it is proposed to use a radio-graphic digital imaging inspection system to carry out non-destructive inspection of electrofusion joints.The opti-mized exposure parameters were obtained through a series of comparisons in the laboratory.The defects of the elec-trofusion joint found in the actual inspection are the dislocation of the resistance wire,the hole and the socket is not in place.However,there is currently no standard for radiographic digital imaging inspection of polyethylene fused butt joints.For the safe operation and promotion of polyethylene pipes,the formulation of relevant standards is imminent.
PolyethyleneElectrofusion jointRadiographic digital imaging testingNon-destructive testing
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