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A choke shape design is used for obtaining the satisfactory weld joint.
采用缩口的接触型式，能获得满意的电阻焊接头。
Pipe series: Elbow, tee, cross, movable joint, Bu core, reducer, pipe cap, choke plug, inside the wire, outside the wire, turned-over edge, increaser etc.
管件类： 弯头、三通、四通、活接头、卜芯、大小头、管帽、堵头、内丝、外丝、翻边、异径管。
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