Embedded Fin Tube Machine Circular Spacer Boxes , OD 25.4mm 31.75mm 38.1mm: Circular spacer boxes of type embedded aluminum finned tubes.This spacer rings are applicable for aluminum fin tubes, as extruded fin tubes, L/LL/KL fins tubes and most used for G base fin tubes.General core plian tube of finned tubes: OD is 25.4mm,31,75mm and 38.1mm.
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