PHFZ Series pleated filter cartridges use pleated type, thermal melting welding, multiple times backwashing, designed for iron removal in condensate water of power generation. Different precisions used as Start-up and operating filter elements. Its structure can be divided into three types: 7 parts, 2 parts and 4 parts. The 2parts type is welded of 40" and 30", the only one filter with 69mm diameter and integral outer support in domestic.