Pp plastic fan

  Fan usage:
  For pumping wind containing corrosive acid and alkali gases in industrial plants
  Exhaust wind of different kinds of gases in chemical laboratory equipment
  Ventilation for use in biological laboratories
  Exhaust from purification equipment used to remove odors

  Exhaust wind used in coastal areas prone to moisture decomposition of corrosive areas Models & amp; parameters: Please refer to the model and parameters of centrifugal fan on this site, most centrifugal fans can be made of PP material

Lining Processes and Application Limits

A steel lining is not a single coating. The process chain runs from grit blasting to Sa2.5, adhesive application, sheet or hot pressing, vulcanisation (autoclave or ambient), spark testing, thickness measurement, to flange turn-up and weld treatment. A failure at any step shows up later as blistering, debonding or a local perforation.

An all-PP fan suits small and medium air flows; larger flows or pressures can use PP-lined construction, while oxidising or high temperature media move to PTFE-lined design.

Lining type	Base and lining	Typical temperature	Media and process notes
Rubber lining	Steel + natural or butyl rubber	Usually up to 80 C	Dilute acids and abrasion; sheet applied after blasting, autoclave cured
Plastic lining	Steel + PP, PE or PVDF	Commonly 60 to 120 C	Acids, alkalis and salts; hot pressed or loose lined, flanged seal
PP-lined	Carbon steel + polypropylene	Commonly up to 100 C	Acids, alkalis and salts; sheet or roll lining, double welded seams
PE-lined	Carbon steel + polyethylene	Commonly 60 to 70 C	Abrasion and low temperature; ambient solids bearing media
PTFE-lined	Carbon steel + PTFE	Commonly -180 to 260 C	Strong acids, alkalis and oxidisers; isostatic or loose lining, flanged seal
Natural rubber lining	Carbon steel + natural rubber	Commonly up to 70 C	Dilute acids and solids; bond strength checked after cure
Butyl rubber lining	Carbon steel + butyl rubber	Commonly up to 90 C	Good gas tightness and weathering; suitable for gas bearing media

Concentration, temperature, solids content and oxidising components should be written into the technical agreement. After lining, the fan is performance tested to GB/T 1236, balanced to GB/T 9239.1, and the lining is spark tested and thickness checked.