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We can provide you with the OEM products and services you want.

Product Details

Key features:

  • Optimized flow, high efficiency: Logarithmic or equal‑velocity spiral shape; proper diffuser angle; low vortex loss.

  • Rigid structure, high pressure resistance: Medium‑thick steel, continuous welds, stiffeners; withstands pulsating pressure without deformation or resonance.

  • Tight sealing, no leakage: Weld leak‑checked; gasketed flanges; optional labyrinth/carbon seals at shaft hole.

  • Wear & corrosion resistant: Hardfacing, rubber lining, or stainless steel sheet for dust/corrosive gas; marine‑grade coating.

  • Easy maintenance: Large units have access doors or cleanout ports; adjustable inlet nozzle clearance.

  • Flexible custom design: Inlet/outlet orientation and size per fan model, flow, pressure, space; optional acoustic or thermal insulation.

Applications: Marine boiler FD/ID fans, ventilation fans; land power plant primary/secondary/ID fans; industrial dust collection and material conveying fan casings; HVAC centrifugal fan volutes.

Qingdao Ruichen Power EP Equipment Co., Ltd. offers high‑quality marine and boiler auxiliaries including fan casings, air boxes, smoke boxes, manhole doors, steel platforms, and OEM custom metal structures. Welcome to inquire.



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  • +86-186-6175-9106

    +86-186-6175-9106