Mo nga waahanga riipene whakarewa,kowiri tirame te ductile (spheroidal graphite) maka rino e rua o nga koranu tino whakamahia na te mea ko teductile maka rinohe pai ake te mahi anti-waikura me te kowiri tira he pai te mahi i roto i te aukati wera me te aukati waikura. Ka whakamahia ratou mo te hanga:
- Nga Waea Rerehua me te Poipoi (Te rino whakarewa, te rino kowiri tira ranei),
- Kōpae Pūrererere (Stainless Steel or Ductile Iron),
- Nga Turu Takirua (Te rino whakarewa, te rino kowiri tira ranei)
- Ko nga tinana me nga uhi o te Puma Puawai (SS me te rino Ductile ranei)
- Pump Impellers and Covers (Stainless Steel, Duplex Stainless Steel)
- Nga Whare Pump (Rino Maka Kerei)

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