Twin Impeller Stainless Steel Pumps 1.Head upto 62m ... IP54,Continuous duty. 2WB (Twin impeller) series stainless steel centrifugal pumps, produced by advanced stamping and welding ... technology, the pump body, impeller and shaft ... safe use. Materials:Pump casing, back-cover, impeller and pump shaft: Stainless Steel SUS304 & SUS316LBracket ...