Investment Cast Centrifugal Pumps ANSI B 73.1 m:- All these pumps follow the ANSI pump dimension as well as the ASA 150 flange dimension with raised faces. The metallic pumps are offered in various materials like Cast Iron, Cast Steel, SS304 (CF8), SS 316 (CF8M), SS316L (CF3M), Alloy20, Hastelloy – B&C, and CD4MCu etc.