Cast steel strainer.(Gray iron, Ductile cast iron strainer is avaliable) (for oil, Gas, water) 1.Flanged connection: JB/T ... 79 Cast steel strainer.(Gray iron, Ductile cast iron strainer is avaliable) (for oil, Gas, water) Production Enforce Standard:Design and ... 12220 Cast steel strainer.(Gray iron, Ductile cast iron strainer is avaliable) (for oil, Gas, water)Specification: Model Connection PN(MPa ...