Stainless Steel Filter Pipes 1.Stainless steel 302,304,316,304 L, ... .ISO9001:2008 3.Pipe type 4.Best service Stainless Steel Filter PipesDetails: I, basic parameters:Materials: Stainless steel 302, 304, ... 316, 304 L, 316L sieve wire or low carbon steel galvanization silk.Outside diameter: 4 inches, 6 inches ... backwashing, last long, safety and reliability as well as low comprehensive cost.