... carbon steel 3.Standard:JIS,EN,DIN,ANSI,ASME 4.Type: slip on , blind , WN ,SW--Methodby forging ,forged flange--Pressure Ratingclass ... PN10 PN16 PN25 PN40 PN64JIS 5K 10K 16K and 20k--Type:plate , slip on , weld neck , blind , threaded , and special mode--PaintingRust ... 6,10,16,25, 40,64,100,160 ETC. Available with NACE MR 01-75 material stainless steel , carbon steel , nickel ...