Carbon Steel Flange Material:Carbon Steel,Stainless Steel Size:1/2"~80"(DN15~DN2000) Standard:ANSI SORF/FF Carbon Steel FlangeMaterial:Carbon Steel,Stainless SteelSize:1/2"~80"(DN15~DN2000)Standard:ANSI 150LBS 300LBS 600LBS 900LBS,SORF/FF WNRF/FF LJRF/FF SWRF/FF BLRF/FF THREADED 1)Surface Treatment:Anti-rust Oil, Transparent/Yellow/Black Anti-rust Paint,Zinc,Hot dipped Galvanized 2)Inspection: ...