1,Type:ASTM carbon steel A105 flange 2,Stainless steel 3,Size:3/8"-160" 4,Standard :ANSI,JIS,DIN Product Description ASTM ... Series: CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900,CLASS 1500, CLASS 2500 European Series: PN 2.5, PN ... , PN 100,PN 160, PN 250, PN 320, PN 400VarietiesSO,WN,PL,BL,SW,THUsagepetroleum,chemical,industry,power,ship building,paper ...