... , ASME B16.47, ASME B16.36,DIN 86341-2000, DIN2505materialCarbon steel(ASTM A105, Q235,A350LF2,A350LF3,)Stainless steel(ASTM A182 F304, F304L,F316,F316L,F321 ... A182, F43, A276 S32750,A705 631,632,A961, A484, Alloy steel(ASTM A694 F42,F46,F52,F56,F60,F65,F70, A182 F12 ... 80); Blind Flanges(GOST12836-67); Wedling neck Flanges(GOST12821-80); Steel Butt-Welded Flanges GOST12821-80Pressure Class:PN=0.6--PN10 ...