... steel or carbon steel 3.Standard:JIS,EN,DIN,ANSI,ASME 4.Type: slip on , blind , WN ... Pressure Ratingclass 150 300 600 900 1500 2500PN 6 PN10 PN16 PN25 PN40 PN64JIS 5K 10K 16K ... LBS, 2500 LBS ASA 150, ASA 300, PN 6,10,16,25, 40,64,100,160 ETC. ... alloy ,cast iron ,brass , aluminum standardANSI : ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, ...