... ,F304,304L,316,316L,1Cr18NI9Ti,OCr18Ni9Ti with class PN0.25Mpa~PN16.0Mpa(class 150,class 300, class 400 ,class 600, class 1500 etc); 7,delivery time: usually ... ,Lap joint flanges, Plate flanges,etc.5. Pressure ratings :class:150 300 400 600 900 1500 and 2500, pn :6 10 16 ... , 600Lbs, 900Lbs, 1500Lbs, 2500Lbs, /PN6,PN10,PN16,PN20,PN25,PN40/ Class A, B, C, D, EstandardASME B16.5, ASME B16.47 ...