stainless steel flange 1) Grade: 321, 304, 304L, 316, 316L, 317, ... so on. 2) Standards: /ASTM/ASME/DIN/JIS and etc Stainless steel flange Features:1) size: DN10-DN 1200,150#-2500 ... ,we assure of our best attention all the time. type stainless steel flange sizeDN10-DN 1200,150#-2500#grade321, 304, 304L ...