... :304,316,316L,314L etc2.flange Size:1/2"-40" 3.Flange varieties : plate. slip-on, welding neck, threaded, socket weld ... ,stainless steel2.Standards:ASME,ANSI,API,JIS,JPI,DIN,UNI,BS ect3.Flange varieties:plate flange.slip-on flange,welding neck ...