stainless steel flange Standard:ANSI,ISO,JIS,DIN,EN,UNI,BS,GOST Type:BL flanges Size:DN15-6000 Specification:1.Name: ... . stainless steel :astm a182,304l,304,316,3.Standard:din bs ansi jis ai mss4.Surface:Rusproof oil, black, yellow, galavanized ...