... steel flange,alloy steel flange 2) standard ASME,ANSI,API,JIS, 3) OD 1/2"-48" 1) carbon steel flange, stainless ... steel flange,alloy steel flange2) standard ASME,ANSI,API,JIS,3) OD 1/2"-48"Shijiazhuang Huize Pipe Fittings Co ... and infrared control etc. 150# A105 A 350 A 694 F 52,60,65,70 carbon steel flange