... 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.,Ltd ... testing,hydraulic testing,spectrum testing and infrared control etc. 150# 300# 400# 600# 900# 1500# 2500# STAINLESS STEEL FLANGE