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DIN En1092-1 BS4504 Uni GOST ANSI ASME B16.5 JIS Bl RF Ss 304/316 DN80 Stainless Steel Forged Blind Flange Pn10/16 Class150#300# 5K10K20K Sorf Plff Bl Wn So, Find Details and Price about Forged Flanges GOST Flange from DIN En1092-1 BS4504 Uni GOST ANSI ASME B16.5 JIS Bl RF Ss 304/316 DN80 Stainless Steel Forged Blind Flange Pn10/16 Class150#300# 5K10K20K Sorf Plff Bl Wn So - ZHEJIANG CHENGJIU PIPELINE CO., LTD.