Manufacturers & Suppliers of ASTM A182 F904L BLRTJ Blind Flange, 52\" ASME B16.47 Class 400# Blind Flange Series A, ASME SA182 F904L BLRTJ Blind Flanges, ANSI B16.5 BLRTJ, DIN 1.4539 Blind Flange, UNS N08904 BLRF Flange, EN X1NiCrMoCu25-20-5, Japanese JIS SUS 904L, BS 904S13, AFNOR Z2 NCDU 25-20.