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IBR Approved Flanges Manufacturers IBR Approved Specification, Grades, Size, & Materials Specification - ASME B16.5 IBR Flange Size Chart - 1/2″ to 48″ Standards - BS, ISO 70051, DIN, BS 10, B16.47 Series A & B, API 605, API 6A Production technique - Forged, Heat-treated, and machined
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