Carbon Steel Flange Plate with Stepped Ring Flange and Central Circular Bore

Bore shoulder step depth and flange OD concentricity are the governing callouts for a carbon steel stepped ring flange; step depth undersize prevents the mating component from seating against the shoulder face, while OD eccentricity creates an uneven gap at the bolted joint perimeter. Ningbo Bhin Precise Machinery (established 2009, Ningbo, Zhejiang) turns this carbon steel flange plate with stepped ring flange and central circular bore using CNC turning, with bore shoulder step depth, flange OD, and central bore diameter matched to your released dimensions specification. IATF16949 and ISO 9001 certification at Bhin's Ningbo facility (roughly 4,000 m²) governs traceability for hydraulic, pump, compressor, and industrial machinery stepped flange applications. Black oxide and electroplating provide corrosion protection on carbon steel flanges, serving aerospace, medical equipment, and robotics applications. For pricing, provide bore shoulder step depth, flange OD, and material grade from your print.