Ring Flange with Circular Bolt Pattern Flange and Stepped Inner Bore

Bolt circle diameter, hole pitch, and flange face flatness are the controlling dimensions for a circular bolt pattern flange; any deviation in bolt circle position shifts the bolted joint load path off-center, reducing clamping integrity at the mating face. YiRui machines this flange in Ningbo through CNC milling and turning, with bolt circle position and face flatness verified against your released print callouts before release. ISO 9001 certification at YiRui's Zhejiang facility governs dimensional records and machining traceability for aerospace, military, shipbuilding, and wind energy flange applications. 5-axis milling handles flanges requiring compound bore geometry, and passivation is available in-house for corrosion-resistant grades. To quote, we need your drawing showing bolt circle diameter, hole pitch tolerance, and flange face flatness callout. For a direct project quote from our ningbo team. Applications cover automotive, medical equipment, and engineering services.