304 Stainless Steel Flange

Precision Pipeline Connection With Controlled Sealing

The 304 stainless steel flange creates a detachable joint between pipes, valves, pumps and process equipment. CNC turning, drilling and facing control the bore, bolt-circle position, outer diameter and sealing surface according to the approved drawing. The 304 grade offers dependable resistance to moisture, cleaning fluids and many industrial media, while the machined contact face supports stable gasket compression during assembly.

Production starts with a technical review of pressure conditions, flange geometry, connection method and mating components. Yijiang can process standard-style or non-standard configurations from customer drawings, including blind, threaded, slip-on and custom interface designs. Material certificates, identification marks and inspection points can also be confirmed before machining begins.

CNC Flange Machining and Dimensional Inspection

Each workpiece can pass through material verification, rough turning, finish turning, drilling, deburring and surface inspection. Controlled cutting parameters help limit chatter, uneven edges and tool marks across the sealing area. Inspection may cover flange thickness, bore diameter, bolt-hole spacing, flatness, perpendicularity and surface roughness.

Machining allowances and clamping methods are selected according to flange size and structural requirements. This helps maintain the relationship between the central bore, sealing face and mounting holes throughout the cutting process. Thread gauges, height gauges and coordinate measuring equipment may support checks on critical features.

Custom dimensions allow the component to match replacement pipelines, compact equipment layouts or special installation clearances. Surface finishing and identification marks can be added when the project requires traceability or a defined appearance.

Core Advantages & Applications

Common Applications

• Chemical Industry: Pipeline connection for chemical fluid delivery systems
• Food & Pharmaceutical Industry: Sanitary pipeline supporting parts
• Water Treatment: Pipe fittings for water supply and drainage systems
• General Machinery: Interface connection for various mechanical equipment

Before packing, the finished 304 stainless steel flange receives a final dimensional and visual check against the approved drawing. Yijiang coordinates drawing confirmation, machining, optional surface work and inspection in one production flow. This process helps control fit, sealing-face quality and batch repeatability across replacement parts, maintenance orders and new equipment builds.

Specification Table