SS 420 Slip-On Flanges

The SS 420 Slip-On Flange (SO Flange) is a popular forging component characterized by its bore being slightly larger than the pipe's outer diameter, allowing the flange to simply slip over the pipe. It is then secured to the pipe using fillet welds at both the inner and outer surfaces. This design simplifies alignment and reduces fabrication costs compared to Weld Neck Flanges, though it is generally not suitable for extreme pressure applications. Manufactured from Martensitic Grade 420 Stainless Steel, these flanges are heat-treatable and chosen for their superior hardness and wear resistance. Zeron Fasteners produces these flanges using reliable forging techniques to ensure a dense, uniform material structure. SS 420 Slip-On Flanges are widely used in lower-pressure process piping, cooling water systems, and plant utilities where ease of assembly and superior material strength are key requirements.

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