Dn65 Pn10 Carbon Steel Forged Slip On Asme B16 47 Flanges

At Kriloha Gaskets & Hardware, we recognize that modern mid-bore process networks require components that seamlessly balance robust mechanical security with standardized line flexibility. Our DN65 (2.5-Inch) PN10 / ASME Forged Carbon Steel Slip-On (SO) Flanges represent our engineered answer for “High-Load-Joint-Security” and “Zero-Flexing-Integrity” across essential fluid processing arrays. As a leading premier supplier of integrated flow control elements and high-performance hardware, Kriloha utilizes automated multi-axis production workflows to ensure that our forged slip-on configurations provide superior mechanical longevity compared to unpredictable cast alternatives.

The engineering of our DN65 slip-on program is founded on Microstructural Uniformity and Deflection-Resistant Flatness. By prioritizing high-density hot-forging over lower-tier casting alternatives, the metal grain structure smoothly traces the contour of the flange ring and low-profile hub. This provides the structural modulus required to withstand intense bolt-torque demands across the 4-bolt or 8-bolt ANSI circle (depending on Class rating) without bowing, warping, or undergoing structural relaxation over time. At Kriloha, we precision-machine the flat sealing surface on advanced CNC turning centers, finishing them with controlled phonographic serrations ($R_a$ finish) that mechanically grip the gasket matrix to resist blowout under sudden system pressure cycles.

Manufacturing and provisioning these critical high-grade components involves strict Dimensional Tolerance Checks, Volumetric Material Inspections, and Surface Roughness Calibration. We collaborate directly with your project engineering, procurement, and facility maintenance teams to supply precise internal bores tailored to standard pipe outer diameters and unique wall-thickness schedules (such as Schedule 40 or Schedule 80 matching). By choosing Kriloha Gaskets & Hardware, you are investing in a “Future-Proof” industrial partnership that prioritizes your system’s lifetime reliability through superior metallurgy and micro-tolerance engineering.

Primary Industrial Applications

Moderate-Pressure Plant Utilities: Ideal for primary factory utility lines distributing high-pressure industrial water, cooling tower loops, factory compressed air networks, and inert gas loops operating under PN10 parameters.
Petrochemical & Refinery Piping Loops: High-reliability joint connections for downstream processing lines handling non-corrosive hydrocarbons, heavy fuel oils, lubricants, and oil-water slops.
Steam & Condensate Networks: Reliable connection joints for secondary steam utility pipelines, boiler feed lines, and thermal fluid transport lines exposed to elevated thermal cycles.
Municipal Water & Wastewater Distribution: Standard space-saving connection joints for large-scale water treatment headers, municipal pump manifolds, and wastewater filtration networks.
Modular Industrial Process Skids: Compact structural flanges used to join prefabricated piping manifolds directly to flat-faced or raised-face valves, strainers, filtration pods, and storage vessels.

Frequently Asked Questions (FAQs)

What is the structural difference between a Slip-On (SO) flange and a standard Flat Plate flange?

While both types slide over the pipe outer diameter and utilize double fillet welding, a standard plate flange is completely flat and collarless. A Slip-On flange features a low-profile raised hub or collar surrounding the center bore. This hub provides additional structural reinforcement at the weld zone, helping to distribute pipeline stresses and making it better suited for slightly higher mechanical loads or vibration profiles compared to a completely flat, hubless plate flange.

Why does the product title include both metric PN10 and American ASME standards?

While ANSI/ASME (American) and EN/DIN (European metric) are separate standards, certain mid-bore dimensions share matching or nearly identical bolt counts and spacing footprints. A dual-standard design allows a single forged flange to be cross-compatible with multiple systems, facilitating seamless connections between American-spec process skids and European-spec factory utility layouts without pressure boundary issues.

What specific welding configuration is required to install an ASME Slip-On flange?

A slip-on flange requires a double fillet weld configuration for proper code-compliant installation:

One robust fillet weld around the exterior where the hub neck meets the outer diameter of the pipe wall.

A secondary fillet weld inside the bore, where the pipe end is slid back slightly (typically equal to the pipe wall thickness plus 3mm) from the flange face to prevent damaging the sealing surface during field welding.

How is this carbon steel flange protected against environmental rust during transit and storage?

Because carbon steel is vulnerable to atmospheric oxidation, our high-quality carbon steel flanges come standard with a protective surface treatment. This typically includes a light yellow or black anti-rust lacquer, a rust-preventative oil finish, or heavy-duty hot-dip galvanization depending on your long-term storage and field installation environment requirements.

Are Material Test Reports (MTRs) provided with these forged DN65 flanges from Kriloha?

At Kriloha Ltd., quality assurance is completely non-negotiable. Every shipment from our facility can be accompanied by comprehensive Material Test Reports (MTRs) confirming exact chemical compositions (Carbon, Manganese, Silicon content), hardness values, yield/tensile strength data, and explicit compliance with international industrial standards to guarantee complete code traceability.