High Quality Dn50 A105 Carbon Steel Raised Face Plate Flange

At Kriloha Gaskets & Hardware, we recognize that an industrial pipeline is only as reliable as its bolted connections. Our High-Quality DN50 ASTM A105 RF Carbon Steel Plate Flanges represent our engineered answer for “High-Concentration-Sealing-Security” and “Zero-Flexing-Integrity” across essential fluid handling networks. As a premier manufacturer and supplier of high-performance flow control and pipeline elements, Kriloha utilizes automated multi-axis production workflows to deliver drop-in, hubless plate rings that align perfectly with your pipeline blueprints.

The engineering of our A105 forged plate flange program is founded on Microstructural Uniformity and Geometric-Perfection. By prioritizing high-density hot-forging over lower-tier casting alternatives, the metal grain structure smoothly traces the flat geometry of the plate ring. This provides the structural modulus required to withstand intense bolt-torque demands across the bolt circle without bowing, warping, or undergoing structural relaxation over time. At Kriloha, we precision-machine the Raised Face (RF) sealing surface on advanced CNC turning centers, finishing it with controlled phonographic serrations ($R_a$ finish) that mechanically bite into the gasket matrix to resist blowout under sudden system pressure spikes.

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, compressed air networks, and inert gas lines.
Steam & Condensate Networks: Reliable connection joints for secondary steam utility pipelines, boiler feed lines, and thermal fluid transport lines exposed to elevated thermal cycles.
Oil, Gas & Petroleum Pipelines: Heavy-duty, economical connection joints for non-corrosive hydrocarbon transport, fuel oil distribution networks, oil blending systems, and lubrication oil lines.
Water Treatment & Pumping Infrastructure: Standard piping interfaces for high-head municipal water filtration networks, heavy drainage manifolds, sewage pumping stations, and irrigation headers.
Modular Industrial Process Skids: Compact structural flanges used to join prefabricated piping manifolds directly to raised-face valves, strainers, filtration pods, and storage vessels.

Frequently Asked Questions (FAQs)

What is the explicit purpose of the “Raised Face” (RF) on a hubless plate flange?

The raised face concentrates the compressive load from tightening the bolts into a smaller, centralized zone on the flange. By focusing the clamping force directly onto the gasket surface, it ensures a much tighter and more secure fluid seal than a standard Flat Face flange under equivalent torque values.

What makes a “Forged” A105 plate flange superior to a “Cast” alternative?

Forging involves hammering or pressing hot steel into shape, which crushes any micro-voids and forces the internal grain flow to follow the shape of the flange. Sourcing forged A105 flanges ensures vastly superior tensile strength, impact resistance, and pressure-handling capabilities compared to casting alternatives, which can suffer from hidden casting porosities.

What specific welding configuration is required to install a DN50 plate flange?

A plate welding flange requires a standard double fillet weld setup for proper installation: one robust fillet weld around the rear side where the plate meets the outer diameter of the pipe wall, and a secondary fillet weld along the inside bore face where the pipe end sits flush behind the raised sealing face.

Can an A105 Raised Face (RF) flange be safely bolted to a Flat Face (FF) Cast Iron valve?

It is highly recommended not to mate a Raised Face carbon steel flange directly to a Flat Face cast iron component. Because cast iron is brittle, the concentrated clamping force generated by the raised face inside the bolt circle can create a bending moment that cracks or fractures the expensive cast iron valve equipment. Like-to-like face configurations are best practice.

Are Material Test Reports (MTRs) provided with these forged DN50 flanges?

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 (such as ASME/ANSI B16.5 or EN 1092-1 dimensional templates) to guarantee complete code traceability.