Dn50 A105 Carbon Steel Slip On Flange

Dn50 A105 Carbon Steel Slip On Flange

DN50 / 2-Inch Forged Carbon Steel Slip-On Flange

Category: Flanges | Sub-Category: Slip-On Flange / Hubbed Plate Family

Core Features

  • DN50 / 2-Inch Nominal Sizing Alignment: Precision-machined with a center clearance internal bore engineered to slide seamlessly over standard metric DN50 / 2-inch nominal outer diameter (60.3 mm) process piping networks, distribution headers, or pump lines.
  • Premium Forged Carbon Steel Core (ASTM A105): Hot-forged from premium, fully killed carbon steel stock under strict thermal phases. Sourcing a forged core refines the internal metal grain orientation and completely eliminates the risk of hidden casting porosities, gas pockets, or micro-cracks under intense system tension.
  • Low-Profile Slip-On (SO) Hub Profile: Features an integrated, low-profile raised hub or collar surrounding the center bore. This architecture distributes mechanical line strains, pipe-weight loads, and thermal expansion loops far more effectively than a standard hubless flat plate ring, making it highly resilient under system vibrations.
  • Double Fillet Weld Joint Security: Attached to the pipeline by sliding directly over the outer diameter of the DN50 pipe. The joint is permanently secured via a robust double fillet weld matrix—one external weld tracking the perimeter of the raised hub neck and a secondary weld inside the bore.
  • Precision CNC Mating Face Sealing: Turned on automated multi-axis CNC lathes to achieve flat, parallel joint alignment. Typically available in Raised Face (RF) or Flat Face (FF) configurations, finished with standardized micro-grooved phonographic or concentric serrations ( finish) to ensure maximum gasket mechanical friction and prevent fluid blowout.

At Kriloha Gaskets & Hardware, we recognize that modern fluid processing networks require components that seamlessly balance robust mechanical security with standardized line flexibility. Our DN50 Forged Carbon Steel ASTM A105 Slip-On (SO) Flanges represent our engineered answer for “High-Load-Joint-Security” and “Zero-Flexing-Integrity” across essential processing arrays. As a leading premier manufacturer and supplier of integrated flow control elements and pipeline 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 DN50 carbon steel slip-on program is founded on Microstructural Uniformity and Deflection-Resistant Flatness. By forcing certified steel stock through controlled hot-forging paths rather than relying on lower-cost casting alternatives, we completely eliminate internal gas pockets, casting porosities, and structural micro-cracks. The refined metal grain structure smoothly traces the contour of the flange ring and low-profile hub, providing the component with an exceptional structural modulus. This allows it to withstand high bolt-torque demands across the standardized bolt circle without warping or undergoing structural relaxation over time. Finished with an anti-rust black lacquer, rust-preventative oil, or heavy hot-dip galvanization, our carbon steel program handles heavy pipeline strains seamlessly. At Kriloha, we precision-machine the specified mating surfaces on advanced CNC turning centers, finishing them with controlled phonographic serrations ( finish) that firmly anchor the gasket matrix to eliminate fluid bypass or blowout risks during sudden system pressure cycles.

Manufacturing and provisioning these critical flow-control connection pieces involves strict Dimensional Tolerance Checks, Volumetric Material Inspections, and Face 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

  • Standard Plant Process Utilities: The industry-standard choice for primary factory utility headers distributing industrial raw water, cooling tower loops, factory compressed air networks, and inert gas loops operating under standard pressure parameters.
  • Midstream Hydrocarbon & Petroleum Lines: Heavy-duty, economical connection joints for non-corrosive crude oil transport, gathering manifolds, storage terminal trunk lines, and fuel oil distribution networks where fluid corrosion risks are minimal.
  • Steam & Condensate Networks: Reliable connection joints for secondary steam utility pipelines, boiler feed lines, and thermal fluid transport lines exposed to moderate thermal cycles.
  • Municipal Water & Sewage Infrastructure: High-volume provisioning for mid-diameter water treatment headers, municipal pump station manifolds, water storage tanks, and environmental drainage lines.
  • Modular Industrial Process Skids: Compact structural mounting flanges used by equipment manufacturers to link prefabricated piping manifolds directly to valves, strainers, inline instruments, 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.

What are the dimensional equivalents of a DN50 flange under American standards?

A metric DN50 flange corresponds exactly to a 2-Inch Nominal Pipe Size (NPS 2) flange. If manufactured under the standard ASME B16.5 Class 150 layout, it features an outer diameter of 6.00 inches (152.4 mm), a pitch circle diameter (PCD) of 4.75 inches (120.6 mm), and utilizes 4 bolt holes designed for 5/8-inch diameter bolts or stud bolts.

What specific welding configuration is required to install an ASTM A105 Slip-On flange?

A slip-on flange requires a standard double fillet weld setup 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 heat or weld spatter from damaging the machined sealing surface during field welding.

Can a carbon steel 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 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 creates a bending moment that can crack or fracture the expensive cast iron valve body when torque is applied. Like-to-like face configurations are best engineering practice.

Are Material Test Reports (MTRs) provided by Kriloha for these 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 fractions), hardness values, yield/tensile strength data, heat treatment records, and explicit compliance with international industrial standards to guarantee complete code traceability.

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