Carbon Stainless Steel Pipe Fitting Din Standard Slip On Flange Flat Welding Flange

Carbon Stainless Steel Pipe Fitting Din Standard Slip On Flange Flat Welding Flange

DIN Standard Forged Slip-On Flat Welding Flange

Category: Flanges | Sub-Category: Slip-On Flange / Flat Plate (Type 01) Family

Core Features

  • Metric DIN / EN 1092-1 Standard Compliance: Precision-machined to conform strictly to legacy German DIN standards (such as DIN 2573, 2576, or 2502) and modern harmonized European EN 1092-1 Type 01 (Flat Plate) dimensions. This ensures exact bolt-hole spacing, flange thickness, and pitch circle diameter (PCD) interchangeability across European-spec industrial arrays.
  • Low-Profile Hubless Flat Ring Profile: Unlike hubbed slip-ons, the Flat Welding Flange (Plate Flange) features a uniform, completely flat ring structure without an elevated collar neck. This low-profile geometry minimizes physical footprint, making it ideal for compact utility modules and space-restricted piping runs.
  • Double Fillet Weld Joint Security: Designed to slide seamlessly over the outside diameter of standard metric process piping. The connection is permanently secured using a robust double fillet weld setup—one tracking the exterior rear perimeter of the flange body and a secondary weld inside the bore.
  • Precision CNC Mating Face Sealing: Turned on automated vertical lathes to achieve flat alignment. Available in Flat Face (FF) or metric Raised Face (RF / Type B1) configurations, finished with standardized concentric micro-grooves ( finish) that mechanically anchor the gasket matrix to prevent fluid blowout.
  • Premium Forged Structural Integrity: Hot-forged from premium, fully certified steel stock under controlled thermal phases. This refining process eliminates internal gas pockets, casting porosities, and micro-voids, delivering an exceptionally high burst-pressure threshold compared to unpredictable cast alternatives.

At Kriloha Gaskets & Hardware, we recognize that modern process networks require components that seamlessly balance strict metallurgical compliance with structural value. Our DIN / EN 1092-1 Forged Flat Welding Slip-On Plate Flanges represent our engineered answer for “Space-Saving-Joint-Security” and “Deflection-Resistant-Flatness” across primary processing arrays. As a premier manufacturer and supplier of integrated flow control interfaces and pipeline hardware, Kriloha utilizes automated multi-axis production workflows to ensure that our forged configurations provide superior mechanical longevity compared to unpredictable cast alternatives.

The engineering of our flat welding plate program is founded on Microstructural Uniformity and Strict Geometrical Precision. By forcing certified steel billets 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 flat geometry of the ring, providing the high structural modulus required to withstand intense bolt-torque demands across the metric bolt circle without warping or undergoing structural relaxation over time. Sourcing our Carbon Steel program provides uniform hardness and exceptional mechanical toughness under cyclical line stress, while our Stainless Steel program features low-carbon thresholds to prevent intergranular corrosion cracking along the weld line. At Kriloha, we precision-machine the specified mating surfaces on advanced CNC lathes, adding controlled concentric micro-serrations ( finish) that firmly anchor your chosen gasket matrix to eliminate fluid bypass or blowout risks.

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 metric pipe outer diameters and unique wall-thickness schedules. 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

  • Low-to-Medium Pressure Plant Utilities: The industry-standard choice for main factory utility headers distributing industrial raw water, cooling tower circuits, low-pressure compressed air loop arrays, and non-corrosive gas pipelines operating under PN6, PN10, or PN16 parameters.
  • Commercial HVAC & Utility Risers: Space-saving, cost-efficient connections for commercial facility heating lines, chilled water distribution grids, and condenser loops housed in cramped service shafts.
  • Municipal Water & Wastewater Infrastructure: High-volume provisioning for large-scale filtration headers, municipal sewage pumping stations, municipal water storage tanks, and environmental drainage manifolds.
  • Modular Compact Process Skids: Low-profile connection interfaces preferred by prefabricated equipment manufacturers for routing fluid lines within compact, space-restricted structural frames.
  • Exhaust & Low-Pressure Gas Ducting: Reliable, lightweight joining interfaces for low-temperature exhaust headers, ventilation air lines, and environmental scrubbing manifolds.

Frequently Asked Questions (FAQs)

What is the structural difference between a standard Hubbed Slip-On flange and a Flat Welding Plate flange?

A standard Hubbed Slip-On flange features an elevated collar neck or hub surrounding the center bore to help distribute mechanical line stress. A Flat Welding Flange (Plate Flange) is completely flat and collarless across its entire thickness profile. This makes the plate flange significantly more compact, lightweight, and cost-effective for low-to-medium pressure utility layouts, though it has lower resistance to severe pipeline bending moments and heavy vibrations than a hubbed alternative.

What is the fundamental difference between legacy DIN standards and modern EN 1092-1 standards?

DIN standards (such as DIN 2576 for PN10 plate flanges) are historic German national engineering standards that became the baseline for global metric piping systems. EN 1092-1 is the modern harmonized European standard that replaced the individual national DIN specifications. Under EN 1092-1, a standard flat plate flange is formally classified as a Type 01 Flange. Bolt circles and physical dimensions remain highly identical between the two frameworks for field interchangeability.

What specific welding configuration is required to install a DIN Flat Welding flange?

A flat plate flange requires a standard double fillet weld configuration for a code-compliant installation:

One robust fillet weld around the exterior rear side where the pipe wall intersects the back of the flange plate.

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 weld spatter or excessive heat from damaging the machined sealing surface.

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 bolt torque is applied. Flat Face to Flat Face configurations are best engineering practice.

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

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

💡 Metallurgical Designation Note

The term “Carbon Stainless Steel” represents two completely separate raw material streams under industrial standards.

At Kriloha Gaskets & Hardware, we process this DIN standard template across both metallurgical lines depending on your fluid transport parameters: Forged Carbon Steel (such as DIN RST37.2 / EN 1092-1 P250GH) for robust, non-corrosive industrial utilities, or Austenitic Stainless Steel (such as DIN 1.4301/1.4404 or EN 1092-1 Grade 304L/316L) for severe acid handling and clean-room application. Below are the unified features of this universal flat welding design.

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