Din 150 Pipe Plate Flange Forged Stainless Steel 316

Din 150 Pipe Plate Flange Forged Stainless Steel 316

Core Features

  • DN150 / 6-Inch Nominal Metric Sizing: Precision-machined to interface seamlessly with standard DN150 (6″ Nominal Pipe Size) pipelines, providing exact slip-over clearance for medium-to-large bore metric conduit systems.
  • Premium Grade 316 Stainless Steel: Molybdenum-bearing alloy configuration that delivers superior resistance to chloride pitting, crevice corrosion, and heavy stress-cracking compared to standard 304 stainless steel.
  • Forged Microstructural Density: Hot-forged from premium steel billets to eliminate internal gas pockets, casting voids, and micro-cracks. This refines the grain flow, ensuring high tensile strength and burst-pressure safety under continuous structural load.
  • Hubless, Flat-Plate Geometry: Features a completely flat, collarless profile that slides directly over the end of the pipe. This architecture requires less raw material, drastically reducing weight and component cost compared to massive, hubbed alternatives.
  • Double Fillet Weld Attachment: Designed for permanent installation using both internal and external fillet welds, creating a robust, leak-proof mechanical joint that evenly distributes systemic strain along the 6-inch pipe wall.

At Kriloha Gaskets & Hardware, we recognize that modern processing facilities require components that combine exact standard alignment with relentless chemical defense. Our Forged Stainless Steel 316 DN150 Plate Flanges represent our engineered answer for “Large-Bore-Joint-Security” and “Chloride-Pitting-Defense.” As a premier supplier of high-performance fluid handling and sealing interfaces, Kriloha utilizes controlled forging and precision CNC machining to ensure that our hubless plate rings provide an absolute mechanical seal.

The engineering of our large-bore plate flange program is founded on Metallurgical-Traceability and Geometric-Perfection. By forcing the steel’s internal grain structure to trace the flat contour of the plate ring, our components offer exceptional impact toughness and resistance to stress fatigue under pressure. This robust grain structure prevents the plate from warping or flexing when high bolt torque is applied across the metric bolt circle. At Kriloha, we precision-machine the flat sealing surface—standardized to the European DIN/EN Type A (Flat Face) or Type B (Raised Face) configurations—and finish them with controlled phonographic serrations that mechanically grip the gasket matrix to resist blowout under sudden system pressure spikes.

Manufacturing and provisioning these critical flow-control connection pieces involves strict Dimensional Tolerance Checks, Volumetric Material Inspections, and Face Roughness ($R_a$) Calibration. We collaborate directly with your project engineering and facility maintenance teams to supply precise internal bores tailored to standard pipe outer diameters and specific 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 Use Cases

  • Marine & Offshore Utility Lines: Critical structural connections for seawater cooling networks, ballast piping, and offshore oil platforms exposed to aggressive marine atmospheres.
  • Chemical & Process Pipelines: High-integrity transport lines handling highly corrosive chemicals, nitric acid, organic solvents, and industrial reagents.
  • Water Treatment & Desalination: Large-scale piping systems managing high-chloride brine concentrations, wastewater processing, and aggressive water purification filtration headers.
  • Pharmaceutical & Biotech Infrastructure: High-purity utility lines where Grade 316 stainless steel prevents product contamination and survives aggressive clean-in-place (CIP) sterilization chemicals.
  • Food & Beverage Processing: Hygienic large-bore pipe connections where the non-porous, smooth surface of stainless steel stands up to regular washdowns and prevents bacterial accumulation.

Frequently Asked Questions (FAQs)

What does the “DIN 150” designation signify in piping terms?

“DIN 150” indicates a Diameter Nominal of 150mm (DN150) adhering to German/European industrial standards. It is the metric equivalent of a standard 6-inch Nominal Pipe Size (NPS), meaning the internal bore of the plate ring is precision-cut to slip over a standard 6-inch outer diameter pipe.

Why choose a hubless “Plate Flange” instead of a Weld Neck flange for a DN150 line?

At a 6-inch scale (DN150), a hubbed or tapered weld neck flange becomes significantly heavy and expensive due to the massive volume of raw material required. A flat plate flange completely lacks a raised hub, making it a highly compact, lightweight, and cost-effective alternative for standard utility pressure infrastructures where extreme structural fatigue is not present.

What specific welding configuration is required to install a stainless 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 with the flange face.

When must I choose Grade 316 stainless steel over Grade 304 for these flanges?

Grade 316 contains 2–3% added Molybdenum, which Grade 304 lacks. This specific additive makes Grade 316 highly essential for applications exposed to sea salt, brackish water, chemical acids, or high-chlorine processing environments where Grade 304 would develop severe pinhole pitting.

Are customized inner diameters or material test reports available?

At Kriloha Ltd., quality assurance is completely non-negotiable. Every shipment can be accompanied by certified Material Test Reports (MTRs) outlining full chemical composition (Carbon, Chromium, Nickel, Molybdenum content) and mechanical test values. Furthermore, our flexible CNC machining lines allow us to custom-bore the inner diameter to match your proprietary tube gauges or unique structural layout constraints without extensive tooling delays.

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