Stainless Steel Flange Plate 304 316L Pipe Fittings

Stainless Steel Flange Plate 304 316L Pipe Fittings

Core Features

  • Dual-Option Premium Metallurgy (304 / 316L): Available in high-purity Grade 304 for standard moisture resistance and food-grade utility lines, or low-carbon Grade 316L featuring 2–3% added Molybdenum for premium protection against chloride pitting, stress-corrosion cracking, and industrial chemical acids.
  • Space-Saving Hubless Geometry: Features a completely flat, collarless circular profile (Type 01 / Plate Ring) designed to slide directly over the outer diameter of the pipe. This architecture minimizes raw material volume, slashes structural weight, and optimizes tight spatial layouts.
  • Double Fillet Weld Securement: Engineered to slide over the pipe end and secure permanently via both internal and external fillet welds. This dual-welded matrix creates a robust, leak-proof mechanical joint that evenly distributes structural strain and effectively absorbs pipeline vibrations.
  • Precision CNC Flat Face Sealing: Turned on automated multi-axis CNC lathes to achieve parallel joint alignment. Finished with standardized micro-grooved phonographic or concentric serrations ($R_a$ finish) to ensure maximum gasket mechanical friction and prevent fluid blowout.
  • Universal Drop-In Dimensional Alignment: Precision-machined to adhere strictly to major international standardized frameworks—including American ASME/ANSI B16.5 (Class 150), European EN 1092-1 (Type 01), and German DIN 2576 templates—ensuring exact bolt-hole and alignment compatibility across global piping systems.

At Kriloha Gaskets & Hardware, we recognize that an industrial pipeline is only as reliable as its bolted interfaces. Our Premium Grade 304 and 316L Stainless Steel Flange Plates represent our engineered answer for “Zero-Leak-Security” and “Uncompromised-Joint-Alignment.” As a leading manufacturer and supplier of high-performance fluid handling and mechanical hardware interfaces, Kriloha utilizes controlled manufacturing and precision multi-axis CNC machining to ensure that our hubless plate rings provide maximum physical resilience alongside your chosen gasket matrix.

The engineering of our stainless plate flange program is founded on Metallurgical-Purity and Sharp-Geometric-Tolerance. By forcing certified stainless steel stock through controlled forging paths rather than relying on lower-cost casting alternatives, we eliminate internal gas pockets, voids, and structural micro-cracks. The refined metal grain structure smoothly traces the flat geometry of the plate ring, providing the structural modulus required to withstand high bolt-torque demands across the bolt circle without warping or bowing over time. At Kriloha, we meticulously finish the flat mating face with standardized concentric micro-serrations, creating an aggressive mechanical grip that anchors the gasket sheet firmly in place to resist blowout under sudden system pressure surges.

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, procurement, and facility maintenance teams to supply precise internal bores tailored to standard pipe outer diameters or specific wall-thickness schedules (such as Schedule 10S or 40S matching). By choosing Kriloha Gaskets & Hardware, you are investing in a “Future-Proof” industrial partnership that prioritizes your system’s lifetime reliability through superior stainless metallurgy and micro-tolerance engineering.

Primary Use Cases

  • Hygienic Process Pipelines: Clean utility networks in food processing, beverage bottling lines, dairy plants, and cosmetics manufacturing where smooth, non-porous stainless steel prevents fluid contamination and survives clean-in-place (CIP) steam washdowns.
  • Chemical Handling & Dosing Skids: High-integrity flanged interfaces for chemical processing loops transporting mild acids, industrial reagents, volatile solvents, and wastewater treatment chemicals.
  • Marine & Offshore Utilities: Secure connection joints for seawater cooling networks, desalination skids, reverse osmosis water purification modules, and offshore ballast systems.
  • Commercial HVAC & High-Purity Lines: Premium, lifetime rust-resistant connections for routing thin-wall chilled water lines, commercial condenser loops, and industrial air-handling drainage tubes.
  • Modular OEM Machinery Skids: Compact structural connection rings used to integrate prefabricated manifold piping directly to flat-faced valves, strainers, miniature pumps, and instrument manifolds.

Frequently Asked Questions (FAQs)

What is the fundamental definition of a “Plate Flange” compared to other flange types?

A plate flange (often designated as an EN 1092-1 Type 01 or a slip-on plate ring) is a completely flat circular disk with no extended collar, raised hub, or tapered welding neck. It functions by sliding directly over the outer diameter of the pipe and is secured to the pipeline using a double fillet weld configuration, making it the most compact and economical flange design available.

Why specify a hubless Flat Plate Flange instead of a traditional hubbed Slip-On flange?

Because a plate flange completely lacks a raised collar or hub, it uses significantly less raw material during manufacturing. This makes it a highly compact, lightweight, and cost-effective alternative for standard process networks and utility lines where the extra structural reinforcement of a heavy hub is not functionally required by the system design parameters.

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 flat face. For thin-walled stainless steel tubes, high-strength TIG welding is recommended to prevent burn-through.

When should I select Grade 316L stainless steel over Grade 304 for this product?

Grade 304 is highly economical and excellent for freshwater, food-grade utilities, and standard atmospheric applications. Grade 316L contains 2–3% added molybdenum and ultra-low carbon content, making it mandatory for harsher environments exposed to sea salt, brackish water, or chemical acids where pinhole pitting and weld-zone intergranular corrosion must be strictly avoided.

Are Material Test Reports (MTRs) provided with these steel flange plates?

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 (including precise Carbon, Chromium, Nickel, and Molybdenum content), hardness values, yield/tensile strength data, and explicit compliance with international dimensional standards to guarantee complete industrial traceability.

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