UNI Plate Flanges PN6 to PN40 Manufacturer

UNI Plate FlangesPN6 to PN40

Manufacturer and Supplier of UNI Plate Flanges PN6 to PN40 in Various Material Grades.
UNI PN6 Plate Flanges Manufacturer in Mumbai, India. Carbon Steel UNI PN40 Plate Flanges Supplier, Stainless Steel UNI PN6 Plate Flanges Exporter, Alloy Steel UNI PN25 Plate Flanges Stockist, Copper Nickel UNI PN10 Plate Flanges Distributor, Inconel UNI PN16 Plate Flanges, Monel UNI PN40 Plate Flanges, Hastelloy UNI PN6 Plate Flanges, Duplex Steel UNI PN6 to PN40 Plate Flanges Manufacturer & Exporter in Mumbai, India.
We supply a wide range of precision-engineered UNI Plate Flanges PN6 to PN40 for waterworks, chemical, oil & gas, HVAC, and general industrial applications in compliance with international quality standards.
UNI PN6 to PN40 Plate Flanges Manufacturer in Australia, Middle East, Europe, and Asia.

Werner Flanges Inc. is a trusted manufacturer and exporter of high-quality UNI Plate Flanges ranging from PN6 to PN40, designed to meet the dimensional and pressure class requirements of the UNI (Ente Nazionale Italiano di Unificazione) standard. These flanges are widely used in industries such as water treatment, chemical processing, oil & gas, HVAC systems, and marine applications. Available in pressure classes PN6, PN10, PN16, PN25, and PN40, our UNI plate flanges are manufactured in a wide range of materials including carbon steel, stainless steel, alloy steel, duplex steel, Inconel, Monel, Hastelloy, and copper nickel — ensuring excellent performance in both low and high-pressure environments.

With precision machining, strict quality control, and international certifications, Werner Flanges Inc. delivers UNI flanges that offer durability, dimensional accuracy, and corrosion resistance. Whether you’re sourcing for infrastructure projects, industrial plants, or global exports, we have the capability to supply standard and custom sizes to suit your project needs. For technical assistance, pricing, or custom orders, contact our sales team today at sales@wernerflanges.com — we’re here to provide expert support and reliable flange solutions worldwide.

Werner Flanges Inc. is one of the leading manufacturers and suppliers of UNI PN6 Plate Flanges in a variety of premium material grades such as Duplex Steel, Carbon Steel, Stainless Steel 316, Inconel 601, Hastelloy C276, Monel K500, Copper Nickel, and Titanium. We offer Industrial UNI PN6 Plate Flanges, High Pressure UNI PN6 Plate Flanges, Slip-On Plate Flanges, Flat Face and Raised Face Plate Flanges, and customized solutions as per client specifications. Our UNI PN6 flanges are widely used in water treatment plants, fire protection piping, and low-pressure pipeline systems across industrial sectors.

We also supply a complete range of UNI PN10, PN16, PN25, and PN40 Plate Flanges, designed for applications requiring higher pressure resistance. This includes Carbon Steel UNI PN40 Plate Flanges, Duplex Steel UNI PN25 Plate Flanges, Stainless Steel 316 UNI PN16 Plate Flanges, Hastelloy UNI PN40 Plate Flanges, and Titanium UNI PN10 Plate Flanges, among others. These flanges are precision-engineered to deliver reliable performance in HVAC systems, chemical processing, marine engineering, and oil & gas installations. All UNI Plate Flanges from PN6 to PN40 are manufactured to meet international quality standards, ensuring leak-proof connections and long service life.

UNI Plate Flanges PN6 to PN40 Technical Specifications

Specification	Details
Standard	UNI (Ente Nazionale Italiano di Unificazione)
Flange Types	Plate Flanges, Slip-On (SO), Blind (BL), Weld Neck (WN), Socket Weld (SW), Threaded (TH)
Pressure Ratings	PN6, PN10, PN16, PN25, PN40
Size Range	DN 15 to DN 1200 (custom sizes available upon request)
Facing Types	Raised Face (RF), Flat Face (FF)
Material Grades	Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel, Copper Nickel, Inconel, Monel, Hastelloy
Manufacturing Process	Forged or Machined as per UNI dimensional standards
Testing & Certification	EN 10204 3.1 / 3.2, Hydrostatic Test, Ultrasonic Test, PMI Test, Third-Party Inspection

Material Specifications for UNI Plate Flanges PN6 to PN40

Type of Materials	Common Specifications / Customization Available on Request * Materials conform to ASTM/ASME standards and are compatible with UNI Plate Flanges PN6 to PN40
Duplex Steel	ASTM/ASME A182 F51, F60, F61, UNS S31803, UNS S32205
Super Duplex Steel	ASTM/ASME A182 F53, F55, UNS S32750, UNS S32760, F44 (6Mo)
Stainless Steel	ASTM/ASME A182 F304, F304L, F316, F316L, F310, F317L, F321, F347
Carbon Steel	ASTM A105, A350 LF1, LF2, LF3, A266 Class 1/2, A694 F42 to F70, A765 Gr. II
Alloy Steel	ASTM/ASME A182 F1, F5, F9, F11, F12, F22
Non-Ferrous Alloys	Titanium, Brass, Admiralty Brass, Copper Nickel, Nickel Alloys, Hastelloy
Titanium	ASTM/ASME B381 Gr.1, Gr.2, Gr.5, Gr.7, Gr.12, Gr.16
Copper Nickel	ASTM B151 UNS C70600 (Cu-Ni 90/10), C71500 (Cu-Ni 70/30)
Brass, Al-Brass	ASTM B152 UNS C26000, C27200, C28000; ASTM B111 for Al-Brass
Nickel Alloys	ASTM B160, B161, B564 – UNS N02200, N02201, N04400, N08800, N08825, N06600, N06601, N06625, Monel K500
Alloy 20	ASTM B462 UNS N08020
Hastelloy	ASTM B564 UNS N10276 (Hastelloy C276), N06022 (Hastelloy C22)
Cladded Materials	ASTM B898, B265, B424 or custom explosion/clad bonding using dissimilar metals
Cladded Materials	Titanium-Steel, Nickel-Steel, Titanium-Copper, Stainless Steel-Carbon Steel, Bimetallic/Trimetallic Combinations

Types of UNI Plate Flanges PN6 to PN40

UNI PN6 Plate Flanges
UNI PN10 Plate Flanges
UNI PN16 Plate Flanges
UNI PN25 Plate Flanges
UNI PN40 Plate Flanges
UNI PN6 Slip-On Plate Flanges (SO)
UNI PN16 Blind Plate Flanges (BL)
UNI PN40 Weld Neck Plate Flanges (WN)
UNI PN10 Socket Weld Plate Flanges (SW)
UNI PN25 Threaded Plate Flanges (TH)
UNI PN6 Lap Joint Plate Flanges (LJ)
UNI PN40 Raised Face Plate Flanges (RF)
UNI PN16 Flat Face Plate Flanges (FF)
UNI PN25 Long Weld Neck Plate Flanges (LWN)

Industries and Applications of UNI Plate Flanges PN6 to PN40:

Industry	Application
Water Supply & Treatment	Used in pipelines, pumps, and purification systems for municipal and industrial water distribution networks.
Oil & Gas	Employed in low to moderate pressure applications such as utility lines, drainage systems, and terminal piping.
Fire Protection Systems	Installed in hydrant lines, sprinkler networks, and firefighting pipelines for secure and leak-proof connections.
HVAC & Building Services	Used in chilled water lines, heating systems, and air distribution piping across residential and commercial buildings.
Marine & Offshore Engineering	Applied in seawater intake and discharge lines, ballast systems, and general marine piping solutions.
Chemical & Process Industries	Ideal for conveying non-corrosive and mildly corrosive fluids under controlled pressure in process plants.
Power Plants	Utilized in auxiliary systems, water circulation loops, and service pipelines in thermal and hydroelectric stations.
Mining & Mineral Processing	Supports slurry pipelines, dewatering setups, and fluid transport in material handling and ore refining operations.

Frequently Asked Questions (FAQs) about UNI Plate Flanges PN6 to PN40

1. What are UNI Plate Flanges?: UNI Plate Flanges are flat, circular flanges manufactured according to UNI (Italian National Standards), commonly used in piping systems for secure, low- to high-pressure connections.
2. What pressure classes are available for UNI Plate Flanges?: UNI Plate Flanges are available in pressure ratings PN6, PN10, PN16, PN25, and PN40, covering a wide range of industrial pressure applications.
3. What materials are used to manufacture UNI Plate Flanges?: They are typically made from carbon steel, stainless steel, alloy steel, duplex steel, copper nickel, Monel, Inconel, and Hastelloy, depending on the application and media handled.
4. What industries use UNI Plate Flanges?: They are widely used in water treatment, oil & gas, marine, HVAC, fire protection, mining, and general industrial piping systems.
5. Are UNI Plate Flanges suitable for high-pressure applications?: Yes, PN25 and PN40 rated UNI Plate Flanges are suitable for moderate to high-pressure systems, offering strong sealing and durability.
6. What is the difference between UNI and EN/DIN flanges?: UNI flanges follow Italian standards, while EN/DIN flanges follow European norms. They may differ in dimensions, drilling patterns, and pressure ratings. Compatibility should be verified before use.
7. Where can I buy certified UNI Plate Flanges PN6 to PN40?: You can purchase certified UNI flanges from trusted manufacturers like Werner Flanges Inc. For quotes or technical details, contact sales@wernerflanges.com.