/ Standard Forged Flanges

Plate Flange

Dimensions: DN10, DN15, DN20, DN25, DN50, DN100, DN200, Customized up to DN4000
Material: Carbon Steel, Stainless Steel, Alloy Steel
Thickness: According to standard or customer drawing
Standard: EN 1092-1, DIN, BS, JIS, ANSI, Custom Drawing
Class Range: PN6 to PN40, customized pressure ratings available
Flange Face Type: FF, RF, MFM, TG, RJ
End: Flat plate end
Connection: Welding / Bolted connection
Manufacturing Process: Plate cutting, drilling, machining, surface treatment

The plate flange features a flat circular structure with bolt holes and a central bore for pipe connection. It provides a simple, economical, and reliable solution for low-pressure and medium-pressure pipeline systems.

It is widely used in water supply, drainage, HVAC, fire protection, chemical pipelines, construction projects, and general industrial piping systems. Plate flanges can be manufactured according to EN 1092-1 Type 01, DIN, BS, JIS, and customized drawing requirements.
Product Description

Plate Flange- High-Performance Industrial Connection Solution

Shanxi HongKai Forging Co., Ltd. specializes in manufacturing premium Plate Flange products" target="_blank">products with integrated production capabilities spanning forging, heat treatment, machining, and comprehensive quality testing. Our enterprise-level solutions feature specifications ranging from DN15 to DN4000, pressure ratings up to Class 2500, and compliance with multiple international standards including ASME B16.5, EN1092-1, and DIN. With three department workplaces and free import-export rights, we provide prevalent channeling association arrangements for requesting mechanical applications worldwide.

What is Plate Flange

A Plate Flange is a flat circular flange with a central hole and bolt holes around the body. It is designed to connect pipes, valves, pumps, and other pipeline equipment through welding and bolting.

Compared with weld neck flanges, plate flanges have a simpler structure and lower manufacturing cost. The pipe is usually inserted through the bore of the flange and welded in place, creating a stable and practical connection for general piping systems.

Plate flanges are especially suitable for low-pressure and medium-pressure systems where easy installation, economical cost, and reliable sealing performance are required.

What is Plate Flange


Plate Flange Specifications

Standard Type Class / Pressure Rating Size Range Material Options
EN 1092-1 Type 01 Plate Flange for Welding PN2.5-PN40 DN10-DN4000 P250GH, S235JR, Stainless Steel
DIN 2576 Plate Flange PN10 / PN16 DN10-DN2000 Carbon Steel, Stainless Steel
DIN 2501 Plate Flange / Welding Flange PN6-PN40 DN10-DN2000 Carbon Steel, Alloy Steel
BS 4504 Plate Flange for Welding PN6-PN40 DN10-DN1500 Carbon Steel, Stainless Steel
JIS B2220 Steel Pipe Plate Flange 5K, 10K, 16K, 20K DN10-DN1500 SS400, SUS304, SUS316
ANSI / ASME Custom Customized Plate Flange Class 150 / Custom Customized Sizes ASTM A105, A182, A350
GOST Plate Flange Custom Pressure DN10-DN2000 Carbon Steel, Alloy Steel
Sealing Surface RF, FF, MFM, TG, RJ - - -
Coating Varnish, Black Paint, Anti-rust Oil, Galvanizing - - -

Additional Specifications:

Face Types: Raised Face (RF), Flat Face (FF), MFM, TG, Ring Type Joint (RJ)

Connection Method: Welding and bolted connection

Surface Finish: 125-250 μin Ra for sealing surfaces

Dimensional Tolerance: According to standard or customer drawing

Custom Service: Non-standard size, special drilling, special thickness available

Specifications


Plate Flange Materials & Grades

Plate flanges are available in a wide range of materials. The material should be selected according to pipeline medium, working pressure, temperature, corrosion environment, and project standard.

Carbon steel plate flanges are widely used in water supply, drainage, HVAC, construction, and general industrial systems. Stainless steel plate flanges are suitable for chemical, food, pharmaceutical, and corrosive environments. Alloy steel and duplex materials can be used for higher temperature, higher pressure, or special working conditions.

Material Grade
Carbon Steel ASTM A105, Q235, S235JR, C22.8, A350 LF2
Alloy Steel ASTM A182 F1, F5, F9, F11, F12, F22, F91
Stainless Steel ASTM A182 F304, 304L, F316, 316L, 321
Duplex Steel F51, F53, F55, S31803, S32205, S32750
Nickel Alloy Steel Inconel 600, Inconel 625, Incoloy 825, Hastelloy C276
Copper Alloy CuNi 90/10, CuNi 70/30
Titanium Grade 2, Grade 5, Grade 7

Plate Flange Dimensions

plate-flange

Plate Flange Dimension Drawing with OD ID BCD Bolt Hole and Thickness

Standard Pressure Rating Common Size Range Common Type
EN 1092-1 Type 01 PN6, PN10, PN16, PN25, PN40 DN10-DN4000 Plate Flange for Welding
DIN 2576 PN10, PN16 DN10-DN2000 Flat Plate Flange
BS 4504 PN6-PN40 DN10-DN1500 Plate Flange
JIS B2220 5K, 10K, 16K, 20K DN10-DN1500 Steel Pipe Flange
Custom Drawing Customized Customized Non-standard Plate Flange

Standardized plate flanges can be manufactured according to standard dimensions or customer drawings. Key dimensions include outside diameter, inside diameter, flange thickness, bolt circle diameter, bolt hole diameter, number of bolt holes, and sealing face type.


Advantages of Plate Flange

Cost-Effective Connection

Plate flanges have a simple structure and lower production cost, making them suitable for large-volume pipeline projects.

Easy Installation

The pipe can be inserted through the flange bore and welded in position. This installation method is simple and efficient.

Flexible Standard Options

Plate flanges can be supplied according to EN, DIN, BS, JIS, ANSI, GOST, and customer drawings.

Wide Material Selection

Carbon steel, stainless steel, alloy steel, duplex steel, nickel alloy, and other special materials are available.

Good Sealing Performance

With accurate machining and suitable sealing face treatment, plate flanges provide stable sealing for low-pressure and medium-pressure pipeline systems.

Reduced Maintenance Cost

The simple structure makes inspection, replacement, and maintenance easier during long-term pipeline operation.

Advantages of Threaded Flange


Applications

Water Supply and Drainage

Plate flanges are widely used in municipal water pipelines, drainage systems, pump stations, and water treatment projects.

HVAC Systems

They are commonly used in heating, ventilation, air conditioning, and cooling water pipeline systems.

Fire Protection Systems

Plate flanges provide economical and reliable connections for fire water pipelines and sprinkler systems.

Chemical Processing

Stainless steel and alloy plate flanges are suitable for chemical pipelines carrying corrosive or special media.

Construction Projects

Plate flanges are used in building pipeline systems, infrastructure projects, and general mechanical installations.

General Industrial Pipelines

They are suitable for equipment connection, pipe joining, and pipeline maintenance in factories and industrial plants.

Applications


Why Choose Us

Comprehensive Fabricating Capabilities

We coordinated manufacturing, warm treatment, machining, testing, and bundling beneath one roof. You get steady quality control all through the whole generation process.

International Standards Compliance

Our products meet ASME, EN, DIN, JIS, and GOST standards. You can specify the exact requirements for your regional applications with confidence.

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Extensive Estimate Run

From DN15 to DN4000, we cover essentially all mechanical necessities. Your ventures advantage from single-source obtainment convenience.

Quality Affirmation

Progressed testing offices guarantee each product meets details. You get certified items with total traceability documentation.

Global Trade Involvement

Our items serve markets over Europe and the Americas. You work with demonstrated providers who get it worldwide quality expectations.

Competitive Preferences

Prevalent quality, competitive estimating, secure bundling, and quick conveyance combine to back your extend timelines and budgets.

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Why Choose Us


FAQ

Q: What is a Plate Flange?

A: A plate flange is a flat circular flange with a center bore and bolt holes. It is used to connect pipes, valves, pumps, and other pipeline equipment.

Q: What standards are available for plate flanges?

A: Plate flanges can be supplied according to EN 1092-1, DIN, BS, JIS, ANSI, GOST, and custom drawings.

Q: What materials can be used for plate flanges?

A: Common materials include carbon steel, stainless steel, alloy steel, duplex steel, nickel alloy, copper alloy, and titanium.

Q: Is Plate Flange suitable for high-pressure applications?

A: Plate flanges are mainly used for low-pressure and medium-pressure systems. For high-pressure or severe service conditions, weld neck flanges are usually recommended.

Q: Can you produce customized plate flanges?

A: Yes. Customized size, thickness, bore, drilling pattern, sealing face, material, and surface treatment can be produced according to customer drawings.


Contact Us

Ready to enhance your piping systems with premium Plate Flange solutions? Contact us for technical specifications, customized drawings, and competitive quotations today.

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