Slip on flange(DIN86029/DIN26030)
Blind flange(DIN2527) - Blind flange
Threaded flange(DIN2566) - Threaded flange
Welding Neck flange(DIN2631/DIN2632…DIN2638) - Welding neck flange
Welding Neck flange - Welding neck flange
Plate flange(DIN2641/DIN2642/DIN2576…) - Plate flange/ flat flange

Description

A steel flange is a forged ring of steel designed to connect sections of pipe, valves, pumps, and other equipment in a piping system. It provides easy access for inspection, cleaning, and modification, making it essential in a wide range of industrial applications.
Types of Steel Flanges

Welding Neck Flange (WN)

Long tapered hub for high-pressure applications
Butt-welded to pipe for structural integrity

Slip-On Flange (SO)

Slides over the pipe and is fillet welded
Easy to install, suitable for low-pressure systems

Blind Flange (BL)

Used to close off pipe ends or pressure vessels
Ideal for testing flow or pressure

Socket Weld Flange (SW)

Pipe inserted into the socket and fillet welded
Common in small-bore piping systems

Threaded Flange (TH)

Screwed onto pipe without welding
Used in low-pressure, non-critical systems

Lap Joint Flange (LJ)

Used with a stub end; allows easy alignment
Common in systems requiring frequent disassembly

Orifice Flange

Designed for flow measurement
Contains pressure taps on both sides

Common Materials

Carbon Steel: ASTM A105, A350 LF2 (for moderate temperatures)
Stainless Steel: SS304, SS316 (corrosion-resistant)
Alloy Steel: For high temperature or pressure environments

Standards

EN 1092-1 (Europe)
ASME B16.5 (USA)
DIN (Germany)
JIS B2220 (Japan)

Applications

Oil & Gas pipelines
Chemical and petrochemical plants
Water treatment systems
Power generation facilities
Food & pharmaceutical processing
HVAC and fire protection systems

Technical data

1. Standards & DimensionsSteel flanges are manufactured according to various international standards:StandardSize Range (DN)Pressure RatingsFace TypesEN 1092-1DN 10–DN 2000PN 2.5 to PN 100Flat Face (FF), Raised Face (RF), Tongue & GrooveASME B16.5½"–24"Class 150 to 2500RF, RTJ, FFDINDN 10–DN 1600PN 6 to PN 100RF, FF, TGJIS B222010A–1500A5K, 10K, 16K, 20KFF, RF 2. Pressure RatingsCommon pressure classes (EN & ASME equivalents):EN PN Rating (bar)ASME Class (psi)PN 10Class 150PN 16Class 300PN 25Class 400PN 40Class 600PN 63 / 100Class 900 / 1500 3. MaterialsMaterialStandardUsageCarbon SteelS235JR, S355, P245GH, P250GH, P265GH, ASTM A105, A350Oil, gas, water, steam systemsStainless SteelSS304, SS316Corrosion-resistant environmentsAlloy SteelASTM A182 F11/F22High temperature/pressure use 4. Face TypesTypeUse CaseRaised Face (RF)General purpose, most commonFlat Face (FF)Low-pressure, cast equipment connectionsRing-Type Joint (RTJ)High-pressure, leak-tight sealingTongue & Groove (TG)Precision alignment applications 5. Surface Finish (for sealing face)Finish TypeRa (μm) TypicalPurposeStock Finish3.2–12.5General-purpose RF flangesSmooth Finish≤3.2Serrated Finish3.2–6.3

Areas of application

Oil & Gas pipelines
Chemical and petrochemical plants
Water treatment systems
Power generation facilities
Food & pharmaceutical processing
HVAC and fire protection systems

DIN

PED

ISO

iso9001, iso14001, iso45001

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About us

As an internationally oriented company with headquarters in Zeuthen, near Berlin, we are characterized by competence and dynamism. Through our flexibility, comprehensive know-how, very good knowledge of the market and excellent relationships with suppliers and customers, we are always in a position to meet your desires and needs.
We have set ourselves as experts on the trade of pipe equipment and pipe flanges.
Our product range includes all standard products according to DIN, ANSI, EN and other standards in all available steels and stainless steels.
Thanks to our good and long-standing contacts with powerful international manufacturers we are able to make precise custom-made products according to drawings and customized solutions in our daily business.
Our competent staff is at your service for advice, support and to answer your questions at any time. Of course, we supply on time and reliably to any place in Europe, and also offer an excellent price/performance ratio.
Trust and fairness are our basic requirements for all business relationships, both with our customers and suppliers.
We strongly support you in order to always ensure timely and successful servicing of your orders. Only then we are really happy to have you satisfied in all of your needs or requirements!

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