Metalsworldtop/Heidi provides refineries, petrochemical plants, power plants, and other related industries with a vast supply of piping components.
We are proud to be able to supply Specialty Grades of Stainless Steel Pipe, Heater Tubes & Fittings, Steel Pipe Fitting, Stainless Flanges, Steel Sheet, Stainless Bar, ect.to industrial suppliers at Metalsworldtop.
Stainless steel pipes, fittings, and flanges are essential components in various industries and applications where corrosion resistance and durability are crucial. Here’s some information about each of these components:
Stainless Steel Pipes: Stainless steel pipes are widely used for conveying fluids, gases, and other materials. They are known for their excellent corrosion resistance, high strength, and ability to withstand high temperatures. Stainless steel pipes come in various sizes, schedules, and grades to suit different applications, such as plumbing, oil and gas, chemical processing, food processing, and pharmaceutical industries.
Stainless Steel Fittings: Stainless steel fittings are used to connect and join sections of stainless steel pipes. These fittings are available in different types, including elbows, tees, couplings, unions, reducers, and valves. Stainless steel fittings are designed to provide a leak-free and secure connection between pipes, ensuring efficient fluid flow and system integrity.
Stainless Steel Flanges: Flanges are used to connect pipes, valves, pumps, and other equipment in piping systems. Stainless steel flanges are highly durable and resistant to corrosion, making them suitable for demanding applications. They provide a solid connection, allowing for easy assembly and disassembly of pipes. Stainless steel flanges come in various types, such as slip-on, weld neck, socket weld, threaded, and blind flanges.
Benefits of Stainless Steel:
Corrosion resistance: Stainless steel has excellent corrosion resistance properties, making it suitable for use in various environments, including those with high humidity, chemicals, and saltwater.
Strength and durability: Stainless steel is known for its high strength and durability, allowing it to withstand high pressures and temperatures.
Hygiene and cleanliness: Stainless steel is non-porous, easy to clean, and resistant to bacteria and germs, making it ideal for applications in the food and pharmaceutical industries.
Aesthetic appeal: Stainless steel has a sleek and modern appearance, making it a popular choice in architectural and decorative applications.
When choosing stainless steel pipes, fittings, and flanges, it’s important to consider factors such as the intended application, operating conditions (e.g., pressure and temperature), compatibility with the conveyed fluid or gas, and compliance with relevant industry standards (e.g., ASTM, ASME). Consulting with a knowledgeable supplier or engineer can help ensure the appropriate selection of these components for your specific needs.
European standard EN 1092-1 – concerning flanges for pipes – establishes the requirements for steel flanges based on their nominal pressure (PN) and dimension (DN).
Moreover, it defines the different kinds of flanges and their sealing surfaces, tolerances, threading and labelling.
What are the differences among the different kinds of flanges?
In this article the different kinds of EN 1092-1 flanges available in our stock will be presented and their peculiar features will be described.
Each classification is labelled with the lettering EN 1092-1 (i. e. the reference standard) followed by a two-digit number indicating the construction of the flange, and a letter which indicates the kind of sealing surface of the flange.
The labelling on the side of all kinds of flanges includes not only the lettering EN 1092-1 TYPE___, but also information concerning PN, DN and casting of the raw material used for the creation of the flange.
The first and most widespread kind is the EN 1092-1 TYPE 01A flat welding flange. As it was previously explained, the labelling of the flange provides a lot of information: EN 1092-1 indicates the reference standard, TYPE 01 reveals that it is a welding flange and A stands for flat sealing surface. This kind of flanges are used for connecting pipes and they are welded by means of overlap weld. Then, they are joint by means of bolts.
Also the second kind of flanges is a flat welding kind (TYPE 01), but their sealing surfaces are different from the previous one, as they have raised faces (B). EN 1092-1 TYPE 01B raised face flanges host a low relief collar surrounding the central hole of the flange, which proves to be useful for checking the position of the gasket. They are welded by means of overlap weld and they are joint by means of bolts.
The third kind of flanges available in our catalogue is the EN 1092-1 TYPE 02A lap joint flange. Their labelling can be easily broken down into EN 1092-1 (reference standard) TYPE 02 (lap joint flange) A (flat sealing surface). They are loose flanges to be joint by means of welding collars; bolts are used for their connection.
The fourth kind of EN 1092-1 flanges in our stock are flat (A) blind flanges (TYPE 05). EN 1092-1 TYPE 05A blind flanges are used combined with flat welding flanges, raised face flanges or collar as end caps for tubes.
The fifth kind concerns welding neck flanges (TYPE 11) with raised faces (B). The kind of welding used is butt welding.
The sixth kind of EN 1092-1 flanges you can find in our stock identifies threaded flanges (TYPE13) with raised faces (B). They have a female thread for coupling with threaded male ends.
The last kind, EN 1092-1 TYPE 33, establishes the dimensions of welding collars to be used in combination with EN 1092-1 TYPE02A loose flanges or DIN 2642 flanges from pressed stainless steel.
Moreover, Fitting Service can supply, on customer’s request, further EN1092-1 types. See on the table below our full range of EN 1092-1 flanges.
| EN 1092-1: figure 1 (flange types) | ||
|---|---|---|
| Drawn (source: EN 1092-1) | TYPE __ | Full description |
 | EN 1092-1 TYPE 01 | Plate flange for welding |
 | EN 1092-1 TYPE 02 | Loose plate flange with weld-on plate collar TYPE 32 |
| EN 1092-1 TYPE 02 | Loose plate flange with weld-on plate collar TYPE 33 |
 | EN 1092-1 TYPE 04 | Loose plate flange with weld-neck collar TYPE 34 |
 | EN 1092-1 TYPE 05 | Blind flange or blank flange |
 | EN 1092-1 TYPE 11 | Weld-neck flange |
 | EN 1092-1 TYPE 12 | Hubbed slip-on flange for welding |
 | EN 1092-1 TYPE 13 | Hubbed threaded flange |
 | EN 1092-1 TYPE 21 | LWN – long welding-neck or integral flange |
| EN 1092-1: figure 2 (ancillary components) | ||
|---|---|---|
| Drawn (source: EN 1092-1) | TYPE __ | Full description |
 | EN 1092-1 TYPE 32 | Weld-on collar plate |
 | EN 1092-1 TYPE 33 | Short collar or lapped pipe end |
 | EN 1092-1 TYPE 34 | Weld-neck collar |
