Steel grade
Tube outside diameter
-
DN15 / 21.30 mm
(13)
-
DN20 / 26.90 mm
(13)
-
DN25 / 33.70 mm
(13)
-
DN32 / 42.40 mm
(13)
-
DN40 / 48.30 mm
(13)
-
DN50 / 60.30 mm
(13)
-
DN65 / 76.10 mm
(14)
-
DN80 / 88.90 mm
(14)
-
DN100 / 108.00 mm
(2)
-
DN100 / 114.30 mm
(14)
-
DN125 / 139.70 mm
(13)
-
DN150 / 159.00 mm
(5)
-
DN150 / 168.30 mm
(13)
-
DN200 / 219.10 mm
(8)
-
DN250 / 273.00 mm
(6)
-
DN300 / 323.90 mm
(5)
-
0,5" / 21,3 mm
(1)
-
0,75" / 26,7 mm
(1)
-
1" / 33,4 mm
(1)
-
1,25" / 42,16 mm
(1)
-
1,5" / 48,26 mm
(1)
-
2" / 60,32 mm
(1)
-
2,5" / 73,03 mm
(1)
-
3" / 88,9 mm
(1)
-
3,5" / 101,6 mm
(1)
-
4" / 114,3 mm
(1)
-
5" / 141,3 mm
(1)
-
6" / 168,28 mm
(1)
-
8" / 219,08 mm
(1)
Number of holes
Availability
Stainless steel forged blind flange DN32 42,4 mm EN1092-1/05A (PN10/16/25/40) 1.4541 / 321
- Tube outside diameter (OD): 42.4 mm
- Number of holes: 4
- Weight: 2.03 kg
- Norm: EN1092-1/05A
- Nominal pressure: PN10/16/25/40
- Steel grade: 1.4541 / 321
Availability:
available
Dispatched within: 3 days
Stainless steel forged blind flange DN32 42,4 mm EN1092-1/05B (PN10/16/25/40) 1.4401 / 1.4404 / 316 / 316L
- Tube outside diameter (OD): 42.4 mm
- Number of holes: 4
- Weight: 2.03 kg
- Norm: EN1092-1/05B
- Nominal pressure: PN10/16/25/40
- Steel grade: 1.4401 / 1.4404 / 316 / 316L
Availability:
available
Dispatched within: 3 days
Stainless steel forged flat flange DN32 42,4 mm EN1092-1/01A (PN10/16/25/40) 1.4541 / 321
- Tube outside diameter (OD): 42.4 mm
- Number of holes: 4
- Weight: 1.11 kg
- Norm: EN1092-1/01A
- Nominal pressure: PN10/16/25/40
- Steel grade: 1.4541 / 321
Availability:
available
Dispatched within: 3 days
Stainless steel forged flat flange DN32 42,4 mm EN1092-1/01B (PN10/16/25/40) 1.4301 / 1.4307 / 304 / 304L
- Tube outside diameter (OD): 42.4 mm
- Number of holes: 4
- Weight: 1.82 kg
- Norm: EN1092-1/01B
- Nominal pressure: PN10/16/25/40
- Steel grade: 1.4301 / 1.4307 / 304 / 304L
Availability:
available
Dispatched within: 3 days
Stainless steel forged flat flange DN32 42,4 mm EN1092-1/01B (PN10/16/25/40) 1.4401 / 316 / 1.4404 / 316L
- Tube outside diameter (OD): 42.4 mm
- Number of holes: 4
- Weight: 1.82 kg
- Norm: EN1092-1/01B
- Nominal pressure: PN10/16/25/40
- Steel grade: 1.4401 / 316 / 1.4404 / 316L
Availability:
available
Dispatched within: 3 days
Stainless steel forged flat flange DN32 42,4 mm EN1092-1/01B (PN10/16/25/40) 1.4541 / 321
- Tube outside diameter (OD): 42.4 mm
- Number of holes: 4
- Weight: 1.82 kg
- Norm: EN1092-1/01B
- Nominal pressure: PN10/16/25/40
- Steel grade: 1.4541 / 321
Availability:
available
Dispatched within: 3 days
Stainless steel forged flat flange DN32 42,4 mm EN1092-1/01B (PN10/16/25/40) 1.4571 / 316Ti
- Tube outside diameter (OD): 42.4 mm
- Number of holes: 4
- Weight: 1.11 kg
- Norm: EN1092-1/01B
- Nominal pressure: PN10/16/25/40
- Steel grade: 1.4571 / 316Ti
Availability:
available
Dispatched within: 3 days
Stainless steel forged loose flange DN32 42,4 mm EN1092-1/02A (PN10/16/25/40) 1.4301 / 1.4307 / 304 / 304L
- Tube outside diameter (OD): 42.4 mm
- Number of holes: 4
- Weight: 1.8 kg
- Norm: EN1092-1/02A
- Nominal pressure: PN10/16/25/40
- Steel grade: 1.4301 / 1.4307 / 304 / 304L
Availability:
available
Dispatched within: 3 days
Stainless steel forged weld neck flange DN32 42,4 mm EN1092-1/11B1 (PN10/16/25/40) 1.4301 / 1.4307 / 304 / 304L
- Tube outside diameter (OD): 42.4 mm
- Number of holes: 4
- Weight: 1.65 kg
- Norm: EN1092-1/11B1
- Nominal pressure: PN10/16/25/40
- Steel grade: 1.4301 / 1.4307 / 304 / 304L
Availability:
available
Dispatched within: 3 days
Stainless steel forged weld neck flange DN32 42,4 mm EN1092-1/11B1 (PN10/16/25/40) 1.4401 / 316 / 1.4404 / 316L
- Tube outside diameter (OD): 42.4 mm
- Number of holes: 4
- Weight: 1.65 kg
- Norm: EN1092-1/11B1
- Nominal pressure: PN10/16/25/40
- Steel grade: 1.4401 / 316 / 1.4404 / 316L
Availability:
available
Dispatched within: 3 days
Stainless steel forged weld neck flange DN32 42,4 mm EN1092-1/11B1 (PN10/16/25/40) 1.4541 / 321
- Tube outside diameter (OD): 42.4 mm
- Number of holes: 4
- Weight: 1.65 kg
- Norm: EN1092-1/11B1
- Nominal pressure: PN10/16/25/40
- Steel grade: 1.4541 / 321
Availability:
available
Dispatched within: 3 days
Stainless steel forged weld neck flange DN32 42,4 mm EN1092-1/11B1 (PN6) 1.4401 / 316 / 1.4404 / 316L
- Tube outside diameter (OD): 42.4 mm
- Number of holes: 4
- Weight: 1.1 kg
- Norm: EN1092-1/11B1
- Nominal pressure: PN6
- Steel grade: 1.4401 / 316 / 1.4404 / 316L
Availability:
available
Dispatched within: 3 days
Fittings
Fittings are the components that join, divert or terminate sections of pipe and tubing. In an industrial and plumbing context they include elbows, tees, reducers, couplings, flanges, unions and adaptors. In this category you will find a wide range of stainless steel fittings, pipe fittings and other metal fittings designed for plumbing, process and structural applications.
What stainless steel fittings are and how they are used
A fitting is the part that connects pipes or changes the direction, diameter or flow of a system. Fittings can be joined by welding, threading, compression, or by using flanges and gaskets. They are used to construct complete pipe runs, to adapt different sizes or standards, to divert flow, to isolate sections and to connect equipment such as pumps, tanks and valves. Whether you need a simple plumbing fitting for a garage project or industrial fittings for a production plant, the right fitting ensures a safe, leak‑free connection.
Common types of fittings
- Elbows – change direction (e.g. 90° or 45°).
- Tees and crosses – split or combine flow.
- Reducers – connect different pipe diameters.
- Couplings and unions – join two lengths of pipe; unions allow disassembly.
- Flanges – bolt‑together connections for equipment and access points.
- Adapters and fittings with threads – allow connection between threaded and smooth pipe.
Materials — stainless, acid‑resistant and heat‑resistant steels
All products in this category are made from stainless, acid‑resistant or heat‑resistant steels — we do not supply aluminium or plain (untreated) carbon steel. Choosing the correct alloy is essential for corrosion resistance, temperature capability and mechanical strength.
Common grades you may see listed (with typical European and US references) include:
- 304 (EN: 1.4301, AISI/UNS: 304 / S30400) – general‑purpose stainless steel with good corrosion resistance; widely used in food service and many general plumbing applications.
- 316 / 316L (EN: 1.4401 / 1.4404, AISI/UNS: 316 / S31600) – often called acid‑resistant or marine grade; better resistance to chlorides and chemicals, commonly specified for chemical processing, food, pharmaceutical and offshore use.
- 321 (EN: 1.4541, AISI: 321) – stabilised austenitic grade used where resistance to intergranular corrosion at elevated temperatures is needed.
- Ferritic grades (e.g. 430) – magnetic stainless steels with good formability for less corrosive environments and some decorative applications.
- Heat‑resistant steels (e.g. 310 family) – specified where high temperatures are expected; used in furnace, heat exchanger and some exhaust applications.
If you need clarification on a particular grade or its EN / AISI / UNS equivalence, check the product details or contact our technical team — we can help match the alloy to your application.
Industries and typical applications
Stainless and specialist steel fittings are used across a broad range of sectors. Typical areas include:
- Plumbing and building services – potable water, heating and sanitary systems.
- Food and beverage – hygienic pipework and process lines where cleanability is essential.
- Pharmaceutical and biotech – corrosion‑resistant, easy‑to‑clean fittings for controlled environments.
- Chemical and petrochemical – acid‑resistant fittings for aggressive media.
- Offshore and marine – 316/316L and other alloys chosen for chloride resistance.
- Automotive and manufacturing – exhaust systems, cooling lines and process plumbing.
- DIY and small workshops – garage plumbing, fabrication and repairs using standard pipe fittings.
How to choose the right fitting
When selecting a fitting consider these factors:
- Material compatibility – match the fitting alloy to the pipe material and the fluid or environment (corrosive chemicals, salt water, high temperature).
- Connection type – welding, threaded, socket, compression or flanged connections affect installation method and re‑usability.
- Size and tolerance – ensure the fitting matches pipe OD/ID and the applicable standard or sizing system.
- Pressure and temperature – select a grade and design rated for your system’s operating conditions; consult product data sheets where available.
- Hygiene and surface finish – polished or electropolished finishes are often required for food, beverage and pharmaceutical applications.
If you are unsure which fitting best suits your project, provide details such as pipe material, diameter, operating pressure, temperature and the fluid involved—our team can advise.
Why choose stainless steel fittings from us
Our fittings are offered only in stainless, acid‑resistant and heat‑resistant steels, giving you corrosion resistance, long service life and suitability for demanding environments. Whether you search for industrial fittings, plumbing fittings or general purpose metal fittings, we supply common connection types and grades to meet UK and international needs. Product pages include material grade and connection information so you can make an informed choice.
For technical questions or help selecting pipe fittings for a specific industry application, contact our support team or consult the individual product specifications on the site.