Tube outside diameter
Steel grade
Availability
Stainless steel forged weld neck flange DN100 114,3 mm EN1092-1/11B1 (PN10/16) 1.4571 / 316Ti
- Tube outside diameter (OD): 114.3 mm
- Number of holes: 8
- Weight: 4.54 kg
- Norm: EN1092-1/11B1
- Nominal pressure: PN10/16
- Steel grade: 1.4571 / 316Ti
Availability:
available
Dispatched within: 3 days
Stainless steel forged weld neck flange DN125 139,7 mm EN1092-1/11B1 (PN10/16) 1.4571 / 316Ti
- Tube outside diameter (OD): 139.7 mm
- Number of holes: 8
- Weight: 5.7 kg
- Norm: EN1092-1/11B1
- Nominal pressure: PN10/16
- Steel grade: 1.4571 / 316Ti
Availability:
available
Dispatched within: 3 days
Stainless steel forged weld neck flange DN15 21,3 mm EN1092-1/11B1 (PN10/16/25/40) 1.4571 / 316Ti
- Tube outside diameter (OD): 21.3 mm
- Number of holes: 4
- Weight: 0.65 kg
- Norm: EN1092-1/11B1
- Nominal pressure: PN10/16/25/40
- Steel grade: 1.4571 / 316Ti
Availability:
available
Dispatched within: 3 days
Stainless steel forged weld neck flange DN150 168,3 mm EN1092-1/11B1 (PN10/16) 1.4571 / 316Ti
- Tube outside diameter (OD): 168.3 mm
- Number of holes: 8
- Weight: 7.36 kg
- Norm: EN1092-1/11B1
- Nominal pressure: PN10/16
- Steel grade: 1.4571 / 316Ti
Availability:
available
Dispatched within: 3 days
Stainless steel forged weld neck flange DN20 26,9 mm EN1092-1/11B1 (PN10/16/25/40) 1.4571 / 316Ti
- Tube outside diameter (OD): 26.9 mm
- Number of holes: 4
- Weight: 0.95 kg
- Norm: EN1092-1/11B1
- Nominal pressure: PN10/16/25/40
- Steel grade: 1.4571 / 316Ti
Availability:
available
Dispatched within: 3 days
Stainless steel forged weld neck flange DN25 33,7 mm EN1092-1/11B1 (PN10/16/25/40) 1.4571 / 316Ti
- Tube outside diameter (OD): 33.7 mm
- Number of holes: 4
- Weight: 1.12 kg
- Norm: EN1092-1/11B1
- Nominal pressure: PN10/16/25/40
- Steel grade: 1.4571 / 316Ti
Availability:
available
Dispatched within: 3 days
Stainless steel forged weld neck flange DN40 48,3 mm EN1092-1/11B1 (PN10/16/25/40) 1.4571 / 316Ti
- Tube outside diameter (OD): 48.3 mm
- Number of holes: 4
- Weight: 1.8 kg
- Norm: EN1092-1/11B1
- Nominal pressure: PN10/16/25/40
- Steel grade: 1.4571 / 316Ti
Availability:
available
Dispatched within: 3 days
Stainless steel forged weld neck flange DN65 76,1 mm EN1092-1/11B1 (PN10/16) 1.4571 / 316Ti
- Tube outside diameter (OD): 76.1 mm
- Number of holes: 8
- Weight: 3.06 kg
- Norm: EN1092-1/11B1
- Nominal pressure: PN10/16
- Steel grade: 1.4571 / 316Ti
Availability:
available
Dispatched within: 3 days
Stainless steel forged weld neck flange DN32 42,4 mm EN1092-1/11B1 (PN10/16/25/40) 1.4571 / 316Ti
- 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: 1.4571 / 316Ti
Availability:
available
Dispatched within: 3 days
Stainless steel forged weld neck flange DN50 60,3 mm EN1092-1/11B1 (PN10/16) 1.4571 / 316Ti
- Tube outside diameter (OD): 60.3 mm
- Number of holes: 4
- Weight: 2.47 kg
- Norm: EN1092-1/11B1
- Nominal pressure: PN10/16
- Steel grade: 1.4571 / 316Ti
Availability:
available
Dispatched within: 3 days
Stainless steel forged weld neck flange DN80 88,9 mm EN1092-1/11B1 (PN10/16) 1.4571 / 316Ti
- Tube outside diameter (OD): 88.9 mm
- Number of holes: 8
- Weight: 3.74 kg
- Norm: EN1092-1/11B1
- Nominal pressure: PN10/16
- Steel grade: 1.4571 / 316Ti
Availability:
available
Dispatched within: 3 days
Stainless steel weld neck flanges 1.4571/316Ti
What are stainless steel weld neck flanges 1.4571/316Ti?
Weld neck flanges are flanges with a long, tapered hub designed to be butt-welded to a pipe, creating a smooth transition of stress from the flange to the piping. When made from grade 1.4571 (commonly referred to as 316Ti), these are acid-resistant, austenitic stainless steel welding flanges ideal for demanding corrosion and high‑integrity welded joints. The same material is often referenced as AISI 316Ti (US) or DIN X6CrNiMoTi17‑12‑2 (Europe).
Material characteristics
1.4571 / 316Ti is a titanium‑stabilised austenitic stainless steel. The addition of titanium reduces the risk of intergranular corrosion after exposure to temperatures encountered during welding, so pre‑heating is typically unnecessary and post‑weld heat treatment is generally not required for most applications. Like other austenitic grades, 316Ti offers good formability, machinability and excellent general corrosion resistance, though it can be vulnerable to pitting and chloride‑induced stress corrosion cracking in aggressively chloride‑containing environments.
Typical applications and industries
- Chemical and petrochemical plants (acid‑resistant piping and equipment)
- Offshore and marine systems (where corrosion resistance is critical)
- Food, beverage and pharmaceutical industries (hygienic piping and process equipment)
- Power generation and heat exchangers
- Process engineering: pumps, valves, pressure vessels and pipework
- Construction, automotive and smaller workshop/garage fabrications that require durable stainless welds
Why choose weld neck flanges made of 1.4571/316Ti?
- Reliable welded connection: butt‑weld design reduces stress concentration and is preferred for high‑pressure / cyclic load systems.
- Improved corrosion resistance after welding: titanium stabilisation helps prevent sensitisation and intergranular corrosion.
- Good weldability: suitable for standard austenitic stainless steel welding procedures without mandatory preheating.
- Versatile use: suitable across many industries from industrial process plants to marine and sanitary applications.
Technical and ordering guidance
When selecting stainless steel weld neck flanges 1.4571/316Ti, consider the following practical points:
- Specify the material designation (EN 1.4571 / AISI 316Ti / DIN X6CrNiMoTi17‑12‑2) and the flange standard/dimension set required (e.g. EN/PN or ASME/ANSI) on your order.
- Confirm face type and bore requirements (raised face, flat face, tongue & groove, and bore size to match pipe schedule) so the flange fits correctly with your piping and components.
- Although post‑weld heat treatment is usually not required, for critical high‑temperature or highly corrosive services consult a materials or welding engineer to confirm suitability.
- For chloride‑rich or highly aggressive media, evaluate corrosion risks (pitting, crevice corrosion, chloride stress corrosion cracking) and consider alternative materials or protective measures if needed.
- Use appropriate austenitic stainless filler metals and approved welding procedures to preserve corrosion resistance and mechanical properties in the welded joint.
Who should buy these flanges?
Our stainless steel weld neck flanges 1.4571/316Ti are suited to purchasing engineers, fabricators, maintenance teams, shipbuilders, plant designers and small workshop owners looking for corrosion‑resistant, weldable flange solutions. They are ideal wherever a robust, long‑lasting welded connection is required in corrosive or sanitary service.
If you need assistance choosing the right size, face type or specification for your application, contact our technical team — we can help match the correct 1.4571/316Ti welding flange to your project requirements.