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Nominal Bore

Stainless Steel Nominal Bore Pipework – 304 & 316 Systems

Integraflow supplies complete nominal bore stainless steel pipework systems in 304 and 316/L grades, including pipe, fittings, flanges, valves, and supports in welded, seamless, threaded, and socket weld configurations, ideal for corrosive, and industrial environments across food, pharmaceutical, chemical, and mechanical sectors.

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Nominal Bore

DN25 (1" NB) SCHEDULE 10s WELDED ELBOW 45° SS 316
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 2.77mm
Material: Stainless
Grade: 316
Standards: ANSI B16.9
Radius: 1.5D
Angle: 45 Degree
Construction: Welded
Certification Available: 3.1 BS EN 10204 Material Certification
£ 11.55 11.55 GBP
DN25 (1" NB) SCHEDULE 10s WELDED ELBOW 90° SS 304
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 2.77mm
Material: Stainless
Grade: 304
Standards: ANSI B16.9
Radius: Long 1.5D
Angle: 90 Degree
Construction: Welded
Certification Available: 3.1 BS EN 10204 Material Certification
£ 15.82 15.82 GBP
DN25 (1" NB) SCHEDULE 10s WELDED ELBOW 90° SS 316
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 2.77mm
Material: Stainless
Grade: 316
Standards: ANSI B16.9
Radius: Long 1.5D
Angle: 90 Degree
Construction: Welded
Certification Available: 3.1 BS EN 10204 Material Certification
£ 15.82 15.82 GBP
DN25 (1" NB) SCHEDULE 40S A403 SEAMLESS EQUAL TEE SS 304
Outside Diameter (OD): 33.4mm
Wall Thickness: 3.38mm
Centre to End: 38.1mm
Schedule: 40s
Weight: 0.35kg

Material: Stainless Steel
Material Grade: ASTM A403

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Tee, Equal Tee, LR, Welding Tee, Weldable
£ 30.17 30.17 GBP
DN25 (1" NB) SCHEDULE 40S A403 SEAMLESS EQUAL TEE SS 316
Outside Diameter (OD): 33.4mm
Wall Thickness: 3.38mm
Centre to End: 38.1mm
Schedule: 40s
Weight: 0.35kg

Material: Stainless Steel
Material Grade: ASTM A403

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Tee, Equal Tee, LR, Welding Tee, Weldable
£ 38.43 38.43 GBP
DN25 (1" NB) SCHEDULE 40S A403 SEAMLESS LONG RADIUS 90 DEG ELBOW SS 304
Outside Diameter (OD): 33.4mm
Wall Thickness: 3.38mm
Centre to Face: 38.1mm
Schedule: A403 Seamless
Weight: 0.15kg

Material: Stainless Steel
Material Grade: 304

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Elbow, Long Radius, 90°, LR, Bend, Weldable
Contact us for pricing 0.0 GBP
DN25 (1" NB) SCHEDULE 40S A403 SEAMLESS LONG RADIUS 90 DEG ELBOW SS 316
Outside Diameter (OD): 33.4mm
Wall Thickness: 3.38mm
Centre to Face: 38.1mm
Schedule: A403 Seamless
Weight: 0.15kg

Material: Stainless Steel
Material Grade: 316

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Elbow, Long Radius, 90°, LR, Bend, Weldable
Contact us for pricing 0.0 GBP
DN25 (1" NB) SCHEDULE 40S A403 SEAMLESS SHORT RADIUS 90 DEG ELBOW SS 304
Outside Diameter (OD): 33.4mm
Wall Thickness: 3.38mm
Centre to Face: 25.4mm
Schedule: A403 Seamless
Weight: 0.1kg

Material: Stainless Steel
Material Grade: 304

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Elbow, Short Radius, 90°, SR, Bend, Weldable
Contact us for pricing 0.0 GBP
DN25 (1" NB) SCHEDULE 40S A403 SEAMLESS SHORT RADIUS 90 DEG ELBOW SS 316
Outside Diameter (OD): 33.4mm
Wall Thickness: 3.38mm
Centre to Face: 25.4mm
Schedule: A403 Seamless
Weight: 0.1kg

Material: Stainless Steel
Material Grade: 316

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Elbow, Short Radius, 90°, SR, Bend, Weldable
Contact us for pricing 0.0 GBP
DN25 (1" NB) SCHEDULE 40S A403 WELDED EQUAL TEE SS 304
Outside Diameter (OD): 33.4mm
Wall Thickness: 3.38mm
Centre to End: 38.1mm
Schedule: 40s
Weight: 0.35kg

Material: Stainless Steel
Material Grade: ASTM A403

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Tee, Equal Tee, LR, Welding Tee, Weldable
£ 30.17 30.17 GBP
DN25 (1" NB) SCHEDULE 40S A403 WELDED EQUAL TEE SS 316
Outside Diameter (OD): 33.4mm
Wall Thickness: 3.38mm
Centre to End: 38.1mm
Schedule: 40s
Weight: 0.35kg

Material: Stainless Steel
Material Grade: ASTM A403

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Tee, Equal Tee, LR, Welding Tee, Weldable
£ 38.43 38.43 GBP
DN25 (1" NB) SCHEDULE 40S A403 WELDED LONG RADIUS 45 DEG ELBOW SS 304
Outside Diameter (OD): 33.4mm
Wall Thickness: 3.38mm

Schedule: A403 Welded
Weight: 0.1kg

Material: Stainless Steel
Material Grade: 304

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Elbow, Long Radius, 45°, LR, Bend, Weldable
£ 12.46 12.46 GBP
DN25 (1" NB) SCHEDULE 40S A403 WELDED LONG RADIUS 45 DEG ELBOW SS 316
Outside Diameter (OD): 33.4mm
Wall Thickness: 3.38mm

Schedule: A403 Welded
Weight: 0.1kg

Material: Stainless Steel
Material Grade: 316

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Elbow, Long Radius, 45°, LR, Bend, Weldable
£ 15.47 15.47 GBP
DN25 (1" NB) SCHEDULE 40S A403 WELDED LONG RADIUS 90 DEG ELBOW SS 304
Outside Diameter (OD): 33.4mm
Wall Thickness: 3.38mm
Centre to Face: 38.1mm
Schedule: A403 Welded
Weight: 0.15kg

Material: Stainless Steel
Material Grade: 304

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Elbow, Long Radius, 90°, LR, Bend, Weldable
£ 14.42 14.42 GBP
DN25 (1" NB) SCHEDULE 40S A403 WELDED LONG RADIUS 90 DEG ELBOW SS 316
Outside Diameter (OD): 33.4mm
Wall Thickness: 3.38mm
Centre to Face: 38.1mm
Schedule: A403 Welded
Weight: 0.15kg

Material: Stainless Steel
Material Grade: 316

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Elbow, Long Radius, 90°, LR, Bend, Weldable
£ 17.92 17.92 GBP
DN25 (1" NB) SCHEDULE 40S A403 WELDED SHORT RADIUS 90 DEG ELBOW SS 304
Outside Diameter (OD): 33.4mm
Wall Thickness: 3.38mm
Centre to Face: 25.4mm
Schedule: A403 Welded
Weight: 0.1kg

Material: Stainless Steel
Material Grade: 304

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Elbow, Short Radius, 90°, SR, Bend, Weldable
£ 12.46 12.46 GBP
DN25 (1" NB) SCHEDULE 40S A403 WELDED SHORT RADIUS 90 DEG ELBOW SS 316
Outside Diameter (OD): 33.4mm
Wall Thickness: 3.38mm
Centre to Face: 25.4mm
Schedule: A403 Welded
Weight: 0.1kg

Material: Stainless Steel
Material Grade: 316

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Elbow, Short Radius, 90°, SR, Bend, Weldable
£ 15.47 15.47 GBP
DN25 (1" NB) SCHEDULE 40S ASA150 WELD NECK FLANGE SS 304
Outside diameter (O): 107.9mm
Flange thickness (C): 14.2mm
Hub length (X): 49.2mm
Neck height (A): 33.5mm
Pitch circle diameter (K): 79.2mm
Hub base diameter (Y): 55.6mm
Raised face height (RF): 15.5mm
Raised face diameter (R): 50.8mm
Number of bolt holes: 4
Material: 304 Stainless Steel
Rating: ASA 150
Type: Weld Neck Flange (ASME B16.5)

Standards: ASME B16.5
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
WN Flange, Welding Neck, ASA150, Stainless Steel, RF
£ 47.88 47.88 GBP
DN25 (1" NB) SCHEDULE 40S ASA150 WELD NECK FLANGE SS 316
Outside diameter (O): 107.9mm
Flange thickness (C): 14.2mm
Hub length (X): 49.2mm
Neck height (A): 33.5mm
Pitch circle diameter (K): 79.2mm
Hub base diameter (Y): 55.6mm
Raised face height (RF): 15.5mm
Raised face diameter (R): 50.8mm
Number of bolt holes: 4
Material: 316 Stainless Steel
Rating: ASA 150
Type: Weld Neck Flange (ASME B16.5)

Standards: ASME B16.5
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
WN Flange, Welding Neck, ASA150, Stainless Steel, RF
£ 69.09 69.09 GBP
DN25 (1" NB) SCHEDULE 40s SEAMLESS ELBOW 45° SS 316
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 3.91mm
Material: Stainless
Grade: 316
Standards: ANSI B16.9
Radius: 1.5D
Angle: 45 Degree
Construction: Seamless
Certification Available: 3.1 BS EN 10204 Material Certification
£ 19.95 19.95 GBP
DN25 (1" NB) SCHEDULE 40s STAINLESS SEAMLESS PIPE 304
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 3.38mm (Sch40)
Material: Stainless
Grade: 304
Standards: ASTM A312
Standard Length: 6 meters
Weight Per Meter: 2.54
Construction: Seamless
Certification Available: 3.1 BS EN 10204 Material Certification

Note: Sold online only in 1 meter increments. Please get in touch for specific cutting requirements.

Contact us for pricing 0.0 GBP
DN25 (1" NB) SCHEDULE 40s STAINLESS SEAMLESS PIPE 316
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 3.38mm
Material: Stainless
Grade: 316
Standards: ASTM A312
Standard Length: 6 meter Random
Weight Per Meter: 2.52kg
Construction: Seamless
Certification Available: 3.1 BS EN 10204 Material Certification

Note: Sold online only in 1 meter increments. Please get in touch for specific cutting requirements.
£ 122.50 122.5 GBP
DN25 (1" NB) SCHEDULE 40s STAINLESS WELDED PIPE 304
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 3.38mm (Sch40)
Material: Stainless
Grade: 304
Standards: ASTM A312
Standard Length: 6 meter Random
Weight Per Meter: 2.52kg
Construction: Welded
Certification Available: 3.1 BS EN 10204 Material Certification

Note: Sold online only in 1 meter increments. Please get in touch for specific cutting requirements.
£ 56.21 56.21 GBP
DN25 (1" NB) SCHEDULE 40s STAINLESS WELDED PIPE 316
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 3.38mm (Sch40)
Material: Stainless
Grade: 316
Standards: ASTM A312
Standard Length: 6 meters
Weight Per Meter: 2.54
Construction: Welded
Certification Available: 3.1 BS EN 10204 Material Certification

Note: Sold online only in 1 meter increments. Please get in touch for specific cutting requirements.

£ 104.44 104.44 GBP
DN25 (1" NB) SCHEDULE 40s WELDED ELBOW 45° SS 316
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 3.91mm
Material: Stainless
Grade: 304
Standards: ANSI B16.9
Radius: 1.5D
Angle: 45 Degree
Construction: Welded
Certification Available: 3.1 BS EN 10204 Material Certification
£ 13.16 13.16 GBP
DN25 (1" NB) SCHEDULE 40s WELDED ELBOW 90° SS 304
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 3.91mm
Material: Stainless
Grade: 304
Standards: ANSI B16.9
Radius: Long 1.5D
Angle: 90 Degree
Construction: Welded
Certification Available: 3.1 BS EN 10204 Material Certification
£ 33.60 33.6 GBP
DN25 (1" NB) SCHEDULE 40s WELDED ELBOW 90° SS 316
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 3.91mm
Material: Stainless
Grade: 316
Standards: ANSI B16.9
Radius: Long 1.5D
Angle: 90 Degree
Construction: Welded
Certification Available: 3.1 BS EN 10204 Material Certification
£ 35.14 35.14 GBP
DN25 (1" NB) SCHEDULE 40s WELDED EQUAL TEE SS 316
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 3.91mm
Material: Stainless
Grade: 316
Standards: ANSI B16.9
Construction: Welded
Certification Available: 3.1 BS EN 10204 Material Certification
£ 59.43 59.43 GBP
DN25 (1" NB) SCHEDULE 80S ASA150 WELD NECK FLANGE SS 304
Outside diameter (O): 107.9mm
Flange thickness (C): 14.2mm
Hub length (X): 49.2mm
Neck height (A): 33.5mm
Pitch circle diameter (K): 79.2mm
Hub base diameter (Y): 55.6mm
Raised face height (RF): 15.5mm
Raised face diameter (R): 50.8mm
Number of bolt holes: 4
Material: Stainless Steel 304
Rating: ASA 150
Type: Weld Neck Flange (ASME B16.5)

Standards: ASME B16.5
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
WN Flange, Welding Neck, ASA150, Stainless Steel, RF
Contact us for pricing 0.0 GBP
DN25 (1" NB) SCHEDULE 80S ASA150 WELD NECK FLANGE SS 316
Outside diameter (O): 107.9mm
Flange thickness (C): 14.2mm
Hub length (X): 49.2mm
Neck height (A): 33.5mm
Pitch circle diameter (K): 79.2mm
Hub base diameter (Y): 55.6mm
Raised face height (RF): 15.5mm
Raised face diameter (R): 50.8mm
Number of bolt holes: 4
Material: Stainless Steel 316
Rating: ASA 150
Type: Weld Neck Flange (ASME B16.5)

Standards: ASME B16.5
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
WN Flange, Welding Neck, ASA150, Stainless Steel, RF
Contact us for pricing 0.0 GBP
DN25 (1" NB) SCHEDULE 80s STAINLESS SEAMLESS PIPE 304
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 4.55mm (Sch80)
Material: Stainless
Grade: 304
Standards: ASTM A312
Standard Length: 6 meter Random
Weight Per Meter: 3.24kg
Construction: Seamless
Certification Available: 3.1 BS EN 10204 Material Certification

Note: Sold online only in 1 meter increments. Please get in touch for specific cutting requirements.
Contact us for pricing 0.0 GBP
DN25 (1" NB) SCHEDULE 80s STAINLESS SEAMLESS PIPE 316
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 4.55mm (Sch80)
Material: Stainless
Grade: 316
Standards: ASTM A312
Standard Length: 6 meter Random
Weight Per Meter: 3.24kg
Construction: Seamless
Certification Available: 3.1 BS EN 10204 Material Certification

Note: Sold online only in 1 meter increments. Please get in touch for specific cutting requirements.
£ 199.57 199.57 GBP
DN25 (1" NB) SOCKET WELD 150# ELBOW 90° SS 316
Connection: 1" SW Socket Weld
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316
£ 38.50 38.5 GBP
DN25 (1" NB) SOCKET WELD 3000# ELBOW 90° SS 316
Both sides: 1" Socket Weld
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless 316

Standards:
Nominal Bore, Socket Weld, High Pressure, 3000 psi, 3000 lb, Class 3000, Forged Stainless, ANSI B16.11/BS3799

Applications:
High Pressure Applications, Steam, Chemicals, Water, Oil & Gasses*

Alternative terminology:
Forged, Stainless, Socket Weld, 90, 90° Elbow, Fittings.
£ 82.60 82.6 GBP
DN25 (1" NB) SOCKET WELD 3000# FULL COUPLING SS 316
Both sides: 1" Socket Weld
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless 316

Standards:
Nominal Bore, Socket Weld, High Pressure, 3000 psi, 3000 lb, Class 3000, Forged Stainless, ANSI B16.11/BS3799

Applications:
High Pressure Applications, Steam, Chemicals, Water, Oil & Gasses*

Alternative terminology:
Forged, Stainless, Socket Weld, Coupling, Socket, Straight, Equal.
£ 62.37 62.37 GBP
DN25 (1" NB) SOCKET WELD 3PC FB BALL VALVE LEVER OP. SS 316
Threaded: 1" NB Socket Weld (SW)
Suits an outside diameter (OD) of: 33.4mm
Construction: 3 Piece
Body Material: 316 Stainless
Connection: Socket Weld
Bore: Full Bore
Internals: PTFE Seals

Applications:
Water, Oil & Gas* - Heating and Plumbing, HVAC, Gasses* and Compressed Air, Agricultural Irrigation, Fuel and Oils, Cooling, Marine, Fire Protection Sprinkler Systems, Food & Beverage.

Alternative terminology:
Isolation Valve, Lever Valve, Handle Valve, Shut off Valve, Quarter 1/4 Turn
£ 156.10 156.1 GBP
DN25 (1" NB) SW 150# ELBOW 45° SS 316
Thread: 1" SW (Socket Weld)
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316
Elbow Angle: 45° (Degree)

Standards:
Nominal Bore, Socket Weld, Elbow, 45°, 45 Deg, Weldable, Low Pressure, 150 psi
£ 26.74 26.74 GBP
DN25 (1" NB) SW 150# ELBOW 90° SS 316
Thread: 1" SW (Socket Weld)
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316
Elbow Angle: 90° (Degree)

Standards:
Nominal Bore, Socket Weld, Elbow, 90°, 90 Deg, Weldable, Low Pressure, 150 psi
£ 26.32 26.32 GBP
DN25 (1" NB) SW 150# (FXF) CONE SEAT UNION SS 316
Thread: 1" SW (Socket Weld)
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316

Standards:
Nominal Bore, Threaded, Screwed, Low Pressure, 150 psi
£ 32.27 32.27 GBP
DN25 (1" NB) SW 150# EQUAL FULL SOCKET SS 316
Connection: 1" SW (Socket Weld)
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316

Standards:
Nominal Bore, Threaded, Screwed, Low Pressure, 150 psi
£ 21.21 21.21 GBP