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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

DN80 (3" NB) SCHEDULE 40S A403 WELDED LONG RADIUS 90 DEG ELBOW SS 304
Outside Diameter (OD): 88.9mm
Wall Thickness: 5.49mm
Centre to Face: 114.3mm
Schedule: A403 Welded
Weight: 2.18kg

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
£ 92.68 92.68 GBP
DN80 (3" NB) SCHEDULE 40S A403 WELDED LONG RADIUS 90 DEG ELBOW SS 316
Outside Diameter (OD): 88.9mm
Wall Thickness: 5.49mm
Centre to Face: 114.3mm
Schedule: A403 Welded
Weight: 2.18kg

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
£ 142.94 142.94 GBP
DN80 (3" NB) SCHEDULE 40S A403 WELDED SHORT RADIUS 90 DEG ELBOW SS 304
Outside Diameter (OD): 88.9mm
Wall Thickness: 5.49mm
Centre to Face: 76.2mm
Schedule: A403 Welded
Weight: 1.38kg

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
£ 71.54 71.54 GBP
DN80 (3" NB) SCHEDULE 40S A403 WELDED SHORT RADIUS 90 DEG ELBOW SS 316
Outside Diameter (OD): 88.9mm
Wall Thickness: 5.49mm
Centre to Face: 76.2mm
Schedule: A403 Welded
Weight: 1.38kg

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
£ 106.96 106.96 GBP
DN80 (3" NB) SCHEDULE 40S ASA150 WELD NECK FLANGE SS 304
Outside diameter (O): 190.5mm
Flange thickness (C): 23.8mm
Hub length (X): 101.6mm
Neck height (A): 88.9mm
Pitch circle diameter (K): 152.4mm
Hub base diameter (Y): 69.8mm
Raised face height (RF): 15.5mm
Raised face diameter (R): 127.0mm
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

Part of our Flanges and Flanged Connections Range
£ 273.84 273.84 GBP
DN80 (3" NB) SCHEDULE 40S ASA150 WELD NECK FLANGE SS 316
Outside diameter (O): 190.5mm
Flange thickness (C): 23.8mm
Hub length (X): 101.6mm
Neck height (A): 88.9mm
Pitch circle diameter (K): 152.4mm
Hub base diameter (Y): 69.8mm
Raised face height (RF): 15.5mm
Raised face diameter (R): 127.0mm
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

Part of our Flanges and Flanged Connections Range
£ 323.82 323.82 GBP
DN80 (3" NB) SCHEDULE 40S ASA300 WELD NECK FLANGE SS 304
Outside diameter (O): 209.5mm
Flange thickness (C): 28.4mm
Hub height (X): 117.3mm
Length through hub (A): 88.9mm
Bolt circle diameter (K): 168.1mm
Overall height (Y): 79.2mm
Raised face thickness (RF): 1.5mm
Bore (B): 127.0mm
Number of bolt holes: 8
Bolt hole diameter: 22.3mm
Approx. weight: 7.4kg

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN80 (3" NB) SCHEDULE 40S ASA300 WELD NECK FLANGE SS 316
Outside diameter (O): 209.5mm
Flange thickness (C): 28.4mm
Hub height (X): 117.3mm
Length through hub (A): 88.9mm
Bolt circle diameter (K): 168.1mm
Overall height (Y): 79.2mm
Raised face thickness (RF): 1.5mm
Bore (B): 127.0mm
Number of bolt holes: 8
Bolt hole diameter: 22.3mm
Approx. weight: 7.4kg

Part of our Flanges and Flanged Connections Range
£ 631.05 631.05 GBP
DN80 (3" NB) SCHEDULE 40s SEAMLESS CAP END SS 316
Outside Diameter (OD): 88.9mm
Wall Thickness (WT): 5.49mm
Material: Stainless
Grade: 316
Standards: ANSI B16.9
Construction: Seamless

Applications:
Water, Oil & Gas / Petrochem, Steam, Fuels, Condensate, HVAC, Marine, Water & Waste Water, Mining, Construction, Power Generation (Energy), Waste to Energy (ERF)

Alternative terminology:
Cap, Blank, Stop end, Weld Cap
Contact us for pricing 0.0 GBP
DN80 (3" NB) SCHEDULE 40s SEAMLESS ELBOW 90° SS 316
Outside Diameter (OD): 88.9mm
Wall Thickness (WT): 5.49mm
Material: Stainless
Grade: 316
Standards: ANSI B16.9, Schedule 40s
Radius Centre to Face: 114.3mm
Angle: 90 Degree
Ends: Buttweld
Construction: Seamless
Certification Available: 3.1 BS EN 10204 Material Certification

Applications:
Water, Oil & Gas / Petrochem, Steam, Fuels, Condensate, HVAC, Marine, Water & Waste Water, Mining, Construction, Power Generation (Energy), Waste to Energy (ERF)

Alternative terminology:
Butt Weld, Weld Bends, Weld Elbow, Long Rad, 90s, SCH40
£ 147.00 147.0 GBP
DN80 (3" NB) SCHEDULE 40s SEAMLESS EQUAL TEE 90° SS 316
Outside Diameter (OD): 88.9mm
Wall Thickness (WT): 5.49mm
Material: Stainless
Grade: 316
Standards: ANSI B16.9
Construction: Seamless
Certification Available: 3.1 BS EN 10204 Material Certification
£ 185.50 185.5 GBP
DN80 (3" NB) SCHEDULE 40s STAINLESS SEAMLESS PIPE 304
Outside Diameter (OD): 88.9mm
Wall Thickness (WT): 5.49mm
Material: Stainless
Grade: 304
Standards: ASTM A312
Standard Length: 6 meter Random
Weight Per Meter: 11.36kg
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.

Part of our Stainless Pipes and Tubes Range
Contact us for pricing 0.0 GBP
DN80 (3" NB) SCHEDULE 40s STAINLESS SEAMLESS PIPE 316
Outside Diameter (OD): 88.9mm
Wall Thickness (WT): 5.49mm
Material: Stainless
Grade: 316
Standards: ASTM A312
Standard Length: 6 meter Random
Weight Per Meter: 11.36kg
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.

Part of our Stainless Pipes and Tubes Range
£ 465.50 465.5 GBP
DN80 (3" NB) SCHEDULE 40s STAINLESS WELDED PIPE 304
Outside Diameter (OD): 88.9mm
Wall Thickness (WT): 5.49mm (Sch40)
Material: Stainless
Grade: 304
Standards: ASTM A312
Standard Length: 6 meter Random
Weight Per Meter: 11.36kg
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.

Part of our Stainless Pipes and Tubes Range
£ 206.50 206.5 GBP
DN80 (3" NB) SCHEDULE 40s STAINLESS WELDED PIPE 316
Outside Diameter (OD): 88.9mm
Wall Thickness (WT): 5.49mm
Material: Stainless
Grade: 316
Standards: ASTM A312
Standard Length: 6 meter Random
Weight Per Meter: 11.36kg
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.

Part of our Stainless Pipes and Tubes Range
£ 498.26 498.26 GBP
DN80 (3" NB) SCHEDULE 40s WELDED CAP END SS 316
Outside Diameter (OD): 88.9mm
Wall Thickness (WT): 5.49mm
Material: Stainless
Grade: 316
Standards: ANSI B16.9
Construction: Welded

Applications:
Water, Oil & Gas / Petrochem, Steam, Fuels, Condensate, HVAC, Marine, Water & Waste Water, Mining, Construction, Power Generation (Energy), Waste to Energy (ERF)

Alternative terminology:
Cap, Blank, Stop end, Weld Cap
£ 101.85 101.85 GBP
DN80 (3" NB) SCHEDULE 80S ASA150 WELD NECK FLANGE SS 304
Outside diameter (O): 190.5mm
Flange thickness (C): 23.8mm
Hub length (X): 101.6mm
Neck height (A): 88.9mm
Pitch circle diameter (K): 152.4mm
Hub base diameter (Y): 69.8mm
Raised face height (RF): 15.5mm
Raised face diameter (R): 127.0mm
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

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN80 (3" NB) SCHEDULE 80S ASA150 WELD NECK FLANGE SS 316
Outside diameter (O): 190.5mm
Flange thickness (C): 23.8mm
Hub length (X): 101.6mm
Neck height (A): 88.9mm
Pitch circle diameter (K): 152.4mm
Hub base diameter (Y): 69.8mm
Raised face height (RF): 15.5mm
Raised face diameter (R): 127.0mm
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

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN80 (3" NB) SCHEDULE 80S ASA300 WELD NECK FLANGE SS 316
Outside diameter (O): 209.5mm
Flange thickness (C): 28.4mm
Hub height (X): 117.3mm
Length through hub (A): 88.9mm
Bolt circle diameter (K): 168.1mm
Overall height (Y): 79.2mm
Raised face thickness (RF): 1.5mm
Bore (B): 127.0mm
Number of bolt holes: 8
Bolt hole diameter: 22.3mm
Approx. weight: 7.4kg

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN80 (3" NB) SCHEDULE 80s STAINLESS SEAMLESS PIPE 304
Outside Diameter (OD): 88.9mm
Wall Thickness (WT): 7.62mm (Sch80)
Material: Stainless
Grade: 304
Standards: ASTM A312
Standard Length: 6 meter Random
Weight Per Meter: 15.50kg
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.

Part of our Stainless Pipes and Tubes Range
Contact us for pricing 0.0 GBP
DN80 (3" NB) SCHEDULE 80s STAINLESS SEAMLESS PIPE 316
Outside Diameter (OD): 88.9mm
Wall Thickness (WT): 7.62mm (Sch80)
Material: Stainless
Grade: 316
Standards: ASTM A312
Standard Length: 6 meter Random
Weight Per Meter: 15.50kg
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.

Part of our Stainless Pipes and Tubes Range
£ 1,207.92 1207.92 GBP
DN80 (3" NB) SOCKET WELD 3000# ELBOW 90° SS 316/L
Both sides: 3" Socket Weld
Suits an outside diameter (OD) of: 88.9mm
Material: Stainless 316/L

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.
£ 1,505.00 1505.0 GBP
DN80 (3" NB) SOCKET WELD 3000# FULL COUPLING SS 316/L
Both sides: 3" Socket Weld
Suits an outside diameter (OD) of: 88.9mm
Material: Stainless 316/L

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

Alternative terminology:
Forged, Stainless, Socket Weld, Coupling, Socket, Straight, Equal.
£ 567.00 567.0 GBP
DN80 (3" NB) SOCKET WELD 3PC FB BALL VALVE LEVER OP. SS 316
Threaded: 3" NB Socket Weld (SW)
Suits an outside diameter (OD) of: 88.9mm
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

Part of our Isolation and Valves Range
£ 958.51 958.51 GBP
DN80 (3" NB) SW 150# ELBOW 45° SS 316
Thread: 3" SW (Socket Weld)
Suits an outside diameter (OD) of: 88.9mm
Material: Stainless
Grade: 316
Elbow Angle: 45° (Degree)

Standards:
Nominal Bore, Socket Weld, Elbow, 45°, 45 Deg, Weldable, Low Pressure, 150 psi
£ 157.22 157.22 GBP
DN80 (3" NB) SW 150# ELBOW 90° SS 316
Thread: 3" SW (Socket Weld)
Suits an outside diameter (OD) of: 88.9mm
Material: Stainless
Grade: 316
Elbow Angle: 90° (Degree)

Standards:
Nominal Bore, Socket Weld, Elbow, 90°, 90 Deg, Weldable, Low Pressure, 150 psi
£ 232.40 232.4 GBP
DN80 (3" NB) SW 150# (FXF) CONE SEAT UNION SS 316
Thread: 3" SW (Socket Weld)
Suits an outside diameter (OD) of: 88.9mm
Material: Stainless
Grade: 316
£ 289.10 289.1 GBP
DN80 (3" NB) SW 150# EQUAL FULL SOCKET SS 316
Connection: 3" SW (Socket Weld)
Suits an outside diameter (OD) of: 88.9mm
Material: Stainless
Grade: 316
£ 92.96 92.96 GBP
DN80 (3" NB) SW 150# EQUAL TEE SS 316
Thread: 3" SW (Socket Weld)
Suits an outside diameter of 88.9mm

Material: Stainless
Grade: 316

Standards:
Nominal Bore, SW (Socket Weld), Equal, Tee, Tee Piece, Weldable, Low Pressure, 150 psi
£ 261.38 261.38 GBP
DN80 (3" NB) SW 150# ROUND CAP SS 316
Thread: 3" SW (Socket Weld)
Suits an outside diameter (OD) of: 88.9mm
Material: Stainless
Grade: 316

Standards:
Nominal Bore, SW (Socket Weld), Weldable, Low Pressure, 150 psi

Alternative terminology:
SW Cap, Termination, Blanking Cap, Cap End
£ 91.98 91.98 GBP
DN80 (3" NB) SW 3000# EQUAL COUPLING SS 316
Connection: 3" SW
Suits an outside diameter (OD) of: 88.9mm
Material: Forged Stainless Steel
Grade: 316
Construction: Forged Stainless Steel
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Coupling, Socket, Straight, Connector, Stainless Steel
£ 965.37 965.37 GBP
DN80 (3" NB) U-BOLT C.W NUTS SS 304 (A2)
Suits an outside diameter (OD) of: 88.9mm
Material: Stainless Steel 304 (A2)
Thread: M12
Comes with 2x Nuts
Contact us for pricing 0.0 GBP
DN80 (3" NB) U-BOLT C.W NUTS SS 316 (A4)
Suits an outside diameter (OD) of: 88.9mm
Material: Stainless Steel 316 (A4)
Thread: M12
Comes with 2x Nuts
Contact us for pricing 0.0 GBP
DN80 (3" NB) U-BOLT C.W NUTS SS A4/316
Suits an outside diameter (OD) of: 88.9mm
Material: Stainless
Thread: M12


£ 57.40 57.4 GBP
DN80 (3" NB) UN-BOSSED SPLIT BAND HANGER SS 304
Suits an outside diameter (OD) of: 88.9mm
Band width: 40mm
Band thickness: 3mm
Bolt Size: M10
Material: Stainless Steel
Grade: 304
Contact us for pricing 0.0 GBP
DN80 PN10/PN16 RF SLIP ON PLATE FLANGE SS 304
Flange inside diameter of: 90.5mm (B1)
Flange overall diameter: 200mm (D)
PCD: 160mm (K)
Bolt Holes: 8 off 18mm diameter (L)
Flange Thickness: 20mm (C1)
Diameter of Raised Face (RF): 138mm (D1)
Height of raised face: 3mm (F1)
Material: Stainless Steel
Grade: 304
Standards: EN1092-1
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Stainless Steel, Steel, Raised Faced, RFSO

Part of our Flanges and Flanged Connections Range
£ 94.57 94.57 GBP
DN80 PN10/PN16 RF SLIP ON PLATE FLANGE SS 316
Flange inside diameter of: 90.5mm (B1)
Flange overall diameter: 200mm (D)
PCD: 160mm (K)
Bolt Holes: 8 off 18mm diameter (L)
Flange Thickness: 20mm (C1)
Diameter of Raised Face (RF): 138mm (D1)
Height of raised face: 3mm (F1)
Material: Stainless Steel
Grade: 316
Standards: EN1092-1
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Stainless Steel, Steel, Raised Faced, RFSO

Part of our Flanges and Flanged Connections Range
£ 135.03 135.03 GBP
DN80 PN25 / PN40 RF BLIND FLANGE SS 304
Flange OD (D): 200mm
Drilling (No. x Bolt Holes x L): 8 x M16 x 18mm
Pitch circle diameter (K): 160mm
Flange thickness (C4): 24mm
Material: 304
Rating: PN40
Type: Blind flange (EN1092-1 Type 05)

Standards: EN1092-1
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Blank Flange, Blind, Stainless Steel, Stainless Steel, Raised Faced, RF Blind

Part of our Flanges and Flanged Connections Range
£ 315.21 315.21 GBP
DN80 PN25 / PN40 RF BLIND FLANGE SS 316
Flange OD (D): 200mm
Drilling (No. x Bolt Holes x L): 8 x M16 x 18mm
Pitch circle diameter (K): 160mm
Flange thickness (C4): 24mm
Material: 316
Rating: PN40
Type: Blind flange (EN1092-1 Type 05)

Standards: EN1092-1
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Blank Flange, Blind, Stainless Steel, Stainless Steel, Raised Faced, RF Blind

Part of our Flanges and Flanged Connections Range
£ 229.88 229.88 GBP
DN80 PN25/PN40 RF SLIP ON PLATE FLANGE SS 304
Flange inside diameter of: 90.5mm (B1)
Flange overall diameter: 200mm (D)
PCD: 160mm (K)
Bolt Holes: 8 off 18mm diameter (L)
Flange Thickness: 24mm (C1)
Diameter of Raised Face (RF): 128mm (D1)
Height of raised face: 3mm (F1)
Material: Stainless Steel
Grade: 304
Standards: EN1092-1
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Stainless Steel, Steel, Raised Faced, RFSO

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP