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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

DN65 X DN50 (2½" X 2" NB) SCHEDULE 40S A403 WELDED CONCENTRIC REDUCER SS 304
Outside Diameter (OD): 73 X 60mm
Wall Thickness: 5.16 X 3.91mm
Length: 89mm
£ 43.96 43.96 GBP
DN65 X DN50 (2½" X 2" NB) SCHEDULE 40S A403 WELDED CONCENTRIC REDUCER SS 316
Outside Diameter (OD): 73 X 60mm
Wall Thickness: 5.16 X 3.91mm
Length: 89mm
£ 63.49 63.49 GBP
DN65 X DN50 (2½" X 2" NB) SCHEDULE 40S A403 WELDED ECCENTRIC REDUCER SS 304
Outside Diameter (OD): 73 X 60mm
Wall Thickness: 5.16 X 3.91mm
Length: 89mm
£ 64.19 64.19 GBP
DN65 X DN50 (2½" X 2" NB) SCHEDULE 40S A403 WELDED ECCENTRIC REDUCER SS 316
Outside Diameter (OD): 73 X 60mm
Wall Thickness: 5.16 X 3.91mm
Length: 89mm
£ 77.63 77.63 GBP
DN65 x DN50 (2.1/2 x 2" NB) SCHEDULE 10S A403 SEAMLESS REDUCING TEE SS 304
Outside Diameter (OD): 73 x 60mm
Wall Thickness (Run x Branch): 3.05 x 2.77mm
Centre to End (Run): 76mm
Centre to End (Branch): 70mm
Schedule: 10S
Weight: 0.95kg

Material: Stainless Steel
Material Grade: 304

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Tee, Reducing Tee, LR, Welding Tee, Weldable
Contact us for pricing 0.0 GBP
DN65 x DN50 (2.1/2 x 2" NB) SCHEDULE 10S A403 SEAMLESS REDUCING TEE SS 316
Outside Diameter (OD): 73 x 60mm
Wall Thickness (Run x Branch): 3.05 x 2.77mm
Centre to End (Run): 76mm
Centre to End (Branch): 70mm
Schedule: 10S
Weight: 0.95kg

Material: Stainless Steel
Material Grade: 316

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Tee, Reducing Tee, LR, Welding Tee, Weldable
Contact us for pricing 0.0 GBP
DN65 x DN50 (2.1/2 x 2" NB) SCHEDULE 10S A403 WELDED REDUCING TEE SS 304
Outside Diameter (OD): 73 x 60mm
Wall Thickness (Run x Branch): 3.05 x 2.77mm
Centre to End (Run): 76mm
Centre to End (Branch): 70mm
Schedule: 10S
Weight: 0.95kg

Material: Stainless Steel
Material Grade: 304

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Tee, Reducing Tee, LR, Welding Tee, Weldable
£ 104.30 104.3 GBP
DN65 x DN50 (2.1/2 x 2" NB) SCHEDULE 10S A403 WELDED REDUCING TEE SS 316
Outside Diameter (OD): 73 x 60mm
Wall Thickness (Run x Branch): 3.05 x 2.77mm
Centre to End (Run): 76mm
Centre to End (Branch): 70mm
Schedule: 10S
Weight: 0.95kg

Material: Stainless Steel
Material Grade: 316

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Tee, Reducing Tee, LR, Welding Tee, Weldable
£ 100.17 100.17 GBP
DN65 x DN50 (2.1/2 x 2" NB) SCHEDULE 40S A403 SEAMLESS REDUCING TEE SS 304
Outside Diameter (OD): 73 x 60mm
Wall Thickness (Run x Branch): 5.16 x 3.91mm
Centre to End (Run): 76mm
Centre to End (Branch): 70mm
Schedule: 40s
Weight: 2.68kg

Material: Stainless Steel
Material Grade: 304

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Tee, Reducing Tee, LR, Welding Tee, Weldable
Contact us for pricing 0.0 GBP
DN65 x DN50 (2.1/2 x 2" NB) SCHEDULE 40S A403 SEAMLESS REDUCING TEE SS 316
Outside Diameter (OD): 73 x 60mm
Wall Thickness (Run x Branch): 5.16 x 3.91mm
Centre to End (Run): 76mm
Centre to End (Branch): 70mm
Schedule: 40s
Weight: 2.68kg

Material: Stainless Steel
Material Grade: 316

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Tee, Reducing Tee, LR, Welding Tee, Weldable
Contact us for pricing 0.0 GBP
DN65 x DN50 (2.1/2 x 2" NB) SCHEDULE 40S A403 WELDED REDUCING TEE SS 304
Outside Diameter (OD): 73 x 60mm
Wall Thickness (Run x Branch): 5.16 x 3.91mm
Centre to End (Run): 76mm
Centre to End (Branch): 70mm
Schedule: 40s
Weight: 2.68kg

Material: Stainless Steel
Material Grade: 304

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Tee, Reducing Tee, LR, Welding Tee, Weldable
£ 114.73 114.73 GBP
DN65 x DN50 (2.1/2 x 2" NB) SCHEDULE 40S A403 WELDED REDUCING TEE SS 316
Outside Diameter (OD): 73 x 60mm
Wall Thickness (Run x Branch): 5.16 x 3.91mm
Centre to End (Run): 76mm
Centre to End (Branch): 70mm
Schedule: 40s
Weight: 2.68kg

Material: Stainless Steel
Material Grade: 316

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Tee, Reducing Tee, LR, Welding Tee, Weldable
£ 163.87 163.87 GBP
DN8 (1/4" NB) SW 3000# UNION SS 316
Connection: 1/4" SW (Socket Weld)
Suits an outside diameter (OD) of: 13.79mm
Material: Forged Stainless Steel
Grade: 316
Construction: Forged Stainless Steel
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Union, FXF, Stainless Steel
£ 78.40 78.4 GBP
DN80 (3 NB) SCHEDULE 80S 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
£ 631.05 631.05 GBP
DN80 (3" NB) ASA150 FLANGED 2PC LEVER OP. BALL VALVE LEVER OP SS 316
Flanged both ends: 3" ASA 150
Suits an outside diameter (OD) of: 88.9mm
PCD: 152.4mm Ø (ANSI 150)
Face to face: 203mm
Construction: 2 Piece
Body Material: CF8/CF8M (316) Stainless
Bore: Full Bore
Internals: PTFE Seals
Investment Casting
Blowout proof stem

Part of our Isolation and Valves Range

Part of our Flanges and Flanged Connections Range
£ 1,735.44 1735.44 GBP
DN80 (3" NB) ASA150 RF BLIND FLANGE SS 304
Outside diameter (O): 190.5mm
Flange thickness (C): 23.8mm
Pitch circle diameter (K): 152.4mm
Raised face height (RF): 1.5mm
Raised face diameter (R): 127.0mm
Number of bolt holes: 4
Material: Stainless Steel 304
Rating: ASA 150
Type: Blind flange (ASME B16.5)

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

Alternative terminology:
Blind Flange, Blank, ASA150, Stainless Steel, Raised Faced

Part of our Flanges and Flanged Connections Range
£ 181.02 181.02 GBP
DN80 (3" NB) ASA150 RF BLIND FLANGE SS 316
Outside diameter (O): 190.5mm
Flange thickness (C): 23.8mm
Pitch circle diameter (K): 152.4mm
Raised face height (RF): 1.5mm
Raised face diameter (R): 127.0mm
Number of bolt holes: 4
Material: Stainless Steel 316
Rating: ASA 150
Type: Blind flange (ASME B16.5)

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

Alternative terminology:
Blind Flange, Blank, ASA150, Stainless Steel, Raised Faced

Part of our Flanges and Flanged Connections Range
£ 271.04 271.04 GBP
DN80 (3" NB) ASA150 RF BOSSED SLIP ON FLANGE SS 304
Flange outside diameter: 190.5mm (O)
Flange thickness: 23.8mm (C)
Flange hub height: 30.2mm (Y)
Pitch Circle Diameter (PCD): 152.4mm (K)
Raised Face Height: 1.5mm (RF)
Bolt Holes: 4 off 19.0mm diameter
Bore Diameter: 90.6mm (B)
Material: Stainless Steel
Grade: 304
Standards: ASME B16.5
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Stainless Steel, Raised Faced, ASA 150LB, SOB

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN80 (3" NB) ASA150 RF BOSSED SLIP ON FLANGE SS 316
Flange outside diameter: 190.5mm (O)
Flange thickness: 23.8mm (C)
Flange hub height: 30.2mm (Y)
Pitch Circle Diameter (PCD): 152.4mm (K)
Raised Face Height: 1.5mm (RF)
Bolt Holes: 4 off 19.0mm diameter
Bore Diameter: 90.6mm (B)
Material: Stainless Steel
Grade: 316
Standards: ASME B16.5
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Stainless Steel, Raised Faced, ASA 150LB, SOB

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN80 (3" NB) ASA1500 RF BOSSED SLIP ON FLANGE SS 304
Flange outside diameter: 266.7mm (O)
Flange thickness: 47.7mm (C)
Flange hub height: 63.5mm (Y)
Pitch Circle Diameter (PCD): 203.2mm (K)
Raised Face Height: 6.3mm (RF)
Bolt Holes: 8 off 31.7mm diameter
Bore Diameter: 90.6mm (B)
Material: Stainless Steel
Grade: 304
Standards: ASME B16.5
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Stainless Steel, Raised Faced, ASA 1500LB, SOB

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN80 (3" NB) ASA1500 RF BOSSED SLIP ON FLANGE SS 316
Flange outside diameter: 266.7mm (O)
Flange thickness: 47.7mm (C)
Flange hub height: 63.5mm (Y)
Pitch Circle Diameter (PCD): 203.2mm (K)
Raised Face Height: 6.3mm (RF)
Bolt Holes: 8 off 31.7mm diameter
Bore Diameter: 90.6mm (B)
Material: Stainless Steel
Grade: 316
Standards: ASME B16.5
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Stainless Steel, Raised Faced, ASA 1500LB, SOB

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN80 (3" NB) ASA300 RF BLIND FLANGE SS 304
Outside diameter (O): 209.5mm
Flange thickness (C): 28.4mm
Pitch circle diameter (K): 168.1mm
Raised face height (RF): 1.5mm
Raised face diameter (R): 127.0mm
Number of bolt holes: 8
Material: Stainless Steel 304
Rating: ASA 300
Type: Blind flange (ASME B16.5)

Standards: ASME B16.5
Flange Face: Raised Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Blind Flange, Blank, ASA300, Stainless Steel, Raised Faced

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN80 (3" NB) ASA300 RF BLIND FLANGE SS 316
Outside diameter (O): 209.5mm
Flange thickness (C): 28.4mm
Pitch circle diameter (K): 168.1mm
Raised face height (RF): 1.5mm
Raised face diameter (R): 127.0mm
Number of bolt holes: 8
Material: Stainless Steel 316
Rating: ASA 300
Type: Blind flange (ASME B16.5)

Standards: ASME B16.5
Flange Face: Raised Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Blind Flange, Blank, ASA300, Stainless Steel, Raised Faced

Part of our Flanges and Flanged Connections Range
£ 367.57 367.57 GBP
DN80 (3" NB) ASA300 RF BOSSED SLIP ON FLANGE SS 304
Flange outside diameter: 209.5mm (O)
Flange thickness: 28.4mm (C)
Flange hub height: 42.9mm (Y)
Pitch Circle Diameter (PCD): 168.1mm (K)
Raised Face Height: 1.5mm (RF)
Bolt Holes: 8 off 22.3mm diameter
Bore Diameter: 90.6mm (B)
Material: Stainless Steel
Grade: 304
Standards: ASME B16.5
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Stainless Steel, Raised Faced, ASA 300LB, SOB

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN80 (3" NB) ASA300 RF BOSSED SLIP ON FLANGE SS 316
Flange outside diameter: 209.5mm (O)
Flange thickness: 28.4mm (C)
Flange hub height: 42.9mm (Y)
Pitch Circle Diameter (PCD): 168.1mm (K)
Raised Face Height: 1.5mm (RF)
Bolt Holes: 8 off 22.3mm diameter
Bore Diameter: 90.6mm (B)
Material: Stainless Steel
Grade: 316
Standards: ASME B16.5
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Stainless Steel, Raised Faced, ASA 300LB, SOB

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN80 (3" NB) ASA600 RF BOSSED SLIP ON FLANGE SS 304
Flange outside diameter: 209.5mm (O)
Flange thickness: 31.7mm (C)
Flange hub height: 45.9mm (Y)
Pitch Circle Diameter (PCD): 168.1mm (K)
Raised Face Height: 6.3mm (RF)
Bolt Holes: 8 off 22.3mm diameter
Bore Diameter: 90.6mm (B)
Material: Stainless Steel
Grade: 304
Standards: ASME B16.5
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Stainless Steel, Raised Faced, ASA 600LB, SOB

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN80 (3" NB) ASA600 RF BOSSED SLIP ON FLANGE SS 316
Flange outside diameter: 209.5mm (O)
Flange thickness: 31.7mm (C)
Flange hub height: 45.9mm (Y)
Pitch Circle Diameter (PCD): 168.1mm (K)
Raised Face Height: 6.3mm (RF)
Bolt Holes: 8 off 22.3mm diameter
Bore Diameter: 90.6mm (B)
Material: Stainless Steel
Grade: 316
Standards: ASME B16.5
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Stainless Steel, Raised Faced, ASA 600LB, SOB

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN80 (3" NB) BSP 150# (FXF) CONE SEAT UNION SS 316
Thread: 3" BSPP Female x Female
Suits an outside diameter (OD) of: 88.9mm
Material: Stainless
Grade: 316
£ 178.50 178.5 GBP
DN80 (3" NB) BSP 150# (FXF) ELBOW 45° SS 316
Thread: 3" BSPP Female x Female
Suits an outside diameter (OD) of: 88.9mm
Material: Stainless
Grade: 316
Elbow Angle: 45° (Degree)

Standards:
Nominal Bore, Threaded, Elbow, 45°, 45 Deg, Screwed, Low Pressure, 150 psi
£ 98.42 98.42 GBP
DN80 (3" NB) BSP 150# (FXF) ELBOW 90° SS 316
Thread: 3" BSPP Female x Female
Suits an outside diameter (OD) of: 88.9mm
Material: Stainless
Grade: 316
Elbow Angle: 90° (Degree)

Standards:
Nominal Bore, Threaded, Elbow, 90°, 90 Deg, Screwed, Low Pressure, 150 psi
£ 113.47 113.47 GBP
DN80 (3" NB) BSP 150# (MXF) ELBOW 90° SS 316
Side One Thread: 3" BSPT Male
Side Two Thread: 3" BSPP Female
Both Sides Suit an outside diameter (OD) of: 88.9mm
Male x Female Elbow, Also known as a 'Street Elbow '
Material: Stainless
Grade: 316

Standards:
Nominal Bore, Threaded, Screwed, Low Pressure, 150 psi
£ 164.92 164.92 GBP
DN80 (3" NB) BSP 150# BARREL NIPPLE SS 316
Thread: 3" BSPT Male x Male
Suits an outside diameter (OD) of: 88.9mm
Material: Stainless
Grade: 316
£ 53.76 53.76 GBP
DN80 (3" NB) BSP 150# EQUAL FULL SOCKET SS 316
Thread: 3" BSP Female x Female
Suits an outside diameter (OD) of: 88.9mm
Material: Stainless
Grade: 316
£ 70.49 70.49 GBP
DN80 (3" NB) BSP 150# EQUAL TEE SS 316
Thread: 3" BSPP Female x Female x Female
Suits an outside diameter of 88.9mm

Material: Stainless
Grade: 316

Standards:
Nominal Bore, Threaded, Equal, Tee, Tee Piece, Screwed, Low Pressure, 150 psi
£ 152.67 152.67 GBP
DN80 (3" NB) BSP 150# HALF SOCKET SS 316
Thread: 3" BSP Female x Female
Suits an outside diameter (OD) of: 88.9mm
Material: Stainless
Grade: 316
£ 37.94 37.94 GBP
DN80 (3" NB) BSP 150# HEX CAP SS 316
Thread: 3" BSPP Female
Suits an outside diameter (OD) of: 88.9mm
Material: Stainless
Grade: 316

Standards:
Nominal Bore, Threaded, Screwed, Low Pressure, 150 psi

Alternative terminology:
Female Cap, Termination, Blanking Cap, Cap End
£ 108.01 108.01 GBP
DN80 (3" NB) BSP 150# HEX HEAD PLUG SS 316
Thread: 3" BSPT Male
Suits an outside diameter (OD) of: 88.9mm
Material: Stainless
Grade: 316

Standards:
Nominal Bore, Threaded, Screwed, Low Pressure, 150 psi

Alternative terminology:
Male Plug, Termination, Blanking Plug, Stop end
£ 62.51 62.51 GBP
DN80 (3" NB) BSP 150# HEX NIPPLE SS 316
£ 61.18 61.18 GBP
DN80 (3" NB) BSP 150# ROUND CAP SS 316
Thread: 3" BSPP Female
Suits an outside diameter (OD) of: 88.9mm
Material: Stainless
Grade: 316

Standards:
Nominal Bore, Threaded, Screwed, Low Pressure, 150 psi

Alternative terminology:
Female Cap, Termination, Blanking Cap, Cap End
£ 71.40 71.4 GBP
DN80 (3" NB) BSP 150# SQUARE HEAD PLUG SS 316
Thread: 3" BSPT Male
Suits an outside diameter (OD) of: 88.9mm
Material: Stainless
Grade: 316

Standards:
Nominal Bore, Threaded, Screwed, Low Pressure, 150 psi

Alternative terminology:
Male Plug, Termination, Blanking Plug, Stop end
£ 62.51 62.51 GBP