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Stainless

Nominal Bore Stainless Steel Pipework – 304 & 316 Grades

Integraflow offers a complete range of nominal bore stainless steel pipework systems in 304 and 316/L grades, including pipe, fittings, flanges, valves, and supports in welded, seamless, and threaded configurations, designed for durability, corrosion resistance, and compatibility across industrial, hygienic, and mechanical applications.

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Stainless

DN20 X 8 (3/4" X 1/4" NB) NPT 150# REDUCING HEX NIPPLE SS 316
Side One Thread: 3/4" NPT Male
Suits an outside diameter (OD) of: 26.9mm
Side Two Thread: 1/4" NPT Male
Suits an outside diameter (OD) of: 13.72mm
Material: Stainless
Grade: 316
£ 12.04 12.04 GBP
DN20 X DN15 (¾" X ½" NB) SCHEDULE 40S A403 SEAMLESS CONCENTRIC REDUCER SS 304
Outside Diameter (OD): 27 X 21mm
Wall Thickness: 2.87 X 2.77mm
Length: 38mm
Contact us for pricing 0.0 GBP
DN20 X DN15 (¾" X ½" NB) SCHEDULE 40S A403 SEAMLESS CONCENTRIC REDUCER SS 316
Outside Diameter (OD): 27 X 21mm
Wall Thickness: 2.87 X 2.77mm
Length: 38mm
Contact us for pricing 0.0 GBP
DN20 X DN15 (¾" X ½" NB) SCHEDULE 40S A403 SEAMLESS ECCENTRIC REDUCER SS 304
Outside Diameter (OD): 27 X 21mm
Wall Thickness: 2.87 X 2.77mm
Length: 38mm
Contact us for pricing 0.0 GBP
DN20 X DN15 (¾" X ½" NB) SCHEDULE 40S A403 SEAMLESS ECCENTRIC REDUCER SS 316
Outside Diameter (OD): 27 X 21mm
Wall Thickness: 2.87 X 2.77mm
Length: 38mm
Contact us for pricing 0.0 GBP
DN20 X DN15 (¾" X ½" NB) SCHEDULE 40S A403 WELDED CONCENTRIC REDUCER SS 304
Outside Diameter (OD): 27 X 21mm
Wall Thickness: 2.87 X 2.77mm
Length: 38mm
£ 11.90 11.9 GBP
DN20 X DN15 (¾" X ½" NB) SCHEDULE 40S A403 WELDED CONCENTRIC REDUCER SS 316
Outside Diameter (OD): 27 X 21mm
Wall Thickness: 2.87 X 2.77mm
Length: 38mm
£ 13.65 13.65 GBP
DN20 X DN15 (¾" X ½" NB) SCHEDULE 40S A403 WELDED ECCENTRIC REDUCER SS 304
Outside Diameter (OD): 27 X 21mm
Wall Thickness: 2.87 X 2.77mm
Length: 38mm
£ 17.57 17.57 GBP
DN20 X DN15 (¾" X ½" NB) SCHEDULE 40S A403 WELDED ECCENTRIC REDUCER SS 316
Outside Diameter (OD): 27 X 21mm
Wall Thickness: 2.87 X 2.77mm
Length: 38mm
£ 16.52 16.52 GBP
DN20 x DN15 (3/4 x 1/2" NB) SCHEDULE 10S A403 SEAMLESS REDUCING TEE SS 304
Outside Diameter (OD): 27 x 21mm
Wall Thickness (Run x Branch): 2.11 x 2.11mm
Centre to End (Run): 29mm
Centre to End (Branch): 29mm
Schedule: 10S
Weight: 0.11kg

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
DN20 x DN15 (3/4 x 1/2" NB) SCHEDULE 10S A403 SEAMLESS REDUCING TEE SS 316
Outside Diameter (OD): 27 x 21mm
Wall Thickness (Run x Branch): 2.11 x 2.11mm
Centre to End (Run): 29mm
Centre to End (Branch): 29mm
Schedule: 10S
Weight: 0.11kg

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
DN20 x DN15 (3/4 x 1/2" NB) SCHEDULE 10S A403 WELDED REDUCING TEE SS 304
Outside Diameter (OD): 27 x 21mm
Wall Thickness (Run x Branch): 2.11 x 2.11mm
Centre to End (Run): 29mm
Centre to End (Branch): 29mm
Schedule: 10S
Weight: 0.11kg

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
£ 24.92 24.92 GBP
DN20 x DN15 (3/4 x 1/2" NB) SCHEDULE 10S A403 WELDED REDUCING TEE SS 316
Outside Diameter (OD): 27 x 21mm
Wall Thickness (Run x Branch): 2.11 x 2.11mm
Centre to End (Run): 29mm
Centre to End (Branch): 29mm
Schedule: 10S
Weight: 0.11kg

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
£ 34.93 34.93 GBP
DN20 x DN15 (3/4 x 1/2" NB) SCHEDULE 40S A403 SEAMLESS REDUCING TEE SS 304
Outside Diameter (OD): 27 x 21mm
Wall Thickness (Run x Branch): 2.87 x 2.77mm
Centre to End (Run): 29mm
Centre to End (Branch): 29mm
Schedule: 40s
Weight: 0.27kg

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
DN20 x DN15 (3/4 x 1/2" NB) SCHEDULE 40S A403 SEAMLESS REDUCING TEE SS 316
Outside Diameter (OD): 27 x 21mm
Wall Thickness (Run x Branch): 2.87 x 2.77mm
Centre to End (Run): 29mm
Centre to End (Branch): 29mm
Schedule: 40s
Weight: 0.27kg

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
DN20 x DN15 (3/4 x 1/2" NB) SCHEDULE 40S A403 WELDED REDUCING TEE SS 304
Outside Diameter (OD): 27 x 21mm
Wall Thickness (Run x Branch): 2.87 x 2.77mm
Centre to End (Run): 29mm
Centre to End (Branch): 29mm
Schedule: 40s
Weight: 0.27kg

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
£ 28.07 28.07 GBP
DN20 x DN15 (3/4 x 1/2" NB) SCHEDULE 40S A403 WELDED REDUCING TEE SS 316
Outside Diameter (OD): 27 x 21mm
Wall Thickness (Run x Branch): 2.87 x 2.77mm
Centre to End (Run): 29mm
Centre to End (Branch): 29mm
Schedule: 40s
Weight: 0.27kg

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
£ 40.88 40.88 GBP
DN20x10 (3/4" x 3/8" NB) BSP 150# REDUCING TEE SS 316
Thread: 3/4" BSPP Female x Female, 3/8" BSPP Female Branch
Suits main run OD 26.7mm, branch OD 17.1mm

Material: Stainless
Grade: 316

Standards:
Nominal Bore, Threaded, Reducing Tee, Tee Piece, Screwed, Low Pressure, 150 psi
£ 14.35 14.35 GBP
DN20x15 (3/4" x 1/2" NB) BSP 150# REDUCING TEE SS 316
Thread: 3/4" BSPP Female x Female, 1/2" BSPP Female Branch
Suits main run OD 26.7mm, branch OD 21.3mm

Material: Stainless
Grade: 316

Standards:
Nominal Bore, Threaded, Reducing Tee, Tee Piece, Screwed, Low Pressure, 150 psi
£ 14.63 14.63 GBP
DN25 (1 NB) SCHEDULE 10S ASA300 WELD NECK FLANGE SS 304
Outside diameter (O): 123.9mm
Flange thickness (C): 17.5mm
Hub height (X): 53.8mm
Length through hub (A): 33.5mm
Bolt circle diameter (K): 88.9mm
Overall height (Y): 61.9mm
Raised face thickness (RF): 1.5mm
Bore (B): 50.8mm
Number of bolt holes: 4
Bolt hole diameter: 19.0mm
Approx. weight: 1.9kg

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN25 (1 NB) SCHEDULE 10S ASA300 WELD NECK FLANGE SS 316
Outside diameter (O): 123.9mm
Flange thickness (C): 17.5mm
Hub height (X): 53.8mm
Length through hub (A): 33.5mm
Bolt circle diameter (K): 88.9mm
Overall height (Y): 61.9mm
Raised face thickness (RF): 1.5mm
Bore (B): 50.8mm
Number of bolt holes: 4
Bolt hole diameter: 19.0mm
Approx. weight: 1.9kg

Part of our Flanges and Flanged Connections Range
£ 148.47 148.47 GBP
DN25 (1 NB) SCHEDULE 40S ASA300 WELD NECK FLANGE SS 304
Outside diameter (O): 123.9mm
Flange thickness (C): 17.5mm
Hub height (X): 53.8mm
Length through hub (A): 33.5mm
Bolt circle diameter (K): 88.9mm
Overall height (Y): 61.9mm
Raised face thickness (RF): 1.5mm
Bore (B): 50.8mm
Number of bolt holes: 4
Bolt hole diameter: 19.0mm
Approx. weight: 1.9kg

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN25 (1 NB) SCHEDULE 40S ASA300 WELD NECK FLANGE SS 316
Outside diameter (O): 123.9mm
Flange thickness (C): 17.5mm
Hub height (X): 53.8mm
Length through hub (A): 33.5mm
Bolt circle diameter (K): 88.9mm
Overall height (Y): 61.9mm
Raised face thickness (RF): 1.5mm
Bore (B): 50.8mm
Number of bolt holes: 4
Bolt hole diameter: 19.0mm
Approx. weight: 1.9kg

Part of our Flanges and Flanged Connections Range
£ 108.92 108.92 GBP
DN25 (1 NB) SCHEDULE 80S ASA300 WELD NECK FLANGE SS 304
Outside diameter (O): 123.9mm
Flange thickness (C): 17.5mm
Hub height (X): 53.8mm
Length through hub (A): 33.5mm
Bolt circle diameter (K): 88.9mm
Overall height (Y): 61.9mm
Raised face thickness (RF): 1.5mm
Bore (B): 50.8mm
Number of bolt holes: 4
Bolt hole diameter: 19.0mm
Approx. weight: 1.9kg

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN25 (1 NB) SCHEDULE 80S ASA300 WELD NECK FLANGE SS 316
Outside diameter (O): 123.9mm
Flange thickness (C): 17.5mm
Hub height (X): 53.8mm
Length through hub (A): 33.5mm
Bolt circle diameter (K): 88.9mm
Overall height (Y): 61.9mm
Raised face thickness (RF): 1.5mm
Bore (B): 50.8mm
Number of bolt holes: 4
Bolt hole diameter: 19.0mm
Approx. weight: 1.9kg

Part of our Flanges and Flanged Connections Range
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DN25 (1" NB) 150# (MXF) ELBOW 90° SS 316
Side One Thread: 1" NPT Male
Side Two Thread: 1" NPT Female
Both Sides Suit an outside diameter (OD) of: 33.4mm
Male x Female Elbow, Also known as a 'Street Elbow '
Material: Stainless
Grade: 316

Standards:
Nominal Bore, Threaded, Screwed, Low Pressure, 150 psi
£ 26.25 26.25 GBP
DN25 (1" NB) 150# (MXF) ELBOW 90° SS 316
Side One Thread: 1" BSPT Male
Side Two Thread: 1" BSPP Female
Both Sides Suit an outside diameter (OD) of: 33.4mm
Male x Female Elbow, Also known as a 'Street Elbow '
Material: Stainless
Grade: 316

Standards:
Nominal Bore, Threaded, Screwed, Low Pressure, 150 psi
£ 15.96 15.96 GBP
DN25 (1" NB) 150# HEX CAP END SS 316
Thread: 1" BSPP Female
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316

Standards:
Nominal Bore, Threaded, Screwed, Low Pressure, 150 psi
£ 11.34 11.34 GBP
DN25 (1" NB) 150# HEX HEAD PLUG SS 316
Thread: 1" BSPT Male
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316

Standards:
Nominal Bore, Threaded, Screwed, Low Pressure, 150 psi
£ 8.75 8.75 GBP
DN25 (1" NB) 150# HEX NIPPLE SS 316
Thread: 1" BSPT Male x Male
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316

Standards:
Nominal Bore, Threaded, Screwed, Low Pressure, 150 psi
£ 9.87 9.87 GBP
DN25 (1" NB) 150# MALE X 1" HOSETAIL SS 316
Side One Thread: 1" BSPT Male
Side One Suits an outside diameter (OD) of: 33.4mm
Side Two Hose Tail: 1" Serration
Side Two Suits Hose inside Diameter (ID)of: 25.4mm
Material: Stainless
Grade: 316

Standards:
Nominal Bore, Threaded, Screwed, Hose, Low Pressure, 150 psi
£ 18.20 18.2 GBP
DN25 (1" NB) 150# SQUARE HEAD PLUG SS 316
Thread: 1" BSPT Male
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316

Standards:
Nominal Bore, Threaded, Screwed, Low Pressure, 150 psi
£ 8.75 8.75 GBP
DN25 (1" NB) 150# WELD NIPPLE SS 316
Side One Thread: 1" BSPT Male
Side One Suits an outside diameter (OD) of: 33.4mm
Side Two Plain: 1" Buttweld
Side Two Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316

Standards:
Nominal Bore, Threaded, Screwed, Low Pressure, 150 psi
£ 6.65 6.65 GBP
DN25 (1" NB) ASA150 FLANGED 2PC LEVER OP. BALL VALVE LEVER OP SS 316
Flanged both ends: 1" ANSI 150
Suits an outside diameter (OD) of: 33.4mm
PCD: 79.4mm Ø (ASA 150)
Face to face: 127mm
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
£ 325.22 325.22 GBP
DN25 (1" NB) ASA150 RF BLANK FLANGE SS 304
Blanking / Blind Flange
Material: Stainless
Grade: 304
Standards: ASME B16.9 / ASA150
Flange Face: Raised
Bolt Holes: 4 off to suit 1/2"⌀ or M12 Bolts
PCD: 79.4mm
Flange Diameter: 107.9mm
Flange Thickness: 17.5mm
Certification Available: 3.1 BS EN 10204 Material Certification

Part of our Flanges and Flanged Connections Range
£ 33.60 33.6 GBP
DN25 (1" NB) ASA150 RF BLIND FLANGE SS 304
Outside diameter (O): 107.9mm
Flange thickness (C): 14.2mm
Pitch circle diameter (K): 79.2mm
Raised face height (RF): 1.5mm
Raised face diameter (R): 50.8mm
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
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DN25 (1" NB) ASA150 RF BLIND FLANGE SS 316
Outside diameter (O): 107.9mm
Flange thickness (C): 14.2mm
Pitch circle diameter (K): 79.2mm
Raised face height (RF): 1.5mm
Raised face diameter (R): 50.8mm
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
£ 47.18 47.18 GBP
DN25 (1" NB) ASA150 RF BOSSED SLIP ON FLANGE SS 304
Flange outside diameter: 107.9mm (O)
Flange thickness: 14.2mm (C)
Flange hub height: 17.5mm (Y)
Pitch Circle Diameter (PCD): 79.2mm (K)
Raised Face Height: 1.5mm (RF)
Bolt Holes: 4 off 15.7mm diameter
Bore Diameter: 34.5mm (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
DN25 (1" NB) ASA150 RF BOSSED SLIP ON FLANGE SS 316
Flange outside diameter: 107.9mm (O)
Flange thickness: 14.2mm (C)
Flange hub height: 17.5mm (Y)
Pitch Circle Diameter (PCD): 79.2mm (K)
Raised Face Height: 1.5mm (RF)
Bolt Holes: 4 off 15.7mm diameter
Bore Diameter: 34.5mm (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
DN25 (1" NB) ASA1500 RF BOSSED SLIP ON FLANGE SS 304
Flange outside diameter: 149.3mm (O)
Flange thickness: 28.4mm (C)
Flange hub height: 41.1mm (Y)
Pitch Circle Diameter (PCD): 101.6mm (K)
Raised Face Height: 6.3mm (RF)
Bolt Holes: 4 off 25.4mm diameter
Bore Diameter: 34.5mm (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