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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

DN25 X DN15 (1" X ½" NB) SCHEDULE 40S A403 WELDED CONCENTRIC REDUCER SS 316
Outside Diameter (OD): 33 X 21mm
Wall Thickness: 3.38 X 2.77mm
Length: 51mm
£ 15.47 15.47 GBP
DN25 X DN15 (1" X ½" NB) SCHEDULE 40S A403 WELDED ECCENTRIC REDUCER SS 304
Outside Diameter (OD): 33 X 21mm
Wall Thickness: 3.38 X 2.77mm
Length: 51mm
£ 27.72 27.72 GBP
DN25 X DN15 (1" X ½" NB) SCHEDULE 40S A403 WELDED ECCENTRIC REDUCER SS 316
Outside Diameter (OD): 33 X 21mm
Wall Thickness: 3.38 X 2.77mm
Length: 51mm
£ 24.01 24.01 GBP
DN25 X DN20 (1" X ¾" NB) SCHEDULE 40S A403 SEAMLESS CONCENTRIC REDUCER SS 304
Outside Diameter (OD): 33 X 27mm
Wall Thickness: 3.38 X 2.87mm
Length: 51mm
Contact us for pricing 0.0 GBP
DN25 X DN20 (1" X ¾" NB) SCHEDULE 40S A403 SEAMLESS CONCENTRIC REDUCER SS 316
Outside Diameter (OD): 33 X 27mm
Wall Thickness: 3.38 X 2.87mm
Length: 51mm
Contact us for pricing 0.0 GBP
DN25 X DN20 (1" X ¾" NB) SCHEDULE 40S A403 SEAMLESS ECCENTRIC REDUCER SS 304
Outside Diameter (OD): 33 X 27mm
Wall Thickness: 3.38 X 2.87mm
Length: 51mm
Contact us for pricing 0.0 GBP
DN25 X DN20 (1" X ¾" NB) SCHEDULE 40S A403 SEAMLESS ECCENTRIC REDUCER SS 316
Outside Diameter (OD): 33 X 27mm
Wall Thickness: 3.38 X 2.87mm
Length: 51mm
Contact us for pricing 0.0 GBP
DN25 X DN20 (1" X ¾" NB) SCHEDULE 40S A403 WELDED CONCENTRIC REDUCER SS 304
Outside Diameter (OD): 33 X 27mm
Wall Thickness: 3.38 X 2.87mm
Length: 51mm
£ 10.99 10.99 GBP
DN25 X DN20 (1" X ¾" NB) SCHEDULE 40S A403 WELDED CONCENTRIC REDUCER SS 316
Outside Diameter (OD): 33 X 27mm
Wall Thickness: 3.38 X 2.87mm
Length: 51mm
£ 15.89 15.89 GBP
DN25 X DN20 (1" X ¾" NB) SCHEDULE 40S A403 WELDED ECCENTRIC REDUCER SS 304
Outside Diameter (OD): 33 X 27mm
Wall Thickness: 3.38 X 2.87mm
Length: 51mm
£ 21.98 21.98 GBP
DN25 X DN20 (1" X ¾" NB) SCHEDULE 40S A403 WELDED ECCENTRIC REDUCER SS 316
Outside Diameter (OD): 33 X 27mm
Wall Thickness: 3.38 X 2.87mm
Length: 51mm
£ 27.58 27.58 GBP
DN25 x DN20 (1 x 3/4" NB) SCHEDULE 10S A403 SEAMLESS REDUCING TEE SS 304
Outside Diameter (OD): 33 x 27mm
Wall Thickness (Run x Branch): 2.77 x 2.11mm
Centre to End (Run): 38mm
Centre to End (Branch): 38mm
Schedule: 10S
Weight: 0.19kg

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
DN25 x DN20 (1 x 3/4" NB) SCHEDULE 10S A403 SEAMLESS REDUCING TEE SS 316
Outside Diameter (OD): 33 x 27mm
Wall Thickness (Run x Branch): 2.77 x 2.11mm
Centre to End (Run): 38mm
Centre to End (Branch): 38mm
Schedule: 10S
Weight: 0.19kg

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
DN25 x DN20 (1 x 3/4" NB) SCHEDULE 10S A403 WELDED REDUCING TEE SS 304
Outside Diameter (OD): 33 x 27mm
Wall Thickness (Run x Branch): 2.77 x 2.11mm
Centre to End (Run): 38mm
Centre to End (Branch): 38mm
Schedule: 10S
Weight: 0.19kg

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
£ 36.68 36.68 GBP
DN25 x DN20 (1 x 3/4" NB) SCHEDULE 10S A403 WELDED REDUCING TEE SS 316
Outside Diameter (OD): 33 x 27mm
Wall Thickness (Run x Branch): 2.77 x 2.11mm
Centre to End (Run): 38mm
Centre to End (Branch): 38mm
Schedule: 10S
Weight: 0.19kg

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
£ 57.96 57.96 GBP
DN25 x DN20 (1 x 3/4" NB) SCHEDULE 40S A403 SEAMLESS REDUCING TEE SS 304
Outside Diameter (OD): 33 x 27mm
Wall Thickness (Run x Branch): 3.38 x 2.87mm
Centre to End (Run): 38mm
Centre to End (Branch): 38mm
Schedule: 40s
Weight: 0.34kg

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
DN25 x DN20 (1 x 3/4" NB) SCHEDULE 40S A403 SEAMLESS REDUCING TEE SS 316
Outside Diameter (OD): 33 x 27mm
Wall Thickness (Run x Branch): 3.38 x 2.87mm
Centre to End (Run): 38mm
Centre to End (Branch): 38mm
Schedule: 40s
Weight: 0.34kg

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
DN25 x DN20 (1 x 3/4" NB) SCHEDULE 40S A403 WELDED REDUCING TEE SS 304
Outside Diameter (OD): 33 x 27mm
Wall Thickness (Run x Branch): 3.38 x 2.87mm
Centre to End (Run): 38mm
Centre to End (Branch): 38mm
Schedule: 40s
Weight: 0.34kg

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
£ 28.84 28.84 GBP
DN25 x DN20 (1 x 3/4" NB) SCHEDULE 40S A403 WELDED REDUCING TEE SS 316
Outside Diameter (OD): 33 x 27mm
Wall Thickness (Run x Branch): 3.38 x 2.87mm
Centre to End (Run): 38mm
Centre to End (Branch): 38mm
Schedule: 40s
Weight: 0.34kg

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
£ 51.38 51.38 GBP
DN25x15 (1" x 1/2" NB) BSP 150# REDUCING TEE SS 316
Thread: 1" BSPP Female x Female, 1/2" BSPP Female Branch
Suits main run OD 33.4mm, 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
DN25x20 (1" x 3/4" NB) BSP 150# REDUCING TEE SS 316
Thread: 1" BSPP Female x Female, 3/4" BSPP Female Branch
Suits main run OD 33.4mm, branch OD 26.7mm

Material: Stainless
Grade: 316

Standards:
Nominal Bore, Threaded, Reducing Tee, Tee Piece, Screwed, Low Pressure, 150 psi
£ 23.17 23.17 GBP
DN32 (1 1/4" NB) PN10/PN16/PN25/PN40 RF BSPP THREADED FLANGE SS 304
Flange outside diameter: 140mm (D)
Flange thickness: 18mm (C2)
Pitch Circle Diameter (PCD): 100mm (K)
Flange hub height: 30mm (H1)
Raised Face Height: 2mm (f1)
BSPP Thread: 1 1/4"
Bolt Holes: 4 off M16 bolts
Material: Stainless Steel
Grade: 304

Standards: EN 1092-1
Pressure Rating: PN16
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Threaded Flange, Screwed Flange, BSPP, Stainless Steel, SS Steel, Bossed, PN16

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN32 (1 1/4" NB) PN10/PN16/PN25/PN40 RF BSPP THREADED FLANGE SS 316
Flange outside diameter: 140mm (D)
Flange thickness: 18mm (C2)
Pitch Circle Diameter (PCD): 100mm (K)
Flange hub height: 30mm (H1)
Raised Face Height: 2mm (f1)
BSPP Thread: 1 1/4"
Bolt Holes: 4 off M16 bolts
Material: Stainless Steel
Grade: 316

Standards: EN 1092-1
Pressure Rating: PN16
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Threaded Flange, Screwed Flange, BSPP, Stainless Steel, SS Steel, Bossed, PN16

Part of our Flanges and Flanged Connections Range
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DN32 (1 1/4" NB) PN6 RF BSPP THREADED FLANGE SS 304
Flange outside diameter: 120mm (D)
Flange thickness: 14mm (C2)
Pitch Circle Diameter (PCD): 90mm (K)
Flange hub height: 26mm (H1)
Raised Face Height: 2mm (f1)
BSPP Thread: 1 1/4"
Bolt Holes: 4 off M12 bolts
Material: Stainless Steel
Grade: 304

Standards: EN 1092-1
Pressure Rating: PN6
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Threaded Flange, Screwed Flange, BSPP, Stainless Steel, SS Steel, Bossed, PN6

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN32 (1 1/4" NB) PN6 RF BSPP THREADED FLANGE SS 316
Flange outside diameter: 120mm (D)
Flange thickness: 14mm (C2)
Pitch Circle Diameter (PCD): 90mm (K)
Flange hub height: 26mm (H1)
Raised Face Height: 2mm (f1)
BSPP Thread: 1 1/4"
Bolt Holes: 4 off M12 bolts
Material: Stainless Steel
Grade: 316

Standards: EN 1092-1
Pressure Rating: PN6
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Threaded Flange, Screwed Flange, BSPP, Stainless Steel, SS Steel, Bossed, PN6

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN32 (1"1/4 NB) SCHEDULE 10S ASA300 WELD NECK FLANGE SS 304
Outside diameter (O): 133.3mm
Flange thickness (C): 19.0mm
Hub height (X): 63.5mm
Length through hub (A): 42.1mm
Bolt circle diameter (K): 98.5mm
Overall height (Y): 65.0mm
Raised face thickness (RF): 1.5mm
Bore (B): 63.5mm
Number of bolt holes: 4
Bolt hole diameter: 19.0mm
Approx. weight: 2.6kg

Part of our Flanges and Flanged Connections Range
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DN32 (1"1/4 NB) SCHEDULE 10S ASA300 WELD NECK FLANGE SS 316
Outside diameter (O): 133.3mm
Flange thickness (C): 19.0mm
Hub height (X): 63.5mm
Length through hub (A): 42.1mm
Bolt circle diameter (K): 98.5mm
Overall height (Y): 65.0mm
Raised face thickness (RF): 1.5mm
Bore (B): 63.5mm
Number of bolt holes: 4
Bolt hole diameter: 19.0mm
Approx. weight: 2.6kg

Part of our Flanges and Flanged Connections Range
£ 187.95 187.95 GBP
DN32 (1"1/4 NB) SCHEDULE 40S ASA300 WELD NECK FLANGE SS 304
Outside diameter (O): 133.3mm
Flange thickness (C): 19.0mm
Hub height (X): 63.5mm
Length through hub (A): 42.1mm
Bolt circle diameter (K): 98.5mm
Overall height (Y): 65.0mm
Raised face thickness (RF): 1.5mm
Bore (B): 63.5mm
Number of bolt holes: 4
Bolt hole diameter: 19.0mm
Approx. weight: 2.6kg

Part of our Flanges and Flanged Connections Range
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DN32 (1"1/4 NB) SCHEDULE 40S ASA300 WELD NECK FLANGE SS 316
Outside diameter (O): 133.3mm
Flange thickness (C): 19.0mm
Hub height (X): 63.5mm
Length through hub (A): 42.1mm
Bolt circle diameter (K): 98.5mm
Overall height (Y): 65.0mm
Raised face thickness (RF): 1.5mm
Bore (B): 63.5mm
Number of bolt holes: 4
Bolt hole diameter: 19.0mm
Approx. weight: 2.6kg

Part of our Flanges and Flanged Connections Range
£ 148.05 148.05 GBP
DN32 (1"1/4 NB) SCHEDULE 80S ASA300 WELD NECK FLANGE SS 304
Outside diameter (O): 133.3mm
Flange thickness (C): 19.0mm
Hub height (X): 63.5mm
Length through hub (A): 42.1mm
Bolt circle diameter (K): 98.5mm
Overall height (Y): 65.0mm
Raised face thickness (RF): 1.5mm
Bore (B): 63.5mm
Number of bolt holes: 4
Bolt hole diameter: 19.0mm
Approx. weight: 2.6kg

Part of our Flanges and Flanged Connections Range
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DN32 (1"1/4 NB) SCHEDULE 80S ASA300 WELD NECK FLANGE SS 316
Outside diameter (O): 133.3mm
Flange thickness (C): 19.0mm
Hub height (X): 63.5mm
Length through hub (A): 42.1mm
Bolt circle diameter (K): 98.5mm
Overall height (Y): 65.0mm
Raised face thickness (RF): 1.5mm
Bore (B): 63.5mm
Number of bolt holes: 4
Bolt hole diameter: 19.0mm
Approx. weight: 2.6kg

Part of our Flanges and Flanged Connections Range
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DN32 (1.1/2" NB) U-BOLT C.W NUTS SS 304 (A2)
Suits an outside diameter (OD) of: 48.3mm
Material: Stainless Steel 304 (A2)
Thread: M10
Comes with 2x Nuts
Contact us for pricing 0.0 GBP
DN32 (1.1/2" NB) U-BOLT C.W NUTS SS 316 (A4)
Suits an outside diameter (OD) of: 48.3mm
Material: Stainless Steel 316 (A4)
Thread: M10
Comes with 2x Nuts
Contact us for pricing 0.0 GBP
DN32 (1.1/4" NB) ASA150 FLANGED 2PC LEVER OP. BALL VALVE LEVER OP SS 316
Flanged both ends: 1.1/4" ASA 150
Suits an outside diameter (OD) of: 42.4mm
PCD: 88.9mm Ø (ANSI 150)
Face to face: 140mm
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
£ 419.44 419.44 GBP
DN32 (1.1/4" NB) ASA150 RF BLIND FLANGE SS 304
Outside diameter (O): 117.3mm
Flange thickness (C): 15.7mm
Pitch circle diameter (K): 88.9mm
Raised face height (RF): 1.5mm
Raised face diameter (R): 63.5mm
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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DN32 (1.1/4" NB) ASA150 RF BLIND FLANGE SS 316
Outside diameter (O): 117.3mm
Flange thickness (C): 15.7mm
Pitch circle diameter (K): 88.9mm
Raised face height (RF): 1.5mm
Raised face diameter (R): 63.5mm
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
£ 75.04 75.04 GBP
DN32 (1.1/4" NB) ASA150 RF BOSSED SLIP ON FLANGE SS 304
Flange outside diameter: 117.3mm (O)
Flange thickness: 15.7mm (C)
Flange hub height: 20.5mm (Y)
Pitch Circle Diameter (PCD): 88.9mm (K)
Raised Face Height: 1.5mm (RF)
Bolt Holes: 4 off 15.7mm diameter
Bore Diameter: 43.1mm (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
DN32 (1.1/4" NB) ASA150 RF BOSSED SLIP ON FLANGE SS 316
Flange outside diameter: 117.3mm (O)
Flange thickness: 15.7mm (C)
Flange hub height: 20.5mm (Y)
Pitch Circle Diameter (PCD): 88.9mm (K)
Raised Face Height: 1.5mm (RF)
Bolt Holes: 4 off 15.7mm diameter
Bore Diameter: 43.1mm (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
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DN32 (1.1/4" NB) ASA1500 RF BOSSED SLIP ON FLANGE SS 304
Flange outside diameter: 158.7mm (O)
Flange thickness: 28.4mm (C)
Flange hub height: 41.1mm (Y)
Pitch Circle Diameter (PCD): 111.2mm (K)
Raised Face Height: 6.3mm (RF)
Bolt Holes: 4 off 25.4mm diameter
Bore Diameter: 43.1mm (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
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DN32 (1.1/4" NB) ASA1500 RF BOSSED SLIP ON FLANGE SS 316
Flange outside diameter: 158.7mm (O)
Flange thickness: 28.4mm (C)
Flange hub height: 41.1mm (Y)
Pitch Circle Diameter (PCD): 111.2mm (K)
Raised Face Height: 6.3mm (RF)
Bolt Holes: 4 off 25.4mm diameter
Bore Diameter: 43.1mm (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