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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

DN250 X DN150 (10" X 6" NB) SCHEDULE 40S A403 WELDED CONCENTRIC REDUCER SS 304
Outside Diameter (OD): 273 X 168mm
Wall Thickness: 9.27 X 7.11mm
Length: 178mm
£ 702.87 702.87 GBP
DN250 X DN150 (10" X 6" NB) SCHEDULE 40S A403 WELDED CONCENTRIC REDUCER SS 316
Outside Diameter (OD): 273 X 168mm
Wall Thickness: 9.27 X 7.11mm
Length: 178mm
£ 835.10 835.1 GBP
DN250 X DN150 (10" X 6" NB) SCHEDULE 40S A403 WELDED ECCENTRIC REDUCER SS 304
Outside Diameter (OD): 273 X 168mm
Wall Thickness: 9.27 X 7.11mm
Length: 178mm
£ 894.67 894.67 GBP
DN250 X DN150 (10" X 6" NB) SCHEDULE 40S A403 WELDED ECCENTRIC REDUCER SS 316
Outside Diameter (OD): 273 X 168mm
Wall Thickness: 9.27 X 7.11mm
Length: 178mm
£ 1,251.81 1251.81 GBP
DN250 X DN200 (10" X 8" NB) SCHEDULE 40S A403 SEAMLESS CONCENTRIC REDUCER SS 304
Outside Diameter (OD): 273 X 219mm
Wall Thickness: 9.27 X 8.18mm
Length: 178mm
Contact us for pricing 0.0 GBP
DN250 X DN200 (10" X 8" NB) SCHEDULE 40S A403 SEAMLESS CONCENTRIC REDUCER SS 316
Outside Diameter (OD): 273 X 219mm
Wall Thickness: 9.27 X 8.18mm
Length: 178mm
Contact us for pricing 0.0 GBP
DN250 X DN200 (10" X 8" NB) SCHEDULE 40S A403 SEAMLESS ECCENTRIC REDUCER SS 304
Outside Diameter (OD): 273 X 219mm
Wall Thickness: 9.27 X 8.18mm
Length: 178mm
Contact us for pricing 0.0 GBP
DN250 X DN200 (10" X 8" NB) SCHEDULE 40S A403 SEAMLESS ECCENTRIC REDUCER SS 316
Outside Diameter (OD): 273 X 219mm
Wall Thickness: 9.27 X 8.18mm
Length: 178mm
Contact us for pricing 0.0 GBP
DN250 X DN200 (10" X 8" NB) SCHEDULE 40S A403 WELDED CONCENTRIC REDUCER SS 304
Outside Diameter (OD): 273 X 219mm
Wall Thickness: 9.27 X 8.18mm
Length: 178mm
£ 646.87 646.87 GBP
DN250 X DN200 (10" X 8" NB) SCHEDULE 40S A403 WELDED CONCENTRIC REDUCER SS 316
Outside Diameter (OD): 273 X 219mm
Wall Thickness: 9.27 X 8.18mm
Length: 178mm
£ 743.26 743.26 GBP
DN250 X DN200 (10" X 8" NB) SCHEDULE 40S A403 WELDED ECCENTRIC REDUCER SS 304
Outside Diameter (OD): 273 X 219mm
Wall Thickness: 9.27 X 8.18mm
Length: 178mm
£ 753.34 753.34 GBP
DN250 X DN200 (10" X 8" NB) SCHEDULE 40S A403 WELDED ECCENTRIC REDUCER SS 316
Outside Diameter (OD): 273 X 219mm
Wall Thickness: 9.27 X 8.18mm
Length: 178mm
£ 812.00 812.0 GBP
DN250 x DN200 (10 x 8" NB) SCHEDULE 10S A403 SEAMLESS REDUCING TEE SS 304
Outside Diameter (OD): 273 x 219mm
Wall Thickness (Run x Branch): 4.19 x 3.76mm
Centre to End (Run): 216mm
Centre to End (Branch): 203mm
Schedule: 10S
Weight: 16.70kg

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
DN250 x DN200 (10 x 8" NB) SCHEDULE 10S A403 SEAMLESS REDUCING TEE SS 316
Outside Diameter (OD): 273 x 219mm
Wall Thickness (Run x Branch): 4.19 x 3.76mm
Centre to End (Run): 216mm
Centre to End (Branch): 203mm
Schedule: 10S
Weight: 16.70kg

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
DN250 x DN200 (10 x 8" NB) SCHEDULE 10S A403 WELDED REDUCING TEE SS 304
Outside Diameter (OD): 273 x 219mm
Wall Thickness (Run x Branch): 4.19 x 3.76mm
Centre to End (Run): 216mm
Centre to End (Branch): 203mm
Schedule: 10S
Weight: 16.70kg

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
£ 1,712.55 1712.55 GBP
DN250 x DN200 (10 x 8" NB) SCHEDULE 10S A403 WELDED REDUCING TEE SS 316
Outside Diameter (OD): 273 x 219mm
Wall Thickness (Run x Branch): 4.19 x 3.76mm
Centre to End (Run): 216mm
Centre to End (Branch): 203mm
Schedule: 10S
Weight: 16.70kg

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
£ 1,304.66 1304.66 GBP
DN250 x DN200 (10 x 8" NB) SCHEDULE 40S A403 SEAMLESS REDUCING TEE SS 304
Outside Diameter (OD): 273 x 219mm
Wall Thickness (Run x Branch): 9.27 x 8.18mm
Centre to End (Run): 216mm
Centre to End (Branch): 203mm
Schedule: 40s
Weight: 39.63kg

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
DN250 x DN200 (10 x 8" NB) SCHEDULE 40S A403 SEAMLESS REDUCING TEE SS 316
Outside Diameter (OD): 273 x 219mm
Wall Thickness (Run x Branch): 9.27 x 8.18mm
Centre to End (Run): 216mm
Centre to End (Branch): 203mm
Schedule: 40s
Weight: 39.63kg

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
DN250 x DN200 (10 x 8" NB) SCHEDULE 40S A403 WELDED REDUCING TEE SS 304
Outside Diameter (OD): 273 x 219mm
Wall Thickness (Run x Branch): 9.27 x 8.18mm
Centre to End (Run): 216mm
Centre to End (Branch): 203mm
Schedule: 40s
Weight: 39.63kg

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
£ 3,394.93 3394.93 GBP
DN250 x DN200 (10 x 8" NB) SCHEDULE 40S A403 WELDED REDUCING TEE SS 316
Outside Diameter (OD): 273 x 219mm
Wall Thickness (Run x Branch): 9.27 x 8.18mm
Centre to End (Run): 216mm
Centre to End (Branch): 203mm
Schedule: 40s
Weight: 39.63kg

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
£ 3,615.15 3615.15 GBP
DN250(10" NB) PN16 RF BLIND FLANGE SS 304
Flange OD (D): 405mm
Drilling (No. x Bolt Hole x L): 12 x M24 x 26mm
Pitch circle diameter (K): 355mm
Flange thickness (C1): 29mm
Raised face diameter (D1): 312mm
Raised face height (F1): 4mm
Material: 304
Rating: PN16
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
£ 879.55 879.55 GBP
DN250(10" NB) PN16 RF BLIND FLANGE SS 316
Flange OD (D): 405mm
Drilling (No. x Bolt Hole x L): 12 x M24 x 26mm
Pitch circle diameter (K): 355mm
Flange thickness (C1): 29mm
Raised face diameter (D1): 312mm
Raised face height (F1): 4mm
Material: 316
Rating: PN16
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
£ 1,327.62 1327.62 GBP
DN300 (12 NB) SCHEDULE 80S ASA300 WELD NECK FLANGE SS 304
Outside diameter (O): 520.7mm
Flange thickness (C): 50.8mm
Hub height (X): 374.6mm
Length through hub (A): 323.8mm
Bolt circle diameter (K): 406.4mm
Overall height (Y): 130.0mm
Raised face thickness (RF): 1.5mm
Bore (B): 381.0mm
Number of bolt holes: 16
Bolt hole diameter: 31.7mm
Approx. weight: 64.0kg

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN300 (12" NB) ASA150 RF BLIND FLANGE SS 304
Outside diameter (O): 482.6mm
Flange thickness (C): 31.7mm
Pitch circle diameter (K): 431.8mm
Raised face height (RF): 1.5mm
Raised face diameter (R): 381.0mm
Number of bolt holes: 12
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
Contact us for pricing 0.0 GBP
DN300 (12" NB) ASA150 RF BLIND FLANGE SS 316
Outside diameter (O): 482.6mm
Flange thickness (C): 31.7mm
Pitch circle diameter (K): 431.8mm
Raised face height (RF): 1.5mm
Raised face diameter (R): 381.0mm
Number of bolt holes: 12
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
£ 2,642.64 2642.64 GBP
DN300 (12" NB) ASA150 RF BOSSED SLIP ON FLANGE SS 304
Flange outside diameter: 482.6mm (O)
Flange thickness: 31.7mm (C)
Flange hub height: 55.6mm (Y)
Pitch Circle Diameter (PCD): 431.8mm (K)
Raised Face Height: 1.5mm (RF)
Bolt Holes: 12 off 25.4mm diameter
Bore Diameter: 327.1mm (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
DN300 (12" NB) ASA150 RF BOSSED SLIP ON FLANGE SS 316
Flange outside diameter: 482.6mm (O)
Flange thickness: 31.7mm (C)
Flange hub height: 55.6mm (Y)
Pitch Circle Diameter (PCD): 431.8mm (K)
Raised Face Height: 1.5mm (RF)
Bolt Holes: 12 off 25.4mm diameter
Bore Diameter: 327.1mm (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
Contact us for pricing 0.0 GBP
DN300 (12" NB) ASA1500 RF BOSSED SLIP ON FLANGE SS 304
Flange outside diameter: 673.1mm (O)
Flange thickness: 123.9mm (C)
Flange hub height: 85.6mm (Y)
Pitch Circle Diameter (PCD): 571.5mm (K)
Raised Face Height: 6.3mm (RF)
Bolt Holes: 16 off 53.8mm diameter
Bore Diameter: 327.1mm (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
Contact us for pricing 0.0 GBP
DN300 (12" NB) ASA1500 RF BOSSED SLIP ON FLANGE SS 316
Flange outside diameter: 673.1mm (O)
Flange thickness: 123.9mm (C)
Flange hub height: 85.6mm (Y)
Pitch Circle Diameter (PCD): 571.5mm (K)
Raised Face Height: 6.3mm (RF)
Bolt Holes: 16 off 53.8mm diameter
Bore Diameter: 327.1mm (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
DN300 (12" NB) ASA300 RF BLIND FLANGE SS 304
Outside diameter (O): 520.7mm
Flange thickness (C): 50.8mm
Pitch circle diameter (K): 450.8mm
Raised face height (RF): 1.5mm
Raised face diameter (R): 381.0mm
Number of bolt holes: 16
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
DN300 (12" NB) ASA300 RF BLIND FLANGE SS 316
Outside diameter (O): 520.7mm
Flange thickness (C): 50.8mm
Pitch circle diameter (K): 450.8mm
Raised face height (RF): 1.5mm
Raised face diameter (R): 381.0mm
Number of bolt holes: 16
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
Contact us for pricing 0.0 GBP
DN300 (12" NB) ASA300 RF BOSSED SLIP ON FLANGE SS 304
Flange outside diameter: 520.7mm (O)
Flange thickness: 50.8mm (C)
Flange hub height: 73.1mm (Y)
Pitch Circle Diameter (PCD): 450.8mm (K)
Raised Face Height: 1.5mm (RF)
Bolt Holes: 16 off 31.7mm diameter
Bore Diameter: 327.1mm (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 300LB, SOB

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN300 (12" NB) ASA300 RF BOSSED SLIP ON FLANGE SS 316
Flange outside diameter: 520.7mm (O)
Flange thickness: 50.8mm (C)
Flange hub height: 73.1mm (Y)
Pitch Circle Diameter (PCD): 450.8mm (K)
Raised Face Height: 1.5mm (RF)
Bolt Holes: 16 off 31.7mm diameter
Bore Diameter: 327.1mm (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 300LB, SOB

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN300 (12" NB) ASA600 RF BOSSED SLIP ON FLANGE SS 304
Flange outside diameter: 558.8mm (O)
Flange thickness: 66.5mm (C)
Flange hub height: 91.9mm (Y)
Pitch Circle Diameter (PCD): 488.9mm (K)
Raised Face Height: 6.3mm (RF)
Bolt Holes: 16 off 35.0mm diameter
Bore Diameter: 327.1mm (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 600LB, SOB

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN300 (12" NB) ASA600 RF BOSSED SLIP ON FLANGE SS 316
Flange outside diameter: 558.8mm (O)
Flange thickness: 66.5mm (C)
Flange hub height: 91.9mm (Y)
Pitch Circle Diameter (PCD): 488.9mm (K)
Raised Face Height: 6.3mm (RF)
Bolt Holes: 16 off 35.0mm diameter
Bore Diameter: 327.1mm (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 600LB, SOB

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN300 (12" NB) PN10 RF BLIND FLANGE SS 304
Flange OD (D): 445mm
Drilling (No. x Bolt Holes x L): 12 x M20 x 22mm
Pitch circle diameter (K): 400mm
Flange thickness (C4): 26mm
Material: 304
Rating: PN10
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
£ 1,130.85 1130.85 GBP
DN300 (12" NB) PN10 RF BLIND FLANGE SS 316
Flange OD (D): 445mm
Drilling (No. x Bolt Holes x L): 12 x M20 x 22mm
Pitch circle diameter (K): 400mm
Flange thickness (C4): 26mm
Material: 316
Rating: PN10
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
£ 2,186.80 2186.8 GBP
DN300 (12" NB) PN16 RF BLIND FLANGE SS 304
Flange OD (D): 460mm
Drilling (No. x Bolt Hole x L): 12 x M24 x 26mm
Pitch circle diameter (K): 410mm
Flange thickness (C1): 32mm
Raised face diameter (D1): 365mm
Raised face height (F1): 4mm
Material: 304
Rating: PN16
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
£ 1,893.92 1893.92 GBP
DN300 (12" NB) PN16 RF BLIND FLANGE SS 316
Flange OD (D): 460mm
Drilling (No. x Bolt Hole x L): 12 x M24 x 26mm
Pitch circle diameter (K): 410mm
Flange thickness (C1): 32mm
Raised face diameter (D1): 365mm
Raised face height (F1): 4mm
Material: 316
Rating: PN16
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
£ 1,689.73 1689.73 GBP
DN300 (12" NB) PN25 RF BLIND FLANGE SS 304
Flange OD (D): 485mm
Drilling (No. x Bolt Hole x L): 16 x M27 x 30mm
Pitch circle diameter (K): 430mm
Flange thickness (C1): 38mm
Raised face diameter (D1): 365mm
Raised face height (F1): 4mm
Material: 304
Rating: PN25
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
Contact us for pricing 0.0 GBP