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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 (10" NB) SCHEDULE 10S ASA300 WELD NECK FLANGE SS 316
Outside diameter (O): 444.5mm
Flange thickness (C): 47.7mm
Hub height (X): 320.5mm
Length through hub (A): 273.0mm
Bolt circle diameter (K): 336.6mm
Overall height (Y): 117.3mm
Raised face thickness (RF): 1.5mm
Bore (B): 323.8mm
Number of bolt holes: 16
Bolt hole diameter: 28.4mm
Approx. weight: 44.3kg

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN250 (10" NB) SCHEDULE 10s STAINLESS WELDED PIPE 304
Outside Diameter (OD): 273mm
Wall Thickness (WT): 4.19mm (Sch10)
Material: Stainless
Grade: 304
Standards: ASTM A312
Random Length: 5.8 to 7.5 meter Random
Weight Per Meter: 28.2kg
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
£ 719.95 719.95 GBP
DN250 (10" NB) SCHEDULE 10s STAINLESS WELDED PIPE 316
Outside Diameter (OD): 273mm
Wall Thickness (WT): 4.19mm (Sch10)
Material: Stainless
Grade: 316
Standards: ASTM A312
Random Length: 5.8 to 7.5 meter Random
Weight Per Meter: 28.2kg
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
£ 1,053.22 1053.22 GBP
DN250 (10" NB) SCHEDULE 40S A403 SEAMLESS EQUAL TEE SS 304
Outside Diameter (OD): 273.9mm
Wall Thickness: 9.27mm
Centre to End: 216.0mm
Schedule: 40s
Weight: 41.4kg

Material: Stainless Steel
Material Grade: ASTM A403

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Tee, Equal Tee, LR, Welding Tee, Weldable
£ 2,988.72 2988.72 GBP
DN250 (10" NB) SCHEDULE 40S A403 SEAMLESS EQUAL TEE SS 316
Outside Diameter (OD): 273.9mm
Wall Thickness: 9.27mm
Centre to End: 216.0mm
Schedule: 40s
Weight: 41.4kg

Material: Stainless Steel
Material Grade: ASTM A403

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Tee, Equal Tee, LR, Welding Tee, Weldable
£ 3,205.86 3205.86 GBP
DN250 (10" NB) SCHEDULE 40S A403 SEAMLESS LONG RADIUS 90 DEG ELBOW SS 304
Outside Diameter (OD): 273.9mm
Wall Thickness: 9.27mm
Centre to Face: 381.0mm
Schedule: A403 Seamless
Weight: 36.1kg

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
Contact us for pricing 0.0 GBP
DN250 (10" NB) SCHEDULE 40S A403 SEAMLESS LONG RADIUS 90 DEG ELBOW SS 316
Outside Diameter (OD): 273.9mm
Wall Thickness: 9.27mm
Centre to Face: 381.0mm
Schedule: A403 Seamless
Weight: 36.1kg

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
Contact us for pricing 0.0 GBP
DN250 (10" NB) SCHEDULE 40S A403 SEAMLESS SHORT RADIUS 90 DEG ELBOW SS 304
Outside Diameter (OD): 273.9mm
Wall Thickness: 9.27mm
Centre to Face: 254.0mm
Schedule: A403 Seamless
Weight: 18.1kg

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
Contact us for pricing 0.0 GBP
DN250 (10" NB) SCHEDULE 40S A403 SEAMLESS SHORT RADIUS 90 DEG ELBOW SS 316
Outside Diameter (OD): 273.9mm
Wall Thickness: 9.27mm
Centre to Face: 254.0mm
Schedule: A403 Seamless
Weight: 18.1kg

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
Contact us for pricing 0.0 GBP
DN250 (10" NB) SCHEDULE 40S A403 WELDED EQUAL TEE SS 304
Outside Diameter (OD): 273.9mm
Wall Thickness: 9.27mm
Centre to End: 216.0mm
Schedule: 40s
Weight: 41.4kg

Material: Stainless Steel
Material Grade: ASTM A403

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Tee, Equal Tee, LR, Welding Tee, Weldable
£ 2,988.72 2988.72 GBP
DN250 (10" NB) SCHEDULE 40S A403 WELDED EQUAL TEE SS 316
Outside Diameter (OD): 273.9mm
Wall Thickness: 9.27mm
Centre to End: 216.0mm
Schedule: 40s
Weight: 41.4kg

Material: Stainless Steel
Material Grade: ASTM A403

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Tee, Equal Tee, LR, Welding Tee, Weldable
£ 3,205.86 3205.86 GBP
DN250 (10" NB) SCHEDULE 40S A403 WELDED LONG RADIUS 45 DEG ELBOW SS 304
Outside Diameter (OD): 273.9mm
Wall Thickness: 9.27mm

Schedule: A403 Welded
Weight: 18.1kg

Material: Stainless Steel
Material Grade: 304

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Elbow, Long Radius, 45°, LR, Bend, Weldable
£ 1,699.46 1699.46 GBP
DN250 (10" NB) SCHEDULE 40S A403 WELDED LONG RADIUS 45 DEG ELBOW SS 316
Outside Diameter (OD): 273.9mm
Wall Thickness: 9.27mm

Schedule: A403 Welded
Weight: 18.1kg

Material: Stainless Steel
Material Grade: 316

Certification Available: 3.1 BS EN 10204 Material Certification

Alternative Terminology: Buttweld Elbow, Long Radius, 45°, LR, Bend, Weldable
£ 1,937.32 1937.32 GBP
DN250 (10" NB) SCHEDULE 40S A403 WELDED LONG RADIUS 90 DEG ELBOW SS 304
Outside Diameter (OD): 273.9mm
Wall Thickness: 9.27mm
Centre to Face: 381.0mm
Schedule: A403 Welded
Weight: 36.1kg

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
£ 2,789.50 2789.5 GBP
DN250 (10" NB) SCHEDULE 40S A403 WELDED LONG RADIUS 90 DEG ELBOW SS 316
Outside Diameter (OD): 273.9mm
Wall Thickness: 9.27mm
Centre to Face: 381.0mm
Schedule: A403 Welded
Weight: 36.1kg

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
£ 3,641.54 3641.54 GBP
DN250 (10" NB) SCHEDULE 40S A403 WELDED SHORT RADIUS 90 DEG ELBOW SS 304
Outside Diameter (OD): 273.9mm
Wall Thickness: 9.27mm
Centre to Face: 254.0mm
Schedule: A403 Welded
Weight: 18.1kg

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
£ 1,699.46 1699.46 GBP
DN250 (10" NB) SCHEDULE 40S A403 WELDED SHORT RADIUS 90 DEG ELBOW SS 316
Outside Diameter (OD): 273.9mm
Wall Thickness: 9.27mm
Centre to Face: 254.0mm
Schedule: A403 Welded
Weight: 18.1kg

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
£ 1,937.32 1937.32 GBP
DN250 (10" NB) SCHEDULE 40S ASA150 WELD NECK FLANGE SS 304
Outside diameter (O): 406.4mm
Flange thickness (C): 30.2mm
Hub length (X): 304 Stainless Steel.8mm
Neck height (A): 273.0mm
Pitch circle diameter (K): 361.9mm
Hub base diameter (Y): 101.6mm
Raised face height (RF): 15.5mm
Raised face diameter (R): 323.8mm
Number of bolt holes: 12
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
Contact us for pricing 0.0 GBP
DN250 (10" NB) SCHEDULE 40S ASA150 WELD NECK FLANGE SS 316
Outside diameter (O): 406.4mm
Flange thickness (C): 30.2mm
Hub length (X): 316 Stainless Steel.8mm
Neck height (A): 273.0mm
Pitch circle diameter (K): 361.9mm
Hub base diameter (Y): 101.6mm
Raised face height (RF): 15.5mm
Raised face diameter (R): 323.8mm
Number of bolt holes: 12
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
£ 1,582.91 1582.91 GBP
DN250 (10" NB) SCHEDULE 40S ASA300 WELD NECK FLANGE SS 304
Outside diameter (O): 444.5mm
Flange thickness (C): 47.7mm
Hub height (X): 320.5mm
Length through hub (A): 273.0mm
Bolt circle diameter (K): 336.6mm
Overall height (Y): 117.3mm
Raised face thickness (RF): 1.5mm
Bore (B): 323.8mm
Number of bolt holes: 16
Bolt hole diameter: 28.4mm
Approx. weight: 44.3kg

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN250 (10" NB) SCHEDULE 40S ASA300 WELD NECK FLANGE SS 316
Outside diameter (O): 444.5mm
Flange thickness (C): 47.7mm
Hub height (X): 320.5mm
Length through hub (A): 273.0mm
Bolt circle diameter (K): 336.6mm
Overall height (Y): 117.3mm
Raised face thickness (RF): 1.5mm
Bore (B): 323.8mm
Number of bolt holes: 16
Bolt hole diameter: 28.4mm
Approx. weight: 44.3kg

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN250 (10" NB) SCHEDULE 40s STAINLESS WELDED PIPE 304
Outside Diameter (OD): 273mm
Wall Thickness (WT): 9.27mm (Sch40)
Material: Stainless
Grade: 304
Standards: ASTM A312
Standard Length: 6 meter Random
Weight Per Meter: 61.22kg
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
£ 1,974.42 1974.42 GBP
DN250 (10" NB) SCHEDULE 40s STAINLESS WELDED PIPE 316
Outside Diameter (OD): 273mm
Wall Thickness (WT): 9.27mm (Sch40)
Material: Stainless
Grade: 316
Standards: ASTM A312
Standard Length: 6 meters
Weight Per Meter: 61.22
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
£ 2,723.77 2723.77 GBP
DN250 (10" NB) SCHEDULE 80S ASA300 WELD NECK FLANGE SS 316
Outside diameter (O): 444.5mm
Flange thickness (C): 47.7mm
Hub height (X): 320.5mm
Length through hub (A): 273.0mm
Bolt circle diameter (K): 336.6mm
Overall height (Y): 117.3mm
Raised face thickness (RF): 1.5mm
Bore (B): 323.8mm
Number of bolt holes: 16
Bolt hole diameter: 28.4mm
Approx. weight: 44.3kg

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN250 (10" NB) U-BOLT C.W NUTS SS 304 (A2)
Suits an outside diameter (OD) of: 273mm
Material: Stainless Steel 304 (A2)
Thread: M16
Comes with 2x Nuts
Contact us for pricing 0.0 GBP
DN250 (10" NB) U-BOLT C.W NUTS SS 316 (A4)
Suits an outside diameter (OD) of: 273mm
Material: Stainless Steel 316 (A4)
Thread: M16
Comes with 2x Nuts
Contact us for pricing 0.0 GBP
DN250 PN10 RF SLIP ON PLATE FLANGE SS 304
Flange inside diameter of: 276.5mm (B1)
Flange overall diameter: 395mm (D)
PCD: 350mm (K)
Bolt Holes: 12 off 22mm diameter (L)
Flange Thickness: 26mm (C1)
Diameter of Raised Face (RF): 312mm (D1)
Height of raised face: 4mm (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, Flat Faced, FFSO

Part of our Flanges and Flanged Connections Range
£ 444.85 444.85 GBP
DN250 PN10 RF SLIP ON PLATE FLANGE SS 316
Flange inside diameter of: 276.5mm (B1)
Flange overall diameter: 395mm (D)
PCD: 350mm (K)
Bolt Holes: 12 off 22mm diameter (L)
Flange Thickness: 26mm (C1)
Diameter of Raised Face (RF): 312mm (D1)
Height of raised face: 4mm (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, Flat Faced, FFSO

Part of our Flanges and Flanged Connections Range
£ 659.89 659.89 GBP
DN250 PN16 RF SLIP ON PLATE FLANGE SS 304
Flange inside diameter of: 276.5mm (B1)
Flange overall diameter: 405mm (D)
PCD: 355mm (K)
Bolt Holes: 12 off 26mm diameter (L)
Flange Thickness: 29mm (C1)
Diameter of Raised Face (RF): 312mm (D1)
Height of raised face: 4mm (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
£ 427.63 427.63 GBP
DN250 PN16 RF SLIP ON PLATE FLANGE SS 316
Flange inside diameter of: 276.5mm (B1)
Flange overall diameter: 405mm (D)
PCD: 355mm (K)
Bolt Holes: 12 off 26mm diameter (L)
Flange Thickness: 29mm (C1)
Diameter of Raised Face (RF): 312mm (D1)
Height of raised face: 4mm (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
£ 610.68 610.68 GBP
DN250 PN25 RF SLIP ON PLATE FLANGE SS 304
Flange inside diameter of: 276.5mm (B1)
Flange overall diameter: 425mm (D)
PCD: 370mm (K)
Bolt Holes: 12 off 30mm diameter (L)
Flange Thickness: 35mm (C1)
Diameter of Raised Face (RF): 312mm (D1)
Height of raised face: 4mm (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, Flat Faced, FFSO

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN250 PN25 RF SLIP ON PLATE FLANGE SS 316
Flange inside diameter of: 276.5mm (B1)
Flange overall diameter: 425mm (D)
PCD: 370mm (K)
Bolt Holes: 12 off 30mm diameter (L)
Flange Thickness: 35mm (C1)
Diameter of Raised Face (RF): 312mm (D1)
Height of raised face: 4mm (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, Flat Faced, FFSO

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN250 PN40 RF BLIND FLANGE SS 304
Flange OD (D): 450mm
Drilling (No. x Bolt Holes x L): 12 x M24 x 33mm
Pitch circle diameter (K): 385mm
Flange thickness (C4): 38mm
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
Contact us for pricing 0.0 GBP
DN250 PN40 RF BLIND FLANGE SS 316
Flange OD (D): 450mm
Drilling (No. x Bolt Holes x L): 12 x M24 x 33mm
Pitch circle diameter (K): 385mm
Flange thickness (C4): 38mm
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
Contact us for pricing 0.0 GBP
DN250 PN40 RF SLIP ON PLATE FLANGE SS 304
Flange inside diameter of: 276.5mm (B1)
Flange overall diameter: 450mm (D)
PCD: 385mm (K)
Bolt Holes: 12 off 33mm diameter (L)
Flange Thickness: 42mm (C1)
Diameter of Raised Face (RF): 312mm (D1)
Height of raised face: 4mm (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
DN250 PN40 RF SLIP ON PLATE FLANGE SS 316
Flange inside diameter of: 276.5mm (B1)
Flange overall diameter: 450mm (D)
PCD: 385mm (K)
Bolt Holes: 12 off 33mm diameter (L)
Flange Thickness: 42mm (C1)
Diameter of Raised Face (RF): 312mm (D1)
Height of raised face: 4mm (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
Contact us for pricing 0.0 GBP
DN250 X DN150 (10" X 6" NB) SCHEDULE 40S A403 SEAMLESS CONCENTRIC REDUCER SS 304
Outside Diameter (OD): 273 X 168mm
Wall Thickness: 9.27 X 7.11mm
Length: 178mm
Contact us for pricing 0.0 GBP
DN250 X DN150 (10" X 6" NB) SCHEDULE 40S A403 SEAMLESS CONCENTRIC REDUCER SS 316
Outside Diameter (OD): 273 X 168mm
Wall Thickness: 9.27 X 7.11mm
Length: 178mm
Contact us for pricing 0.0 GBP
DN250 X DN150 (10" X 6" NB) SCHEDULE 40S A403 SEAMLESS ECCENTRIC REDUCER SS 304
Outside Diameter (OD): 273 X 168mm
Wall Thickness: 9.27 X 7.11mm
Length: 178mm
Contact us for pricing 0.0 GBP
DN250 X DN150 (10" X 6" NB) SCHEDULE 40S A403 SEAMLESS ECCENTRIC REDUCER SS 316
Outside Diameter (OD): 273 X 168mm
Wall Thickness: 9.27 X 7.11mm
Length: 178mm
Contact us for pricing 0.0 GBP