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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

DN125 (5" NB) U-BOLT C.W NUTS SS 304 (A2)
Suits an outside diameter (OD) of: 139.7mm
Material: Stainless Steel 304 (A2)
Thread: M12
Comes with 2x Nuts
Contact us for pricing 0.0 GBP
DN125 (5" NB) U-BOLT C.W NUTS SS 304 (A2)
Suits an outside diameter (OD) of: 141.3mm
Material: Stainless Steel 304 (A2)
Thread: M12
Comes with 2x Nuts
Contact us for pricing 0.0 GBP
DN125 (5" NB) U-BOLT C.W NUTS SS 316 (A4)
Suits an outside diameter (OD) of: 139.7mm
Material: Stainless Steel 316 (A4)
Thread: M12
Comes with 2x Nuts
Contact us for pricing 0.0 GBP
DN125 (5" NB) U-BOLT C.W NUTS SS 316 (A4)
Suits an outside diameter (OD) of: 141.3mm
Material: Stainless Steel 316 (A4)
Thread: M12
Comes with 2x Nuts
Contact us for pricing 0.0 GBP
DN125 (5" NB) UN-BOSSED SPLIT BAND HANGER SS 304
Suits an outside diameter (OD) of: 139.7mm
Band width: 40mm
Band thickness: 5mm
Bolt Size: M12
Material: Stainless Steel
Grade: 304
Contact us for pricing 0.0 GBP
DN125 PN10/PN16 RF SLIP ON PLATE FLANGE SS 304
Flange inside diameter of: 141.5mm (B1)
Flange overall diameter: 250mm (D)
PCD: 210mm (K)
Bolt Holes: 8 off 18mm diameter (L)
Flange Thickness: 22mm (C1)
Diameter of Raised Face (RF): 178mm (D1)
Height of raised face: 3mm (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
£ 154.77 154.77 GBP
DN125 PN10/PN16 RF SLIP ON PLATE FLANGE SS 316
Flange inside diameter of: 141.5mm (B1)
Flange overall diameter: 250mm (D)
PCD: 210mm (K)
Bolt Holes: 8 off 18mm diameter (L)
Flange Thickness: 22mm (C1)
Diameter of Raised Face (RF): 178mm (D1)
Height of raised face: 3mm (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
£ 216.23 216.23 GBP
DN125 PN25 / PN40 RF BLIND FLANGE SS 304
Flange OD (D): 270mm
Drilling (No. x Bolt Holes x L): 8 x M24 x 26mm
Pitch circle diameter (K): 220mm
Flange thickness (C4): 26mm
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
£ 620.20 620.2 GBP
DN125 PN25 / PN40 RF BLIND FLANGE SS 316
Flange OD (D): 270mm
Drilling (No. x Bolt Holes x L): 8 x M24 x 26mm
Pitch circle diameter (K): 220mm
Flange thickness (C4): 26mm
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
£ 544.88 544.88 GBP
DN125 PN25/PN40 RF SLIP ON PLATE FLANGE SS 304
Flange inside diameter of: 141.5mm (B1)
Flange overall diameter: 270mm (D)
PCD: 220mm (K)
Bolt Holes: 8 off 26mm diameter (L)
Flange Thickness: 28mm (C1)
Diameter of Raised Face (RF): 178mm (D1)
Height of raised face: 3mm (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
DN125 PN25/PN40 RF SLIP ON PLATE FLANGE SS 316
Flange inside diameter of: 141.5mm (B1)
Flange overall diameter: 270mm (D)
PCD: 220mm (K)
Bolt Holes: 8 off 26mm diameter (L)
Flange Thickness: 28mm (C1)
Diameter of Raised Face (RF): 178mm (D1)
Height of raised face: 3mm (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
DN125 X DN100 (5" X 4" NB) SCHEDULE 40S A403 SEAMLESS CONCENTRIC REDUCER SS 304
Outside Diameter (OD): 141 X 114mm
Wall Thickness: 6.55 X 6.02mm
Length: 127mm
Contact us for pricing 0.0 GBP
DN125 X DN100 (5" X 4" NB) SCHEDULE 40S A403 SEAMLESS CONCENTRIC REDUCER SS 316
Outside Diameter (OD): 141 X 114mm
Wall Thickness: 6.55 X 6.02mm
Length: 127mm
Contact us for pricing 0.0 GBP
DN125 X DN100 (5" X 4" NB) SCHEDULE 40S A403 SEAMLESS ECCENTRIC REDUCER SS 304
Outside Diameter (OD): 141 X 114mm
Wall Thickness: 6.55 X 6.02mm
Length: 127mm
Contact us for pricing 0.0 GBP
DN125 X DN100 (5" X 4" NB) SCHEDULE 40S A403 SEAMLESS ECCENTRIC REDUCER SS 316
Outside Diameter (OD): 141 X 114mm
Wall Thickness: 6.55 X 6.02mm
Length: 127mm
Contact us for pricing 0.0 GBP
DN125 X DN100 (5" X 4" NB) SCHEDULE 40S A403 WELDED CONCENTRIC REDUCER SS 304
Outside Diameter (OD): 141 X 114mm
Wall Thickness: 6.55 X 6.02mm
Length: 127mm
£ 143.64 143.64 GBP
DN125 X DN100 (5" X 4" NB) SCHEDULE 40S A403 WELDED CONCENTRIC REDUCER SS 316
Outside Diameter (OD): 141 X 114mm
Wall Thickness: 6.55 X 6.02mm
Length: 127mm
£ 216.93 216.93 GBP
DN125 X DN100 (5" X 4" NB) SCHEDULE 40S A403 WELDED ECCENTRIC REDUCER SS 304
Outside Diameter (OD): 141 X 114mm
Wall Thickness: 6.55 X 6.02mm
Length: 127mm
£ 207.48 207.48 GBP
DN125 X DN100 (5" X 4" NB) SCHEDULE 40S A403 WELDED ECCENTRIC REDUCER SS 316
Outside Diameter (OD): 141 X 114mm
Wall Thickness: 6.55 X 6.02mm
Length: 127mm
£ 355.11 355.11 GBP
DN125 X DN50 (5" X 2" NB) SCHEDULE 40S A403 SEAMLESS CONCENTRIC REDUCER SS 304
Outside Diameter (OD): 141 X 60mm
Wall Thickness: 6.55 X 3.91mm
Length: 127mm
Contact us for pricing 0.0 GBP
DN125 X DN50 (5" X 2" NB) SCHEDULE 40S A403 SEAMLESS CONCENTRIC REDUCER SS 316
Outside Diameter (OD): 141 X 60mm
Wall Thickness: 6.55 X 3.91mm
Length: 127mm
Contact us for pricing 0.0 GBP
DN125 X DN50 (5" X 2" NB) SCHEDULE 40S A403 SEAMLESS ECCENTRIC REDUCER SS 304
Outside Diameter (OD): 141 X 60mm
Wall Thickness: 6.55 X 3.91mm
Length: 127mm
Contact us for pricing 0.0 GBP
DN125 X DN50 (5" X 2" NB) SCHEDULE 40S A403 SEAMLESS ECCENTRIC REDUCER SS 316
Outside Diameter (OD): 141 X 60mm
Wall Thickness: 6.55 X 3.91mm
Length: 127mm
Contact us for pricing 0.0 GBP
DN125 X DN50 (5" X 2" NB) SCHEDULE 40S A403 WELDED CONCENTRIC REDUCER SS 304
Outside Diameter (OD): 141 X 60mm
Wall Thickness: 6.55 X 3.91mm
Length: 127mm
£ 230.02 230.02 GBP
DN125 X DN50 (5" X 2" NB) SCHEDULE 40S A403 WELDED CONCENTRIC REDUCER SS 316
Outside Diameter (OD): 141 X 60mm
Wall Thickness: 6.55 X 3.91mm
Length: 127mm
£ 355.11 355.11 GBP
DN125 X DN50 (5" X 2" NB) SCHEDULE 40S A403 WELDED ECCENTRIC REDUCER SS 304
Outside Diameter (OD): 141 X 60mm
Wall Thickness: 6.55 X 3.91mm
Length: 127mm
£ 334.11 334.11 GBP
DN125 X DN50 (5" X 2" NB) SCHEDULE 40S A403 WELDED ECCENTRIC REDUCER SS 316
Outside Diameter (OD): 141 X 60mm
Wall Thickness: 6.55 X 3.91mm
Length: 127mm
£ 464.73 464.73 GBP
DN125 X DN65 (5" X 2½" NB) SCHEDULE 40S A403 SEAMLESS CONCENTRIC REDUCER SS 304
Outside Diameter (OD): 141 X 73mm
Wall Thickness: 6.55 X 5.16mm
Length: 127mm
Contact us for pricing 0.0 GBP
DN125 X DN65 (5" X 2½" NB) SCHEDULE 40S A403 SEAMLESS CONCENTRIC REDUCER SS 316
Outside Diameter (OD): 141 X 73mm
Wall Thickness: 6.55 X 5.16mm
Length: 127mm
Contact us for pricing 0.0 GBP
DN125 X DN65 (5" X 2½" NB) SCHEDULE 40S A403 SEAMLESS ECCENTRIC REDUCER SS 304
Outside Diameter (OD): 141 X 73mm
Wall Thickness: 6.55 X 5.16mm
Length: 127mm
Contact us for pricing 0.0 GBP
DN125 X DN65 (5" X 2½" NB) SCHEDULE 40S A403 SEAMLESS ECCENTRIC REDUCER SS 316
Outside Diameter (OD): 141 X 73mm
Wall Thickness: 6.55 X 5.16mm
Length: 127mm
Contact us for pricing 0.0 GBP
DN125 X DN65 (5" X 2½" NB) SCHEDULE 40S A403 WELDED CONCENTRIC REDUCER SS 304
Outside Diameter (OD): 141 X 73mm
Wall Thickness: 6.55 X 5.16mm
Length: 127mm
£ 230.23 230.23 GBP
DN125 X DN65 (5" X 2½" NB) SCHEDULE 40S A403 WELDED CONCENTRIC REDUCER SS 316
Outside Diameter (OD): 141 X 73mm
Wall Thickness: 6.55 X 5.16mm
Length: 127mm
£ 290.99 290.99 GBP
DN125 X DN65 (5" X 2½" NB) SCHEDULE 40S A403 WELDED ECCENTRIC REDUCER SS 304
Outside Diameter (OD): 141 X 73mm
Wall Thickness: 6.55 X 5.16mm
Length: 127mm
£ 286.16 286.16 GBP
DN125 X DN65 (5" X 2½" NB) SCHEDULE 40S A403 WELDED ECCENTRIC REDUCER SS 316
Outside Diameter (OD): 141 X 73mm
Wall Thickness: 6.55 X 5.16mm
Length: 127mm
£ 414.19 414.19 GBP
DN125 X DN80 (5" X 3" NB) SCHEDULE 40S A403 SEAMLESS CONCENTRIC REDUCER SS 304
Outside Diameter (OD): 141 X 89mm
Wall Thickness: 6.55 X 5.49mm
Length: 127mm
Contact us for pricing 0.0 GBP
DN125 X DN80 (5" X 3" NB) SCHEDULE 40S A403 SEAMLESS CONCENTRIC REDUCER SS 316
Outside Diameter (OD): 141 X 89mm
Wall Thickness: 6.55 X 5.49mm
Length: 127mm
Contact us for pricing 0.0 GBP
DN125 X DN80 (5" X 3" NB) SCHEDULE 40S A403 SEAMLESS ECCENTRIC REDUCER SS 304
Outside Diameter (OD): 141 X 89mm
Wall Thickness: 6.55 X 5.49mm
Length: 127mm
Contact us for pricing 0.0 GBP
DN125 X DN80 (5" X 3" NB) SCHEDULE 40S A403 SEAMLESS ECCENTRIC REDUCER SS 316
Outside Diameter (OD): 141 X 89mm
Wall Thickness: 6.55 X 5.49mm
Length: 127mm
Contact us for pricing 0.0 GBP
DN125 X DN80 (5" X 3" NB) SCHEDULE 40S A403 WELDED CONCENTRIC REDUCER SS 304
Outside Diameter (OD): 141 X 89mm
Wall Thickness: 6.55 X 5.49mm
Length: 127mm
£ 201.11 201.11 GBP