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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 (1" NB) SCHEDULE 40s SEAMLESS ELBOW 45° SS 316
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 3.91mm
Material: Stainless
Grade: 316
Standards: ANSI B16.9
Radius: 1.5D
Angle: 45 Degree
Construction: Seamless
Certification Available: 3.1 BS EN 10204 Material Certification
£ 19.95 19.95 GBP
DN25 (1" NB) SCHEDULE 40s STAINLESS SEAMLESS PIPE 304
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 3.38mm (Sch40)
Material: Stainless
Grade: 304
Standards: ASTM A312
Standard Length: 6 meters
Weight Per Meter: 2.54
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
Contact us for pricing 0.0 GBP
DN25 (1" NB) SCHEDULE 40s STAINLESS SEAMLESS PIPE 316
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 3.38mm
Material: Stainless
Grade: 316
Standards: ASTM A312
Standard Length: 6 meter Random
Weight Per Meter: 2.52kg
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
£ 122.50 122.5 GBP
DN25 (1" NB) SCHEDULE 40s STAINLESS WELDED PIPE 304
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 3.38mm (Sch40)
Material: Stainless
Grade: 304
Standards: ASTM A312
Standard Length: 6 meter Random
Weight Per Meter: 2.52kg
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
£ 56.21 56.21 GBP
DN25 (1" NB) SCHEDULE 40s STAINLESS WELDED PIPE 316
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 3.38mm (Sch40)
Material: Stainless
Grade: 316
Standards: ASTM A312
Standard Length: 6 meters
Weight Per Meter: 2.54
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
£ 104.44 104.44 GBP
DN25 (1" NB) SCHEDULE 40s WELDED ELBOW 45° SS 316
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 3.91mm
Material: Stainless
Grade: 304
Standards: ANSI B16.9
Radius: 1.5D
Angle: 45 Degree
Construction: Welded
Certification Available: 3.1 BS EN 10204 Material Certification
£ 13.16 13.16 GBP
DN25 (1" NB) SCHEDULE 40s WELDED ELBOW 90° SS 304
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 3.91mm
Material: Stainless
Grade: 304
Standards: ANSI B16.9
Radius: Long 1.5D
Angle: 90 Degree
Construction: Welded
Certification Available: 3.1 BS EN 10204 Material Certification
£ 33.60 33.6 GBP
DN25 (1" NB) SCHEDULE 40s WELDED ELBOW 90° SS 316
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 3.91mm
Material: Stainless
Grade: 316
Standards: ANSI B16.9
Radius: Long 1.5D
Angle: 90 Degree
Construction: Welded
Certification Available: 3.1 BS EN 10204 Material Certification
£ 35.14 35.14 GBP
DN25 (1" NB) SCHEDULE 40s WELDED EQUAL TEE SS 316
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 3.91mm
Material: Stainless
Grade: 316
Standards: ANSI B16.9
Construction: Welded
Certification Available: 3.1 BS EN 10204 Material Certification
£ 59.43 59.43 GBP
DN25 (1" NB) SCHEDULE 80S ASA150 WELD NECK FLANGE SS 304
Outside diameter (O): 107.9mm
Flange thickness (C): 14.2mm
Hub length (X): 49.2mm
Neck height (A): 33.5mm
Pitch circle diameter (K): 79.2mm
Hub base diameter (Y): 55.6mm
Raised face height (RF): 15.5mm
Raised face diameter (R): 50.8mm
Number of bolt holes: 4
Material: Stainless Steel 304
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
DN25 (1" NB) SCHEDULE 80S ASA150 WELD NECK FLANGE SS 316
Outside diameter (O): 107.9mm
Flange thickness (C): 14.2mm
Hub length (X): 49.2mm
Neck height (A): 33.5mm
Pitch circle diameter (K): 79.2mm
Hub base diameter (Y): 55.6mm
Raised face height (RF): 15.5mm
Raised face diameter (R): 50.8mm
Number of bolt holes: 4
Material: Stainless Steel 316
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
DN25 (1" NB) SCHEDULE 80s STAINLESS SEAMLESS PIPE 304
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 4.55mm (Sch80)
Material: Stainless
Grade: 304
Standards: ASTM A312
Standard Length: 6 meter Random
Weight Per Meter: 3.24kg
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
Contact us for pricing 0.0 GBP
DN25 (1" NB) SCHEDULE 80s STAINLESS SEAMLESS PIPE 316
Outside Diameter (OD): 33.4mm
Wall Thickness (WT): 4.55mm (Sch80)
Material: Stainless
Grade: 316
Standards: ASTM A312
Standard Length: 6 meter Random
Weight Per Meter: 3.24kg
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
£ 199.57 199.57 GBP
DN25 (1" NB) SOCKET WELD 150# ELBOW 90° SS 316
Connection: 1" SW Socket Weld
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316
£ 38.50 38.5 GBP
DN25 (1" NB) SOCKET WELD 3000# ELBOW 90° SS 316
Both sides: 1" Socket Weld
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless 316

Standards:
Nominal Bore, Socket Weld, High Pressure, 3000 psi, 3000 lb, Class 3000, Forged Stainless, ANSI B16.11/BS3799

Applications:
High Pressure Applications, Steam, Chemicals, Water, Oil & Gasses*

Alternative terminology:
Forged, Stainless, Socket Weld, 90, 90° Elbow, Fittings.
£ 82.60 82.6 GBP
DN25 (1" NB) SOCKET WELD 3000# FULL COUPLING SS 316
Both sides: 1" Socket Weld
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless 316

Standards:
Nominal Bore, Socket Weld, High Pressure, 3000 psi, 3000 lb, Class 3000, Forged Stainless, ANSI B16.11/BS3799

Applications:
High Pressure Applications, Steam, Chemicals, Water, Oil & Gasses*

Alternative terminology:
Forged, Stainless, Socket Weld, Coupling, Socket, Straight, Equal.
£ 62.37 62.37 GBP
DN25 (1" NB) SOCKET WELD 3PC FB BALL VALVE LEVER OP. SS 316
Threaded: 1" NB Socket Weld (SW)
Suits an outside diameter (OD) of: 33.4mm
Construction: 3 Piece
Body Material: 316 Stainless
Connection: Socket Weld
Bore: Full Bore
Internals: PTFE Seals

Applications:
Water, Oil & Gas* - Heating and Plumbing, HVAC, Gasses* and Compressed Air, Agricultural Irrigation, Fuel and Oils, Cooling, Marine, Fire Protection Sprinkler Systems, Food & Beverage.

Alternative terminology:
Isolation Valve, Lever Valve, Handle Valve, Shut off Valve, Quarter 1/4 Turn

Part of our Isolation and Valves Range
£ 156.10 156.1 GBP
DN25 (1" NB) SW 150# ELBOW 45° SS 316
Thread: 1" SW (Socket Weld)
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316
Elbow Angle: 45° (Degree)

Standards:
Nominal Bore, Socket Weld, Elbow, 45°, 45 Deg, Weldable, Low Pressure, 150 psi
£ 26.74 26.74 GBP
DN25 (1" NB) SW 150# ELBOW 90° SS 316
Thread: 1" SW (Socket Weld)
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316
Elbow Angle: 90° (Degree)

Standards:
Nominal Bore, Socket Weld, Elbow, 90°, 90 Deg, Weldable, Low Pressure, 150 psi
£ 26.32 26.32 GBP
DN25 (1" NB) SW 150# (FXF) CONE SEAT UNION SS 316
Thread: 1" SW (Socket Weld)
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316

Standards:
Nominal Bore, Threaded, Screwed, Low Pressure, 150 psi
£ 32.27 32.27 GBP
DN25 (1" NB) SW 150# EQUAL FULL SOCKET SS 316
Connection: 1" SW (Socket Weld)
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316

Standards:
Nominal Bore, Threaded, Screwed, Low Pressure, 150 psi
£ 21.21 21.21 GBP
DN25 (1" NB) SW 150# EQUAL TEE SS 316
Thread: 1" SW (Socket Weld)
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless Steel
Grade: 316
£ 33.67 33.67 GBP
DN25 (1" NB) SW 150# ROUND CAP SS 316
Thread: 1" SW (Socket Weld)
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316

Standards:
Nominal Bore, SW (Socket Weld), Weldable, Low Pressure, 150 psi

Alternative terminology:
SW Cap, Termination, Blanking Cap, Cap End
£ 14.21 14.21 GBP
DN25 (1" NB) SW 3000# EQUAL COUPLING SS 316
Threaded: 3/4" SW
Suits an outside diameter (OD) of: 33.4mm
Material: Forged Stainless Steel
Grade: 316
Construction: Forged Stainless
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Full Sock, Equal Socket, Coupling, Stainless Steel
£ 76.02 76.02 GBP
DN25 (1" NB) SW 3000# EQUAL TEE SS 316
Threaded: 3/4" SW (Socket Weld) Female
Suits an outside diameter (OD) of: 33.4mm
Material: Forged Stainless Steel
Grade: 316
Construction: Forged
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Full Sock, Equal Socket, Coupling, Stainless Steel
£ 211.19 211.19 GBP
DN25 (1" NB) SW 3000# FXF ELBOW 45° SS 316
Threaded: ¾" SW (Socket Weld) Female
Suits an outside diameter (OD) of: 33.4mm
Material: Forged Stainless Steel
Grade: 316
Construction: Forged
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Full Sock, Equal Socket, Coupling, Stainless Steel
£ 89.46 89.46 GBP
DN25 (1" NB) SW 3000# FXF ELBOW 90° SS 316
Threaded: ¾" SW (Socket Weld) Female
Suits an outside diameter (OD) of: 33.4mm
Material: Forged Stainless Steel
Grade: 316
Construction: Forged
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Full Sock, Equal Socket, Coupling, Stainless Steel
£ 95.27 95.27 GBP
DN25 (1" NB) SW 3000# HALF COUPLING SS 316
Threaded: 3/4" SW (Socket Weld) Female
Suits an outside diameter (OD) of: 33.4mm
Material: Forged Stainless Steel
Grade: 316
Construction: Forged
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Full Sock, Equal Half Socket, Half Coupling, Stainless Steel
£ 59.08 59.08 GBP
DN25 (1" NB) SW 3000# ROUND CAP END SS 316
Threaded: 3/4" SW (Socket Weld) Female
Suits an outside diameter (OD) of: 33.4mm
Material: Forged Stainless Steel
Grade: 316
Construction: Forged
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Full Sock, Equal Socket, Coupling, Stainless Steel
£ 53.41 53.41 GBP
DN25 (1" NB) U-BOLT C.W NUTS SS 304 (A2)
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless Steel 304 (A2)
Thread: M6
Comes with 2x Nuts
Contact us for pricing 0.0 GBP
DN25 (1" NB) U-BOLT C.W NUTS SS 316 (A4)
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless Steel 316 (A4)
Thread: M6
Comes with 2x Nuts
Contact us for pricing 0.0 GBP
DN25 (1" NB) UN-BOSSED SPLIT BAND HANGER SS 304
Suits an outside diameter (OD) of: 33.4mm
Band width: 25mm
Band thickness: 3mm
Bolt Size: M6
Material: Stainless Steel
Grade: 304
Contact us for pricing 0.0 GBP
DN25 DIN UNION NUT SS 304 (DIN PART 1 OF 4)
Suits a DN25 DIN Union
Material: Stainless
Grade: 304

Applications: Hygienic, Dairy & Sanitary - Dairy Processing, Brewing / Breweries / Beverage Production, Distilleries, Water Treatment, Waste Water, Chemicals, Bottling Plants, Medical & Pharmaceutical, Hospitals.
£ 13.65 13.65 GBP
DN25 DIN UNION WELD LINER SS 316 (DIN PART 3 OF 4)
Suits a DN25 DIN Union
Material: Stainless
Grade: 316

Applications: Hygienic, Dairy & Sanitary - Dairy Processing, Brewing / Breweries / Beverage Production, Distilleries, Water Treatment, Waste Water, Chemicals, Bottling Plants, Medical & Pharmaceutical, Hospitals.
£ 13.93 13.93 GBP
DN25 PN10 / PN16 / PN25 / PN40 RF BLIND FLANGE SS 304
Flange OD (D): 115mm
Drilling (No. x Bolt Holes x L): 4 x M12 x 14mm
Pitch circle diameter (K): 85mm
Flange thickness (C4): 18mm
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
£ 53.41 53.41 GBP
DN25 PN10 / PN16 / PN25 / PN40 RF BLIND FLANGE SS 316
Flange OD (D): 115mm
Drilling (No. x Bolt Holes x L): 4 x M12 x 14mm
Pitch circle diameter (K): 85mm
Flange thickness (C4): 18mm
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
£ 74.76 74.76 GBP
DN25 PN10/PN16/PN25/PN40 RF SLIP ON PLATE FLANGE SS 304
Flange inside diameter of: 34.5mm (B1)
Flange overall diameter: 115mm (D)
PCD: 85mm (K)
Bolt Holes: 4 off 14mm diameter (L)
Flange Thickness: 16mm (C1)
Diameter of Raised Face (RF): 60mm (D1)
Height of raised face: 2mm (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
£ 41.86 41.86 GBP
DN25 PN10/PN16/PN25/PN40 RF SLIP ON PLATE FLANGE SS 316
Flange inside diameter of: 34.5mm (B1)
Flange overall diameter: 115mm (D)
PCD: 85mm (K)
Bolt Holes: 4 off 14mm diameter (L)
Flange Thickness: 16mm (C1)
Diameter of Raised Face (RF): 60mm (D1)
Height of raised face: 2mm (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
£ 59.78 59.78 GBP
DN25 X 8 (1" X 1/4" NB) BSP 150# REDUCING HEX BUSH SS 316
Side One Thread: 1" BSPT Male
Suits an outside diameter (OD) of: 33.4mm
Side Two Thread: 1/4" BSPP Female
Suits an outside diameter (OD) of: 13.72mm
Material: Stainless
Grade: 316
£ 9.17 9.17 GBP
DN25 X 8 (1" X 1/4" NB) BSP 150# REDUCING HEX NIPPLE SS 316
Side One Thread: 1" BSPT Male
Suits an outside diameter (OD) of: 33.4mm
Side Two Thread: 1/4" BSPT Male
Suits an outside diameter (OD) of: 13.72mm
Material: Stainless
Grade: 316
£ 11.97 11.97 GBP