Skip to Content

Integraflow Store 

  1. Products
  2. Stainless
  3. Nominal Bore

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.

List 600
Sort By: Name (A-Z)

Nominal Bore

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 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
£ 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
£ 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
£ 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
£ 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
DN25 X 8 (1" X 1/4" NB) BSP 150# REDUCING SOCKET SS 316
Side One Thread: 1" BSP Female
Suits an outside diameter (OD) of: 33.4mm
Side Two Thread: 1/4" BSP Female
Suits an outside diameter (OD) of: 13.72mm
Material: Stainless
Grade: 316
£ 19.95 19.95 GBP
DN25 X 8 (1" X 1/4" NB) BSPT REDUCING BUSH SS 316
Side 1 threaded: 1" BSPT Male
Side 1 suits an outside diameter (OD) of: 33.4mm
Side 2 threaded: 1/4" BSPT Female
Side 2 suits suits an outside diameter (OD) of: 13.72mm

Material: Forged Stainless Steel
Grade: 316

Standards:
BS3799, ANSI B16.11 MSS SP-83, MSS SP-95, MSS SP-97

Alternative terminology:
Forged Stainless Steel,Stainless Steel, Reducing Bush, Threaded, Screwed, , Fittings.
£ 48.09 48.09 GBP
DN25 X 8 (1" X 1/4" NB) NPT REDUCING BUSH SS 316
Side 1 threaded: 1" NPT Male
Side 1 suits an outside diameter (OD) of: 33.4mm
Side 2 threaded: 1/4" NPT Female
Side 2 suits suits an outside diameter (OD) of: 13.72mm

Material: Forged Stainless Steel
Grade: 316

Standards:
BS3799, ANSI B16.11 MSS SP-83, MSS SP-95, MSS SP-97

Alternative terminology:
Forged Stainless Steel,Stainless Steel, Reducing Bush, Threaded, Screwed, , Fittings.
£ 59.92 59.92 GBP
DN25 X 10 (1" X 3/8" 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: 3/8" BSPP Female
Suits an outside diameter (OD) of: 17.15mm
Material: Stainless
Grade: 316
£ 10.50 10.5 GBP
DN25 X 10 (1" X 3/8" 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: 3/8" BSPT Male
Suits an outside diameter (OD) of: 17.15mm
Material: Stainless
Grade: 316
£ 11.97 11.97 GBP
DN25 X 10 (1" X 3/8" NB) BSP 150# REDUCING SOCKET SS 316
Side One Thread: 1" BSP Female
Suits an outside diameter (OD) of: 33.4mm
Side Two Thread: 3/8" BSP Female
Suits an outside diameter (OD) of: 17.15mm
Material: Stainless
Grade: 316
£ 19.95 19.95 GBP
DN25 X 10 (1" X 3/8" NB) BSPT REDUCING BUSH SS 316
Side 1 threaded: 1" BSPT Male
Side 1 suits an outside diameter (OD) of: 33.4mm
Side 2 threaded: 3/8" BSPT Female
Side 2 suits suits an outside diameter (OD) of: 17.15mm

Material: Forged Stainless Steel
Grade: 316

Standards:
BS3799, ANSI B16.11 MSS SP-83, MSS SP-95, MSS SP-97

Alternative terminology:
Forged Stainless Steel,Stainless Steel, Reducing Bush, Threaded, Screwed, , Fittings.
£ 45.64 45.64 GBP
DN25 X 10 (1" X 3/8" NB) NPT REDUCING BUSH SS 316
Side 1 threaded: 1" NPT Male
Side 1 suits an outside diameter (OD) of: 33.4mm
Side 2 threaded: 3/8" NPT Female
Side 2 suits suits an outside diameter (OD) of: 17.15mm

Material: Forged Stainless Steel
Grade: 316

Standards:
BS3799, ANSI B16.11 MSS SP-83, MSS SP-95, MSS SP-97

Alternative terminology:
Forged Stainless Steel,Stainless Steel, Reducing Bush, Threaded, Screwed, , Fittings.
£ 47.18 47.18 GBP
DN25 X 15 (1" X 1/2" NB) BSP REDUCING HEX NIPPLE SS 316
Side 1 Thread: 1" NPT Male x Male
Suits an outside diameter (OD) of: 33.4mm
Side 2 Thread: 3/4" NPT Male x Male
Suits an outside diameter (OD) of: 21.3mm
Material: Forged Stainless Steel
Grade: 316

Standards:
BS3799, ANSI B16.11 MSS SP-83, MSS SP-95, MSS SP-97




Alternative terminology:
Reducing Heagon Nipple, Forged Stainless Steel, Stainless Steel, Threaded, Screwed, Fittings.
£ 113.75 113.75 GBP
DN25 X 15 (1" X 1/2" NB) BSP REDUCING HEX NIPPLE SS 316
Side 1 Thread: 1" BSPT Male x Male
Suits an outside diameter (OD) of: 33.4mm
Side 2 Thread: 3/4" BSPT Male x Male
Suits an outside diameter (OD) of: 21.3mm
Material: Forged Stainless Steel
Grade: 316

Standards:
BS3799, ANSI B16.11 MSS SP-83, MSS SP-95, MSS SP-97




Alternative terminology:
Reducing Heagon Nipple, Forged Stainless Steel, Stainless Steel, Threaded, Screwed, Fittings.
£ 108.08 108.08 GBP
DN25 X 15 (1" X 1/2" 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: 1/2" BSPP Female
Suits an outside diameter (OD) of: 21.3mm
Material: Stainless
Grade: 316
£ 9.17 9.17 GBP
DN25 X 15 (1" X 1/2" 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: 1/2" BSPT Male
Suits an outside diameter (OD) of: 21.3mm
Material: Stainless
Grade: 316
£ 11.97 11.97 GBP
DN25 X 15 (1" X 1/2" NB) BSP 150# REDUCING SOCKET SS 316
Side One Thread: 1" BSP Female
Suits an outside diameter (OD) of: 33.4mm
Side Two Thread: 1/2" BSP Female
Suits an outside diameter (OD) of: 21.3mm
Material: Stainless
Grade: 316
£ 19.95 19.95 GBP
DN25 X 15 (1" X 1/2" NB) BSPT REDUCING BUSH SS 316
Side 1 threaded: 1" BSPT Male
Side 1 suits an outside diameter (OD) of: 33.4mm
Side 2 threaded: 1/2" BSPT Female
Side 2 suits suits an outside diameter (OD) of: 21.3mm

Material: Forged Stainless Steel
Grade: 316

Standards:
BS3799, ANSI B16.11 MSS SP-83, MSS SP-95, MSS SP-97

Alternative terminology:
Forged Stainless Steel,Stainless Steel, Reducing Bush, Threaded, Screwed, , Fittings.
£ 46.83 46.83 GBP
DN25 X 15 (1" X 1/2" NB) BSPT REDUCING SOCKET SS 316
Side 1 threaded: 1" BSPT Female
Side 1 suits an outside diameter (OD) of: 33.4mm

Side 2 threaded: 1/2" BSPT Female
Side 2 suits an outside diameter (OD) of: 21.3mm

Material: Forged Stainless steel
Grade: 316

Standards:
Nominal Bore, Threaded, Screwed, 3000 psi (3K) High Pressure, Forged Stainless steel, BS3799, ANSI B16.11 MSS SP-83, MSS SP-95, MSS SP-97




Alternative terminology:
Reducer, Socket, Coupling, Reducing Socket, Coupling, Stainless Steel
Contact us for pricing 0.0 GBP
DN25 X 15 (1" X 1/2" NB) NPT REDUCING BUSH SS 316
Side 1 threaded: 1" NPT Male
Side 1 suits an outside diameter (OD) of: 33.4mm
Side 2 threaded: 1/2" NPT Female
Side 2 suits suits an outside diameter (OD) of: 21.3mm

Material: Forged Stainless Steel
Grade: 316

Standards:
BS3799, ANSI B16.11 MSS SP-83, MSS SP-95, MSS SP-97

Alternative terminology:
Forged Stainless Steel,Stainless Steel, Reducing Bush, Threaded, Screwed, , Fittings.
£ 47.95 47.95 GBP
DN25 X 15 (1" X 1/2" NB) NPT REDUCING SOCKET SS 316
Side 1 threaded: 1" NPT Female
Side 1 suits an outside diameter (OD) of: 33.4mm

Side 2 threaded: 1/2" NPT Female
Side 2 suits an outside diameter (OD) of: 21.3mm

Material: Forged Stainless steel
Grade: 316

Standards:
Nominal Bore, Threaded, Screwed, 3000 psi (3K) High Pressure, Forged Stainless steel, BS3799, ANSI B16.11 MSS SP-83, MSS SP-95, MSS SP-97




Alternative terminology:
Reducer, Socket, Coupling, Reducing Socket, Coupling, Stainless Steel
Contact us for pricing 0.0 GBP
DN25 X 15 (1" X 1/2" NB) NPT 150# REDUCING HEX BUSH SS 316
Side One Thread: 1" NPT Male
Suits an outside diameter (OD) of: 33.4mm
Side Two Thread: 1/2" NPT Female
Suits an outside diameter (OD) of: 21.3mm
Material: Stainless
Grade: 316
£ 15.61 15.61 GBP
DN25 X 15 (1" X 1/2" NB) NPT 150# REDUCING HEX NIPPLE SS 316
Side One Thread: 1" NPT Male
Suits an outside diameter (OD) of: 33.4mm
Side Two Thread: 1/2" NPT Male
Suits an outside diameter (OD) of: 21.3mm
Material: Stainless
Grade: 316
£ 16.59 16.59 GBP
DN25 X 15 (1" X 1/2" NB) NPT 150# REDUCING SOCKET SS 316
Side One Thread: 1" NPT Female
Suits an outside diameter (OD) of: 33.4mm
Side Two Thread: 1/2" NPT Female
Suits an outside diameter (OD) of: 21.3mm
Material: Stainless
Grade: 316
£ 22.89 22.89 GBP
DN25 X 15 (1" X 1/2" NB) SW 150# REDUCING SOCKET SS 316
Side One Connection: 1" SW (Socket Weld)
Suits an outside diameter (OD) of: 33.4mm
Side Two Connection: 1/2" SW (Socket Weld)
Suits an outside diameter (OD) of: 21.3mm
Material: Stainless
Grade: 316
£ 23.31 23.31 GBP
DN25 X 20 (1" X 3/4" NB) BSP REDUCING HEX NIPPLE SS 316
Side 1 Thread: 1" NPT Male x Male
Suits an outside diameter (OD) of: 33.4mm
Side 2 Thread: 3/4" NPT Male x Male
Suits an outside diameter (OD) of: 26.9mm
Material: Forged Stainless Steel
Grade: 316

Standards:
BS3799, ANSI B16.11 MSS SP-83, MSS SP-95, MSS SP-97




Alternative terminology:
Reducing Heagon Nipple, Forged Stainless Steel, Stainless Steel, Threaded, Screwed, Fittings.
£ 122.22 122.22 GBP
DN25 X 20 (1" X 3/4" NB) BSP REDUCING HEX NIPPLE SS 316
Side 1 Thread: 1" BSPT Male x Male
Suits an outside diameter (OD) of: 33.4mm
Side 2 Thread: 3/4" BSPT Male x Male
Suits an outside diameter (OD) of: 26.9mm
Material: Forged Stainless Steel
Grade: 316

Standards:
BS3799, ANSI B16.11 MSS SP-83, MSS SP-95, MSS SP-97




Alternative terminology:
Reducing Heagon Nipple, Forged Stainless Steel, Stainless Steel, Threaded, Screwed, Fittings.
£ 109.41 109.41 GBP