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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

DN40 X 20 (1.1/2" X 3/4" NB) NPT 150# REDUCING HEX BUSH SS 316
Side One Thread: 1.1/2" NPT Male
Suits an outside diameter (OD) of: 48.3mm
Side Two Thread: 3/4" NPT Female
Suits an outside diameter (OD) of: 26.9mm
Material: Stainless
Grade: 316
£ 30.73 30.73 GBP
DN40 X 20 (1.1/2" X 3/4" NB) NPT 150# REDUCING HEX NIPPLE SS 316
Side One Thread: 1.1/2" BSPP Female
Suits an outside diameter (OD) of: 48.3mm
Side Two Thread: 3/4" BSPP Female
Suits an outside diameter (OD) of: 26.9mm
Material: Stainless
Grade: 316
£ 32.62 32.62 GBP
DN40 X 20 (1.1/2" X 3/4" NB) SW 150# REDUCING SOCKET SS 316
Side One Connection: 1.1/2" BSPP Female
Suits an outside diameter (OD) of: 48.3mm
Side Two Connection: 3/4" BSPP Female
Suits an outside diameter (OD) of: 26.9mm
Material: Stainless
Grade: 316
£ 39.83 39.83 GBP
DN40 X 25 (1.1/2" X 1" NB) BSP REDUCING HEX NIPPLE SS 316
Side 1 Thread: 1.1/2" NPT Male x Male
Suits an outside diameter (OD) of: 48.3mm
Side 2 Thread: 1" NPT Male x Male
Suits an outside diameter (OD) of: 33.4mm
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.
£ 281.33 281.33 GBP
DN40 X 25 (1.1/2" X 1" NB) BSP REDUCING HEX NIPPLE SS 316
Side 1 Thread: 1.1/2" BSPT Male x Male
Suits an outside diameter (OD) of: 48.3mm
Side 2 Thread: 1" BSPT Male x Male
Suits an outside diameter (OD) of: 33.4mm
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.
£ 260.26 260.26 GBP
DN40 X 25 (1.1/2" X 1" NB) BSP 150# REDUCING HEX BUSH SS 316
Side One Thread: 1.1/2" BSPT Male
Suits an outside diameter (OD) of: 48.3mm
Side Two Thread: 1" BSPP Female
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316
£ 23.17 23.17 GBP
DN40 X 25 (1.1/2" X 1" NB) BSP 150# REDUCING HEX NIPPLE SS 316
Side One Thread: 1.1/2" BSPP Female
Suits an outside diameter (OD) of: 48.3mm
Side Two Thread: 1" BSPP Female
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316
£ 23.94 23.94 GBP
DN40 X 25 (1.1/2" X 1" NB) BSP 150# REDUCING SOCKET SS 316
Side One Thread: 1.1/2" BSPP Female
Suits an outside diameter (OD) of: 48.3mm
Side Two Thread: 1" BSPP Female
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316
£ 37.24 37.24 GBP
DN40 X 25 (1.1/2" X 1" NB) BSPT REDUCING BUSH SS 316
Side 1 threaded: 1.1/2" BSPT Male
Side 1 suits an outside diameter (OD) of: 48.3mm
Side 2 threaded: 1" BSPT Female
Side 2 suits suits an outside diameter (OD) of: 33.4mm

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.
£ 87.71 87.71 GBP
DN40 X 25 (1.1/2" X 1" NB) BSPT REDUCING SOCKET SS 316
Side 1 threaded: 1.1/2" BSPT Female
Suits 1 suits an outside diameter (OD) of: 48.3mm
Side 2 threaded: 1" BSPT Female
Side 2 suits suits an outside diameter (OD) of: 33.4mm

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
DN40 X 25 (1.1/2" X 1" NB) NPT REDUCING BUSH SS 316
Side 1 threaded: 1.1/2" NPT Male
Side 1 suits an outside diameter (OD) of: 48.3mm
Side 2 threaded: 1" NPT Female
Side 2 suits suits an outside diameter (OD) of: 33.4mm

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.
£ 89.95 89.95 GBP
DN40 X 25 (1.1/2" X 1" NB) NPT REDUCING SOCKET SS 316
Side 1 threaded: 1.1/2" NPT Female
Suits 1 suits an outside diameter (OD) of: 48.3mm
Side 2 threaded: 1" NPT Female
Side 2 suits suits an outside diameter (OD) of: 33.4mm

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
DN40 X 25 (1.1/2" X 1" NB) NPT 150# REDUCING HEX BUSH SS 316
Side One Thread: 1.1/2" NPT Male
Suits an outside diameter (OD) of: 48.3mm
Side Two Thread: 1" NPT Female
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316
£ 30.73 30.73 GBP
DN40 X 25 (1.1/2" X 1" NB) NPT 150# REDUCING HEX NIPPLE SS 316
Side One Thread: 1.1/2" BSPP Female
Suits an outside diameter (OD) of: 48.3mm
Side Two Thread: 1" BSPP Female
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316
£ 34.79 34.79 GBP
DN40 X 25 (1.1/2" X 1" NB) NPT 150# REDUCING SOCKET SS 316
Side One Thread: 1.1/2" NPTP Female
Suits an outside diameter (OD) of: 48.3mm
Side Two Thread: 1" NPTP Female
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316
£ 38.64 38.64 GBP
DN40 X 25 (1.1/2" X 1" NB) SW 150# REDUCING SOCKET SS 316
Side One Connection: 1.1/2" BSPP Female
Suits an outside diameter (OD) of: 48.3mm
Side Two Connection: 1" BSPP Female
Suits an outside diameter (OD) of: 33.4mm
Material: Stainless
Grade: 316
£ 30.59 30.59 GBP
DN40 X 32 (1.1/2" X 1.1/4" NB) BSP REDUCING HEX NIPPLE SS 316
Side 1 Thread: 1.1/2" NPT Male x Male
Suits an outside diameter (OD) of: 48.3mm
Side 2 Thread: 1.1/4" NPT Male x Male
Suits an outside diameter (OD) of: 42.4mm
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.
£ 184.59 184.59 GBP
DN40 X 32 (1.1/2" X 1.1/4" NB) BSP REDUCING HEX NIPPLE SS 316
Side 1 Thread: 1.1/2" BSPT Male x Male
Suits an outside diameter (OD) of: 48.3mm
Side 2 Thread: 1.1/4" BSPT Male x Male
Suits an outside diameter (OD) of: 42.4mm
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.
£ 194.04 194.04 GBP
DN40 X 32 (1.1/2" X 1.1/4" NB) BSP 150# REDUCING HEX BUSH SS 316
Side One Thread: 1.1/2" BSPT Male
Suits an outside diameter (OD) of: 48.3mm
Side Two Thread: 1.1/4" BSPP Female
Suits an outside diameter (OD) of: 42.4mm
Material: Stainless
Grade: 316
£ 19.67 19.67 GBP
DN40 X 32 (1.1/2" X 1.1/4" NB) BSP 150# REDUCING HEX NIPPLE SS 316
Side One Thread: 1.1/2" BSPP Female
Suits an outside diameter (OD) of: 48.3mm
Side Two Thread: 1.1/4" BSPP Female
Suits an outside diameter (OD) of: 42.4mm
Material: Stainless
Grade: 316
£ 23.94 23.94 GBP
DN40 X 32 (1.1/2" X 1.1/4" NB) BSP 150# REDUCING SOCKET SS 316
Side One Thread: 1.1/2" BSPP Female
Suits an outside diameter (OD) of: 48.3mm
Side Two Thread: 1.1/4" BSPP Female
Suits an outside diameter (OD) of: 42.4mm
Material: Stainless
Grade: 316
£ 37.24 37.24 GBP
DN40 X 32 (1.1/2" X 1.1/4" NB) BSPT REDUCING BUSH SS 316
Side 1 threaded: 1.1/2" BSPT Male
Side 1 suits an outside diameter (OD) of: 48.3mm
Side 2 threaded: 1.1/4" BSPT Female
Side 2 suits suits an outside diameter (OD) of: 42.4mm

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.
£ 80.85 80.85 GBP
DN40 X 32 (1.1/2" X 1.1/4" NB) BSPT REDUCING SOCKET SS 316
Side 1 threaded: 1.1/2" BSPT Female
Suits 1 suits an outside diameter (OD) of: 48.3mm
Side 2 threaded: 1.1/4" BSPT Female
Side 2 suits suits an outside diameter (OD) of: 42.4mm

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
DN40 X 32 (1.1/2" X 1.1/4" NB) NPT REDUCING BUSH SS 316
Side 1 threaded: 1.1/2" NPT Male
Side 1 suits an outside diameter (OD) of: 48.3mm
Side 2 threaded: 1.1/4" NPT Female
Side 2 suits suits an outside diameter (OD) of: 42.4mm

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.
£ 87.92 87.92 GBP
DN40 X 32 (1.1/2" X 1.1/4" NB) NPT REDUCING SOCKET SS 316
Side 1 threaded: 1.1/2" NPT Female
Suits 1 suits an outside diameter (OD) of: 48.3mm
Side 2 threaded: 1.1/4" NPT Female
Side 2 suits suits an outside diameter (OD) of: 42.4mm

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
DN40 X 32 (1.1/2" X 1.1/4" NB) NPT 150# REDUCING HEX BUSH SS 316
Side One Thread: 1.1/2" NPT Male
Suits an outside diameter (OD) of: 48.3mm
Side Two Thread: 1.1/4" NPT Female
Suits an outside diameter (OD) of: 42.4mm
Material: Stainless
Grade: 316
£ 30.94 30.94 GBP
DN40 X 32 (1.1/2" X 1.1/4" NB) NPT 150# REDUCING HEX NIPPLE SS 316
Side One Thread: 1.1/2" BSPP Female
Suits an outside diameter (OD) of: 48.3mm
Side Two Thread: 1.1/4" BSPP Female
Suits an outside diameter (OD) of: 42.4mm
Material: Stainless
Grade: 316
£ 24.64 24.64 GBP
DN40 X 32 (1.1/2" X 1.1/4" NB) NPT 150# REDUCING SOCKET SS 316
Side One Thread: 1.1/2" NPTP Female
Suits an outside diameter (OD) of: 48.3mm
Side Two Thread: 1.1/4" NPTP Female
Suits an outside diameter (OD) of: 42.4mm
Material: Stainless
Grade: 316
£ 27.79 27.79 GBP
DN40 X 32 (1.1/2" X 1.1/4" NB) SW 150# REDUCING SOCKET SS 316
Side One Connection: 1.1/2" BSPP Female
Suits an outside diameter (OD) of: 48.3mm
Side Two Connection: 1.1/4" BSPP Female
Suits an outside diameter (OD) of: 42.4mm
Material: Stainless
Grade: 316
£ 41.86 41.86 GBP
DN40 X DN15 (1½" X ½" NB) SCHEDULE 40S A403 SEAMLESS CONCENTRIC REDUCER SS 304
Outside Diameter (OD): 48 X 21mm
Wall Thickness: 3.68 X 2.77mm
Length: 64mm
Contact us for pricing 0.0 GBP
DN40 X DN15 (1½" X ½" NB) SCHEDULE 40S A403 SEAMLESS CONCENTRIC REDUCER SS 316
Outside Diameter (OD): 48 X 21mm
Wall Thickness: 3.68 X 2.77mm
Length: 64mm
Contact us for pricing 0.0 GBP
DN40 X DN15 (1½" X ½" NB) SCHEDULE 40S A403 SEAMLESS ECCENTRIC REDUCER SS 304
Outside Diameter (OD): 48 X 21mm
Wall Thickness: 3.68 X 2.77mm
Length: 64mm
Contact us for pricing 0.0 GBP
DN40 X DN15 (1½" X ½" NB) SCHEDULE 40S A403 SEAMLESS ECCENTRIC REDUCER SS 316
Outside Diameter (OD): 48 X 21mm
Wall Thickness: 3.68 X 2.77mm
Length: 64mm
Contact us for pricing 0.0 GBP
DN40 X DN15 (1½" X ½" NB) SCHEDULE 40S A403 WELDED CONCENTRIC REDUCER SS 304
Outside Diameter (OD): 48 X 21mm
Wall Thickness: 3.68 X 2.77mm
Length: 64mm
£ 21.49 21.49 GBP
DN40 X DN15 (1½" X ½" NB) SCHEDULE 40S A403 WELDED CONCENTRIC REDUCER SS 316
Outside Diameter (OD): 48 X 21mm
Wall Thickness: 3.68 X 2.77mm
Length: 64mm
£ 31.08 31.08 GBP
DN40 X DN15 (1½" X ½" NB) SCHEDULE 40S A403 WELDED ECCENTRIC REDUCER SS 304
Outside Diameter (OD): 48 X 21mm
Wall Thickness: 3.68 X 2.77mm
Length: 64mm
£ 71.26 71.26 GBP
DN40 X DN15 (1½" X ½" NB) SCHEDULE 40S A403 WELDED ECCENTRIC REDUCER SS 316
Outside Diameter (OD): 48 X 21mm
Wall Thickness: 3.68 X 2.77mm
Length: 64mm
£ 41.30 41.3 GBP
DN40 X DN20 (1½" X ¾" NB) SCHEDULE 40S A403 SEAMLESS CONCENTRIC REDUCER SS 304
Outside Diameter (OD): 48 X 27mm
Wall Thickness: 3.68 X 2.87mm
Length: 64mm
Contact us for pricing 0.0 GBP
DN40 X DN20 (1½" X ¾" NB) SCHEDULE 40S A403 SEAMLESS CONCENTRIC REDUCER SS 316
Outside Diameter (OD): 48 X 27mm
Wall Thickness: 3.68 X 2.87mm
Length: 64mm
Contact us for pricing 0.0 GBP
DN40 X DN20 (1½" X ¾" NB) SCHEDULE 40S A403 SEAMLESS ECCENTRIC REDUCER SS 304
Outside Diameter (OD): 48 X 27mm
Wall Thickness: 3.68 X 2.87mm
Length: 64mm
Contact us for pricing 0.0 GBP