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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

DN100 (4" NB) PN6 RF BLIND FLANGE SS 304
Flange overall diameter: 210mm (D)
PCD: 170mm (K)
Bolt Holes: 8 off 18mm diameter (L)
Flange Thickness: 18mm (C4)
Diameter of Raised Face (RF): 148mm (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:
Blank Flange, Blind, Stainless Steel, Stainless Steel, Raised Faced, RF Blind

Part of our Flanges and Flanged Connections Range
£ 246.12 246.12 GBP
DN100 (4" NB) PN6 RF BLIND FLANGE SS 316
Flange overall diameter: 210mm (D)
PCD: 170mm (K)
Bolt Holes: 8 off 18mm diameter (L)
Flange Thickness: 18mm (C4)
Diameter of Raised Face (RF): 148mm (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:
Blank Flange, Blind, Stainless Steel, Stainless Steel, Raised Faced, RF Blind

Part of our Flanges and Flanged Connections Range
£ 215.81 215.81 GBP
DN100 (4" NB) PN6 RF BSPP THREADED FLANGE SS 304
Flange outside diameter: 210mm (D)
Flange thickness: 16mm (C2)
Pitch Circle Diameter (PCD): 170mm (K)
Flange hub height: 34mm (H1)
Raised Face Height: 3mm (f1)
BSPP Thread: 4"
Bolt Holes: 8 off M16 bolts
Material: Stainless Steel
Grade: 304

Standards: EN 1092-1
Pressure Rating: PN6
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Threaded Flange, Screwed Flange, BSPP, Stainless Steel, SS Steel, Bossed, PN6

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN100 (4" NB) PN6 RF BSPP THREADED FLANGE SS 316
Flange outside diameter: 210mm (D)
Flange thickness: 16mm (C2)
Pitch Circle Diameter (PCD): 170mm (K)
Flange hub height: 34mm (H1)
Raised Face Height: 3mm (f1)
BSPP Thread: 4"
Bolt Holes: 8 off M16 bolts
Material: Stainless Steel
Grade: 316

Standards: EN 1092-1
Pressure Rating: PN6
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Threaded Flange, Screwed Flange, BSPP, Stainless Steel, SS Steel, Bossed, PN6

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN100 (4" NB) PN6 RF SLIP ON PLATE FLANGE SS 304
Flange inside diameter of: 116.0mm (B1)
Flange overall diameter: 210mm (D)
PCD: 170mm (K)
Bolt Holes: 8 off 18mm diameter (L)
Flange Thickness: 18mm (C1)
Diameter of Raised Face (RF): 148mm (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
DN100 (4" NB) PN6 RF SLIP ON PLATE FLANGE SS 316
Flange inside diameter of: 116.0mm (B1)
Flange overall diameter: 210mm (D)
PCD: 170mm (K)
Bolt Holes: 8 off 18mm diameter (L)
Flange Thickness: 18mm (C1)
Diameter of Raised Face (RF): 148mm (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
DN100 (4" NB) SCHEDULE 10S A403 SEAMLESS EQUAL TEE SS 304
Outside Diameter (OD): 114.3mm
Wall Thickness: 6.02mm
Centre to End: 104.8mm
Schedule: 10S
Weight: 5.72kg

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
Contact us for pricing 0.0 GBP
DN100 (4" NB) SCHEDULE 10S A403 SEAMLESS EQUAL TEE SS 316
Outside Diameter (OD): 114.3mm
Wall Thickness: 6.02mm
Centre to End: 104.8mm
Schedule: 10S
Weight: 5.72kg

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
Contact us for pricing 0.0 GBP
DN100 (4" NB) SCHEDULE 10S A403 SEAMLESS LONG RADIUS 45 DEG ELBOW SS 304
Outside Diameter (OD): 114.3mm
Wall Thickness: 3.05mm

Schedule: A403 Seamless
Weight: 2.62kg

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
Contact us for pricing 0.0 GBP
DN100 (4" NB) SCHEDULE 10S A403 SEAMLESS LONG RADIUS 45 DEG ELBOW SS 316
Outside Diameter (OD): 114.3mm
Wall Thickness: 3.05mm

Schedule: A403 Seamless
Weight: 2.62kg

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
Contact us for pricing 0.0 GBP
DN100 (4" NB) SCHEDULE 10S A403 SEAMLESS LONG RADIUS 90 DEG ELBOW SS 304
Outside Diameter (OD): 114.3mm
Wall Thickness: 3.05mm
Centre to Face: 152.4mm
Schedule: A403 Seamless
Weight: 4.2kg

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
DN100 (4" NB) SCHEDULE 10S A403 SEAMLESS LONG RADIUS 90 DEG ELBOW SS 316
Outside Diameter (OD): 114.3mm
Wall Thickness: 3.05mm
Centre to Face: 152.4mm
Schedule: A403 Seamless
Weight: 4.2kg

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
DN100 (4" NB) SCHEDULE 10S A403 SEAMLESS SHORT RADIUS 90 DEG ELBOW SS 304
Outside Diameter (OD): 114.3mm
Wall Thickness: 3.05mm
Centre to Face: 101.6mm
Schedule: A403 Seamless
Weight: 2.62kg

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
DN100 (4" NB) SCHEDULE 10S A403 SEAMLESS SHORT RADIUS 90 DEG ELBOW SS 316
Outside Diameter (OD): 114.3mm
Wall Thickness: 3.05mm
Centre to Face: 101.6mm
Schedule: A403 Seamless
Weight: 2.62kg

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
DN100 (4" NB) SCHEDULE 10S A403 WELDED EQUAL TEE SS 304
Outside Diameter (OD): 114.3mm
Wall Thickness: 6.02mm
Centre to End: 104.8mm
Schedule: 10S
Weight: 5.72kg

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
£ 137.13 137.13 GBP
DN100 (4" NB) SCHEDULE 10S A403 WELDED EQUAL TEE SS 316
Outside Diameter (OD): 114.3mm
Wall Thickness: 6.02mm
Centre to End: 104.8mm
Schedule: 10S
Weight: 5.72kg

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
£ 197.33 197.33 GBP
DN100 (4" NB) SCHEDULE 10S A403 WELDED LONG RADIUS 45 DEG ELBOW SS 304
Outside Diameter (OD): 114.3mm
Wall Thickness: 3.05mm

Schedule: A403 Welded
Weight: 2.62kg

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
£ 71.05 71.05 GBP
DN100 (4" NB) SCHEDULE 10S A403 WELDED LONG RADIUS 45 DEG ELBOW SS 316
Outside Diameter (OD): 114.3mm
Wall Thickness: 3.05mm

Schedule: A403 Welded
Weight: 2.62kg

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
£ 92.40 92.4 GBP
DN100 (4" NB) SCHEDULE 10S A403 WELDED LONG RADIUS 90 DEG ELBOW SS 304
Outside Diameter (OD): 114.3mm
Wall Thickness: 3.05mm
Centre to Face: 152.4mm
Schedule: A403 Welded
Weight: 4.2kg

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
£ 93.94 93.94 GBP
DN100 (4" NB) SCHEDULE 10S A403 WELDED LONG RADIUS 90 DEG ELBOW SS 316
Outside Diameter (OD): 114.3mm
Wall Thickness: 3.05mm
Centre to Face: 152.4mm
Schedule: A403 Welded
Weight: 4.2kg

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
£ 115.50 115.5 GBP
DN100 (4" NB) SCHEDULE 10S A403 WELDED SHORT RADIUS 90 DEG ELBOW SS 304
Outside Diameter (OD): 114.3mm
Wall Thickness: 3.05mm
Centre to Face: 101.6mm
Schedule: A403 Welded
Weight: 2.62kg

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
£ 71.05 71.05 GBP
DN100 (4" NB) SCHEDULE 10S A403 WELDED SHORT RADIUS 90 DEG ELBOW SS 316
Outside Diameter (OD): 114.3mm
Wall Thickness: 3.05mm
Centre to Face: 101.6mm
Schedule: A403 Welded
Weight: 2.62kg

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
£ 108.29 108.29 GBP
DN100 (4" NB) SCHEDULE 10S ASA150 WELD NECK FLANGE SS 304
Outside diameter (O): 228.6mm
Flange thickness (C): 23.8mm
Hub length (X): 114.3mm
Neck height (A): 105.0mm
Pitch circle diameter (K): 190.5mm
Hub base diameter (Y): 76.2mm
Raised face height (RF): 15.5mm
Raised face diameter (R): 157.2mm
Number of bolt holes: 8
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
£ 429.03 429.03 GBP
DN100 (4" NB) SCHEDULE 10S ASA150 WELD NECK FLANGE SS 316
Outside diameter (O): 228.6mm
Flange thickness (C): 23.8mm
Hub length (X): 114.3mm
Neck height (A): 105.0mm
Pitch circle diameter (K): 190.5mm
Hub base diameter (Y): 76.2mm
Raised face height (RF): 15.5mm
Raised face diameter (R): 157.2mm
Number of bolt holes: 8
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
£ 381.43 381.43 GBP
DN100 (4" NB) SCHEDULE 10S ASA300 WELD NECK FLANGE SS 304
Outside diameter (O): 254.0mm
Flange thickness (C): 31.7mm
Hub height (X): 146.0mm
Length through hub (A): 114.3mm
Bolt circle diameter (K): 203.2mm
Overall height (Y): 85.8mm
Raised face thickness (RF): 1.5mm
Bore (B): 157.2mm
Number of bolt holes: 8
Bolt hole diameter: 22.3mm
Approx. weight: 11.9kg

Part of our Flanges and Flanged Connections Range
Contact us for pricing 0.0 GBP
DN100 (4" NB) SCHEDULE 10S ASA300 WELD NECK FLANGE SS 316
Outside diameter (O): 254.0mm
Flange thickness (C): 31.7mm
Hub height (X): 146.0mm
Length through hub (A): 114.3mm
Bolt circle diameter (K): 203.2mm
Overall height (Y): 85.8mm
Raised face thickness (RF): 1.5mm
Bore (B): 157.2mm
Number of bolt holes: 8
Bolt hole diameter: 22.3mm
Approx. weight: 11.9kg

Part of our Flanges and Flanged Connections Range
£ 962.15 962.15 GBP
DN100 (4" NB) SCHEDULE 10s STAINLESS SEAMLESS PIPE 304
Outside Diameter (OD): 114.3mm
Wall Thickness (WT): 3.05mm (Sch10)
Material: Stainless
Grade: 304
Standards: ASTM A312
Standard Length: 6 meter Random
Weight Per Meter: 8.42kg
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
DN100 (4" NB) SCHEDULE 10s STAINLESS WELDED PIPE 304
Outside Diameter (OD): 114.3mm
Wall Thickness (WT): 3.05mm (Sch10)
Material: Stainless
Grade: 304
Standards: ASTM A312
Random Length: 6 meter Random
Weight Per Meter: 8.42kg
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
£ 212.17 212.17 GBP
DN100 (4" NB) SCHEDULE 10s STAINLESS WELDED PIPE 316
Outside Diameter (OD): 114.3mm
Wall Thickness (WT): 3.05mm (Sch10)
Material: Stainless
Grade: 316
Standards: ASTM A312
Standard Length: 6 meter Random
Weight Per Meter: 8.42kg
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
£ 245.70 245.7 GBP
DN100 (4" NB) SCHEDULE 10s WELDED ELBOW 90° SS 316
Outside Diameter (OD): 114.3mm
Wall Thickness (WT): 3.05mm
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
£ 147.00 147.0 GBP
DN100 (4" NB) SCHEDULE 40S A403 SEAMLESS EQUAL TEE SS 304
Outside Diameter (OD): 114.3mm
Wall Thickness: 6.02mm
Centre to End: 104.8mm
Schedule: 40s
Weight: 5.72kg

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
£ 241.99 241.99 GBP
DN100 (4" NB) SCHEDULE 40S A403 SEAMLESS EQUAL TEE SS 316
Outside Diameter (OD): 114.3mm
Wall Thickness: 6.02mm
Centre to End: 104.8mm
Schedule: 40s
Weight: 5.72kg

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
£ 358.47 358.47 GBP
DN100 (4" NB) SCHEDULE 40S A403 SEAMLESS LONG RADIUS 90 DEG ELBOW SS 304
Outside Diameter (OD): 114.3mm
Wall Thickness: 6.02mm
Centre to Face: 152.4mm
Schedule: A403 Seamless
Weight: 4.2kg

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
DN100 (4" NB) SCHEDULE 40S A403 SEAMLESS LONG RADIUS 90 DEG ELBOW SS 316
Outside Diameter (OD): 114.3mm
Wall Thickness: 6.02mm
Centre to Face: 152.4mm
Schedule: A403 Seamless
Weight: 4.2kg

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
DN100 (4" NB) SCHEDULE 40S A403 SEAMLESS SHORT RADIUS 90 DEG ELBOW SS 304
Outside Diameter (OD): 114.3mm
Wall Thickness: 6.02mm
Centre to Face: 101.6mm
Schedule: A403 Seamless
Weight: 2.62kg

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
DN100 (4" NB) SCHEDULE 40S A403 SEAMLESS SHORT RADIUS 90 DEG ELBOW SS 316
Outside Diameter (OD): 114.3mm
Wall Thickness: 6.02mm
Centre to Face: 101.6mm
Schedule: A403 Seamless
Weight: 2.62kg

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
DN100 (4" NB) SCHEDULE 40S A403 WELDED EQUAL TEE SS 304
Outside Diameter (OD): 114.3mm
Wall Thickness: 6.02mm
Centre to End: 104.8mm
Schedule: 40s
Weight: 5.72kg

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
£ 241.99 241.99 GBP
DN100 (4" NB) SCHEDULE 40S A403 WELDED EQUAL TEE SS 316
Outside Diameter (OD): 114.3mm
Wall Thickness: 6.02mm
Centre to End: 104.8mm
Schedule: 40s
Weight: 5.72kg

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
£ 358.47 358.47 GBP
DN100 (4" NB) SCHEDULE 40S A403 WELDED LONG RADIUS 45 DEG ELBOW SS 304
Outside Diameter (OD): 114.3mm
Wall Thickness: 6.02mm

Schedule: A403 Welded
Weight: 2.62kg

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
£ 131.60 131.6 GBP
DN100 (4" NB) SCHEDULE 40S A403 WELDED LONG RADIUS 45 DEG ELBOW SS 316
Outside Diameter (OD): 114.3mm
Wall Thickness: 6.02mm

Schedule: A403 Welded
Weight: 2.62kg

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
£ 185.15 185.15 GBP