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Flanges

Steel Flanges – EN1092-1 & ANSI/ASME B16.5

Integraflow offers a full range of carbon steel flanges to both BS EN1092-1 (BS4504) and ANSI/ASME B16.5standards, including Plate and Bossed (PN6–PN40) and Forged Class 150 to 2500 flanges in sizes from ½” to 48” (15mm to 1200mm), manufactured from S235JR, ASTM A105N, A350 LF2, and A694, with optional custom machining for taper bores, special drilling and tapping, and bolt hole modification available to suit your system requirements.

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Flanges

DN700 PN25 RF SLIP ON PLATE FLANGE CS S235JR
Flange inside diameter of: 717.0mm (B1)
Flange overall diameter: 960mm (D)
PCD: 875mm (K)
Bolt Holes: 24 off 42mm diameter (L)
Flange Thickness: 85mm (C1)
Diameter of Raised Face (RF): 775mm (D1)
Height of raised face: 5mm (F1)
Material: Mild Steel
Grade: S235 JR
Standards: EN1092-1
Flange Face: Raised Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Mild Steel, Carbon Steel, Flat Faced, FFSO
Contact us for pricing 0.0 GBP
DN800 (32" NB) PN10 FF BLIND FLANGE CS S235 JR
Flange OD (D): 1015mm
Drilling (No. x Bolt Holes x L): 24 x M30 x 33mm
Pitch circle diameter (K): 950mm
Flange thickness (C4): 56mm
Material: S235 JR
Rating: PN10
Type: Blind flange (EN1092-1 Type 05)

Standards: EN1092-1
Flange Face: Flat Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Blank Flange, Blind, Mild Steel, Carbon Steel, Flat Faced, FF Blind
Contact us for pricing 0.0 GBP
DN800 (32" NB) PN16 FF BLIND FLANGE CS S235 JR
Flange OD (D): 1025mm
Drilling (No. x Bolt Hole x L): 24 x M36 x 39mm
Pitch circle diameter (K): 950mm
Flange thickness (C1): 74mm
Raised face diameter (D1): 880mm
Raised face height (F1): 5mm
Material: S235 JR
Rating: PN16
Type: Blind flange (EN1092-1 Type 05)

Standards: EN1092-1
Flange Face: Flat Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Blank Flange, Blind, Mild Steel, Carbon Steel, Flat Faced, FF Blind
£ 3,850.00 3850.0 GBP
DN800 (32" NB) PN25 FF BLIND FLANGE CS S235 JR
Flange OD (D): 1085mm
Drilling (No. x Bolt Hole x L): 24 x M45 x 48mm
Pitch circle diameter (K): 990mm
Flange thickness (C1): 95mm
Raised face diameter (D1): 880mm
Raised face height (F1): 5mm
Material: S235 JR
Rating: PN25
Type: Blind flange (EN1092-1 Type 05)

Standards: EN1092-1
Flange Face: Flat Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Blank Flange, Blind, Mild Steel, Carbon Steel, Flat Faced, FF Blind
Contact us for pricing 0.0 GBP
DN800 (32" NB) PN6 FF BLIND FLANGE CS S235 JR
Flange overall diameter: 975mm (D)
PCD: 918mm (K)
Bolt Holes: 28 off 30mm diameter (L)
Flange Thickness: 44mm (C4)
Diameter of Flat Face (RF): 885mm (D1)
Height of Flat Face: 5mm (F1)
Material: Mild Steel
Grade: S235 JR
Standards: EN1092-1
Flange Face: Flat Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Blank Flange, Blind, Mild Steel, Carbon Steel, Flat Faced, FF Blind
Contact us for pricing 0.0 GBP
DN800 (32" NB) PN6 RF SLIP ON PLATE FLANGE CS S235 JR
Flange inside diameter of: 818.0mm (B1)
Flange overall diameter: 975mm (D)
PCD: 918mm (K)
Bolt Holes: 28 off 30mm diameter (L)
Flange Thickness: 44mm (C1)
Diameter of Raised Face (RF): 885mm (D1)
Height of raised face: 5mm (F1)
Material: Mild Steel
Grade: S235 JR
Standards: EN1092-1
Flange Face: Raised Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Mild Steel, Carbon Steel, Raised Faced, RFSO
Contact us for pricing 0.0 GBP
DN800 PN10 RF SLIP ON PLATE FLANGE CS S235JR
Flange inside diameter of: 818.0mm (B1)
Flange overall diameter: 1015mm (D)
PCD: 950mm (K)
Bolt Holes: 24 off 30mm diameter (L)
Flange Thickness: 56mm (C1)
Diameter of Raised Face (RF): 880mm (D1)
Height of raised face: 5mm (F1)
Material: Mild Steel
Grade: S235 JR
Standards: EN1092-1
Flange Face: Raised Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Mild Steel, Carbon Steel, Flat Faced, FFSO
Contact us for pricing 0.0 GBP
DN800 PN16 RF BOSSED SLIP ON FLANGE CS S235JR
Flange outside diameter: 1025mm (D)
Flange inside diameter: 818.0mm (B1)
Flange thickness (C2): 45mm
Pitch Circle Diameter (PCD): 950mm (K)
Hub height: 864mm (H1)
Neck diameter: 12mm (N2)
Raised Face Diameter: 5mm (d1)
Height of Raised Face: 24mm (f1)
Bolt Holes: M36 off 139.6mm diameter (L)
Material: Mild Steel
Grade: S235 JR
Standards: EN1092-1
Flange Face: Raised Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Bossed Slip on Flange, Weld on, Mild Steel, Carbon Steel, Raised Faced, SOB
Contact us for pricing 0.0 GBP
DN800 PN16 RF SLIP ON PLATE FLANGE CS S235JR
Flange inside diameter of: 818.0mm (B1)
Flange overall diameter: 1025mm (D)
PCD: 950mm (K)
Bolt Holes: 24 off 39mm diameter (L)
Flange Thickness: 74mm (C1)
Diameter of Raised Face (RF): 880mm (D1)
Height of raised face: 5mm (F1)
Material: Mild Steel
Grade: S235 JR
Standards: EN1092-1
Flange Face: Raised Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Mild Steel, Carbon Steel, Raised Faced, RFSO
£ 1,575.00 1575.0 GBP
DN800 PN25 RF SLIP ON PLATE FLANGE CS S235JR
Flange inside diameter of: 818.0mm (B1)
Flange overall diameter: 1085mm (D)
PCD: 990mm (K)
Bolt Holes: 24 off 48mm diameter (L)
Flange Thickness: 95mm (C1)
Diameter of Raised Face (RF): 880mm (D1)
Height of raised face: 5mm (F1)
Material: Mild Steel
Grade: S235 JR
Standards: EN1092-1
Flange Face: Raised Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Mild Steel, Carbon Steel, Flat Faced, FFSO
Contact us for pricing 0.0 GBP
DN900 (36" NB) PN10 FF BLIND FLANGE CS S235 JR
Flange OD (D): 1115mm
Drilling (No. x Bolt Holes x L): 28 x M30 x 33mm
Pitch circle diameter (K): 1050mm
Flange thickness (C4): 62mm
Material: S235 JR
Rating: PN10
Type: Blind flange (EN1092-1 Type 05)

Standards: EN1092-1
Flange Face: Flat Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Blank Flange, Blind, Mild Steel, Carbon Steel, Flat Faced, FF Blind
Contact us for pricing 0.0 GBP
DN900 (36" NB) PN16 FF BLIND FLANGE CS S235 JR
Flange OD (D): 1125mm
Drilling (No. x Bolt Hole x L): 28 x M36 x 39mm
Pitch circle diameter (K): 1050mm
Flange thickness (C1): 82mm
Raised face diameter (D1): 980mm
Raised face height (F1): 5mm
Material: S235 JR
Rating: PN16
Type: Blind flange (EN1092-1 Type 05)

Standards: EN1092-1
Flange Face: Flat Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Blank Flange, Blind, Mild Steel, Carbon Steel, Flat Faced, FF Blind
£ 5,950.00 5950.0 GBP
DN900 (36" NB) PN6 FF BLIND FLANGE CS S235 JR
Flange overall diameter: 1075mm (D)
PCD: 1025mm (K)
Bolt Holes: 28 off 30mm diameter (L)
Flange Thickness: 48mm (C4)
Diameter of Flat Face (RF): 990mm (D1)
Height of Flat Face: 5mm (F1)
Material: Mild Steel
Grade: S235 JR
Standards: EN1092-1
Flange Face: Flat Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Blank Flange, Blind, Mild Steel, Carbon Steel, Flat Faced, FF Blind
Contact us for pricing 0.0 GBP
DN900 (36" NB) PN6 RF SLIP ON PLATE FLANGE CS S235 JR
Flange inside diameter of: 922.0mm (B1)
Flange overall diameter: 1075mm (D)
PCD: 1025mm (K)
Bolt Holes: 28 off 30mm diameter (L)
Flange Thickness: 48mm (C1)
Diameter of Raised Face (RF): 990mm (D1)
Height of raised face: 5mm (F1)
Material: Mild Steel
Grade: S235 JR
Standards: EN1092-1
Flange Face: Raised Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Mild Steel, Carbon Steel, Raised Faced, RFSO
Contact us for pricing 0.0 GBP
DN900 PN10 RF SLIP ON PLATE FLANGE CS S235JR
Flange inside diameter of: 922.0mm (B1)
Flange overall diameter: 1115mm (D)
PCD: 1050mm (K)
Bolt Holes: 24 off 33mm diameter (L)
Flange Thickness: 62mm (C1)
Diameter of Raised Face (RF): 980mm (D1)
Height of raised face: 5mm (F1)
Material: Mild Steel
Grade: S235 JR
Standards: EN1092-1
Flange Face: Raised Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Mild Steel, Carbon Steel, Flat Faced, FFSO
Contact us for pricing 0.0 GBP
DN900 PN16 RF BOSSED SLIP ON FLANGE CS S235JR
Flange outside diameter: 1125mm (D)
Flange inside diameter: 922.0mm (B1)
Flange thickness (C2): 48mm
Pitch Circle Diameter (PCD): 1050mm (K)
Hub height: 968mm (H1)
Neck diameter: 12mm (N2)
Raised Face Diameter: 5mm (d1)
Height of Raised Face: 28mm (f1)
Bolt Holes: M39 off 310.0mm diameter (L)
Material: Mild Steel
Grade: S235 JR
Standards: EN1092-1
Flange Face: Raised Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Bossed Slip on Flange, Weld on, Mild Steel, Carbon Steel, Raised Faced, SOB
Contact us for pricing 0.0 GBP
DN900 PN16 RF SLIP ON PLATE FLANGE CS S235JR
Flange inside diameter of: 922.0mm (B1)
Flange overall diameter: 1125mm (D)
PCD: 1050mm (K)
Bolt Holes: 24 off 39mm diameter (L)
Flange Thickness: 82mm (C1)
Diameter of Raised Face (RF): 980mm (D1)
Height of raised face: 5mm (F1)
Material: Mild Steel
Grade: S235 JR
Standards: EN1092-1
Flange Face: Raised Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Mild Steel, Carbon Steel, Raised Faced, RFSO
£ 1,890.00 1890.0 GBP
DN1000 (40" NB) PN10 FF BLIND FLANGE CS S235 JR
Flange OD (D): 1230mm
Drilling (No. x Bolt Holes x L): 28 x M33 x 36mm
Pitch circle diameter (K): 1160mm
Flange thickness (C4): 70mm
Material: S235 JR
Rating: PN10
Type: Blind flange (EN1092-1 Type 05)

Standards: EN1092-1
Flange Face: Flat Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Blank Flange, Blind, Mild Steel, Carbon Steel, Flat Faced, FF Blind
Contact us for pricing 0.0 GBP
DN1000 (40" NB) PN16 FF BLIND FLANGE CS S235 JR
Flange OD (D): 1255mm
Drilling (No. x Bolt Hole x L): 28 x M39 x 42mm
Pitch circle diameter (K): 1170mm
Flange thickness (C1): 90mm
Raised face diameter (D1): 1080mm
Raised face height (F1): 5mm
Material: S235 JR
Rating: PN16
Type: Blind flange (EN1092-1 Type 05)

Standards: EN1092-1
Flange Face: Flat Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Blank Flange, Blind, Mild Steel, Carbon Steel, Flat Faced, FF Blind
£ 8,400.00 8400.0 GBP
DN1000 (40" NB) PN6 FF BLIND FLANGE CS S235 JR
Flange overall diameter: 1175mm (D)
PCD: 1120mm (K)
Bolt Holes: 28 off 30mm diameter (L)
Flange Thickness: 52mm (C4)
Diameter of Flat Face (RF): 1090mm (D1)
Height of Flat Face: 5mm (F1)
Material: Mild Steel
Grade: S235 JR
Standards: EN1092-1
Flange Face: Flat Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Blank Flange, Blind, Mild Steel, Carbon Steel, Flat Faced, FF Blind
Contact us for pricing 0.0 GBP
DN1000 (40" NB) PN6 RF SLIP ON PLATE FLANGE CS S235 JR
Flange inside diameter of: 1022.0mm (B1)
Flange overall diameter: 1175mm (D)
PCD: 1120mm (K)
Bolt Holes: 28 off 30mm diameter (L)
Flange Thickness: 52mm (C1)
Diameter of Raised Face (RF): 1090mm (D1)
Height of raised face: 5mm (F1)
Material: Mild Steel
Grade: S235 JR
Standards: EN1092-1
Flange Face: Raised Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Mild Steel, Carbon Steel, Raised Faced, RFSO
Contact us for pricing 0.0 GBP
DN1000 PN10 RF SLIP ON PLATE FLANGE CS S235JR
Flange inside diameter of: 1022.0mm (B1)
Flange overall diameter: 1230mm (D)
PCD: 1160mm (K)
Bolt Holes: 28 off 36mm diameter (L)
Flange Thickness: 70mm (C1)
Diameter of Raised Face (RF): 1080mm (D1)
Height of raised face: 5mm (F1)
Material: Mild Steel
Grade: S235 JR
Standards: EN1092-1
Flange Face: Raised Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Mild Steel, Carbon Steel, Flat Faced, FFSO
Contact us for pricing 0.0 GBP
DN1000 PN16 RF BOSSED SLIP ON FLANGE CS S235JR
Flange outside diameter: 1255mm (D)
Flange inside diameter: 1022.0mm (B1)
Flange thickness (C2): 59mm
Pitch Circle Diameter (PCD): 1170mm (K)
Hub height: 1072mm (H1)
Neck diameter: 16mm (N2)
Raised Face Diameter: 5mm (d1)
Height of Raised Face: 28mm (f1)
Bolt Holes: M39 off 362.0mm diameter (L)
Material: Mild Steel
Grade: S235 JR
Standards: EN1092-1
Flange Face: Raised Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Bossed Slip on Flange, Weld on, Mild Steel, Carbon Steel, Raised Faced, SOB
Contact us for pricing 0.0 GBP
DN1000 PN16 RF SLIP ON PLATE FLANGE CS S235JR
Flange inside diameter of: 1022.0mm (B1)
Flange overall diameter: 1255mm (D)
PCD: 1170mm (K)
Bolt Holes: 28 off 42mm diameter (L)
Flange Thickness: 90mm (C1)
Diameter of Raised Face (RF): 1080mm (D1)
Height of raised face: 5mm (F1)
Material: Mild Steel
Grade: S235 JR
Standards: EN1092-1
Flange Face: Raised Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Mild Steel, Carbon Steel, Raised Faced, RFSO
£ 2,800.00 2800.0 GBP
DN1200 (48" NB) PN10 FF BLIND FLANGE CS S235 JR
Flange OD (D): 1455mm
Drilling (No. x Bolt Holes x L): 32 x M36 x 39mm
Pitch circle diameter (K): 1380mm
Flange thickness (C4): 83mm
Material: S235 JR
Rating: PN10
Type: Blind flange (EN1092-1 Type 05)

Standards: EN1092-1
Flange Face: Flat Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Blank Flange, Blind, Mild Steel, Carbon Steel, Flat Faced, FF Blind
Contact us for pricing 0.0 GBP
DN1200 (48" NB) PN16 FF BLIND FLANGE CS S235 JR
Flange OD (D): 1485mm
Drilling (No. x Bolt Hole x L): 32 x M45 x 48mm
Pitch circle diameter (K): 1390mm
Flange thickness (C1): 98mm
Raised face diameter (D1): 1295mm
Raised face height (F1): 5mm
Material: S235 JR
Rating: PN16
Type: Blind flange (EN1092-1 Type 05)

Standards: EN1092-1
Flange Face: Flat Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Blank Flange, Blind, Mild Steel, Carbon Steel, Flat Faced, FF Blind
£ 11,200.00 11200.0 GBP
DN1200 (48" NB) PN6 FF BLIND FLANGE CS S235 JR
Flange overall diameter: 1405mm (D)
PCD: 1340mm (K)
Bolt Holes: 32 off 33mm diameter (L)
Flange Thickness: 60mm (C4)
Diameter of Flat Face (RF): 1295mm (D1)
Height of Flat Face: 5mm (F1)
Material: Mild Steel
Grade: S235 JR
Standards: EN1092-1
Flange Face: Flat Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Blank Flange, Blind, Mild Steel, Carbon Steel, Flat Faced, FF Blind
Contact us for pricing 0.0 GBP
DN1200 (48" NB) PN6 RF SLIP ON PLATE FLANGE CS S235 JR
Flange inside diameter of: 1226.0mm (B1)
Flange overall diameter: 1405mm (D)
PCD: 1340mm (K)
Bolt Holes: 32 off 33mm diameter (L)
Flange Thickness: 60mm (C1)
Diameter of Raised Face (RF): 1295mm (D1)
Height of raised face: 5mm (F1)
Material: Mild Steel
Grade: S235 JR
Standards: EN1092-1
Flange Face: Raised Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Mild Steel, Carbon Steel, Raised Faced, RFSO
Contact us for pricing 0.0 GBP
DN1200 PN10 RF SLIP ON PLATE FLANGE CS S235JR
Flange inside diameter of: 1226.0mm (B1)
Flange overall diameter: 1455mm (D)
PCD: 1380mm (K)
Bolt Holes: 32 off 36mm diameter (L)
Flange Thickness: 83mm (C1)
Diameter of Raised Face (RF): 1295mm (D1)
Height of raised face: 5mm (F1)
Material: Mild Steel
Grade: S235 JR
Standards: EN1092-1
Flange Face: Raised Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Mild Steel, Carbon Steel, Flat Faced, FFSO
Contact us for pricing 0.0 GBP
DN1200 PN16 RF SLIP ON PLATE FLANGE CS S235JR
Flange inside diameter of: 1226.0mm (B1)
Flange overall diameter: 1485mm (D)
PCD: 1390mm (K)
Bolt Holes: 32 off 48mm diameter (L)
Flange Thickness: 98mm (C1)
Diameter of Raised Face (RF): 1295mm (D1)
Height of raised face: 5mm (F1)
Material: Mild Steel
Grade: S235 JR
Standards: EN1092-1
Flange Face: Raised Face
Certification Available: 2.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Mild Steel, Carbon Steel, Raised Faced, RFSO
£ 3,850.00 3850.0 GBP