Forged Flange

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Steel Forged Flange Manufacturer, Supplier & Exporter | ASME/ANSI B16.5, B16.47, B16.48, BS4504, BS 10, EN 1092

Forged Flanges are essential piping components used to connect pipes, valves, pumps, and other equipment in industrial piping systems. Manufactured through advanced forging processes, these flanges offer superior mechanical strength, excellent dimensional accuracy, and enhanced resistance to pressure, temperature, and mechanical stress. Their robust construction makes them highly suitable for critical applications where reliability, safety, and long-term performance are essential. Forged Flanges are widely used across industries such as oil & gas, petrochemicals, power generation, chemical processing, refineries, and marine engineering.

Forged Flanges are available in a variety of materials including Stainless Steel, Carbon Steel, Alloy Steel, Duplex Steel, and other specialty alloys to meet diverse industrial requirements. The forging process improves the grain structure of the material, resulting in greater strength, durability, and resistance to corrosion and fatigue. These characteristics make Forged Flanges an ideal choice for high-pressure and high-temperature service conditions where conventional components may not provide the required level of performance.

Arrow Piping Solutions is a trusted manufacturer, supplier, and exporter of premium-quality Steel Forged Flanges manufactured in accordance with international standards such as ASME/ANSI B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, and EN 1092. Our flanges are available in a wide range of sizes, pressure ratings, and material grades to suit various industrial applications. With advanced manufacturing facilities, strict quality control procedures, competitive pricing, and timely delivery, Arrow Piping Solutions delivers dependable flange solutions to customers across domestic and global markets.

Long Weld Neck Flange

High-pressure forged flanges, Stainless steel, Carbon steel, Alloy steel forged flanges, Custom forged flange, Forged pipe flange, Forged slip-on flange, Forged blind flange, Forged weld neck flange, Precision forged flange

Forged pipe flange

SIZE RANGE

15mm (1/2" NPS ) up to 600mm ( 24" NPS ), For 2500# in sizes from NPS 1/2 to NPS 12

STANDARDS / DIMENSION

ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN

PRESSURE CLASS

150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64.

FLANGE FACE TYPE

FF—Flat Face, RF—Raised Face, FM—Female Face, M—Male Face, T—Tongue Face, G—Groove Face, RJ—Ring Joint.

CARBON STEEL

ASTM A105/A105N (SA105N), LTCS A350 LF2, A694

DUPLEX & SUPER DUPLEX

ASTM A182 / ASME SA182 - S31803, S32205, 2205, S32750, S32760, S32950, 2507.

STAINLESS STEEL

ASTM A182 F304, 304L, 304H, 316, 316L, 316H, 317, 317L, 321, 321H, 310, 310S, 347, 904L, etc.

ALLOY STEEL

ASTM A182 / SA182 - F1 / F5 / F9 / F11 / F12 / F22 / F91

MTC

EN 10204 3.2 and EN 10204 3.1, Test Certificates certifying NACE MR0175, NACE MR0103

Flanges ANSI/ASME B16.5 & B16.47
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Materials

➜
Stainless Steel ➜ Carbon Steel ➜ Alloy Steel ➜
Weld Neck Flange Diagram

ASME B16.5 FORGED FLANGE (CLASS 150) - DIMENSIONS & WEIGHT

+
NPS O T TJ R X #/Dia of Holesa Bolt Circle Dia B B2b B3 H L L2 L3c r D Thr
½ 3.5 0.38 0.44 1.38 1.19 4-0.62 2.38 0.88 0.62 0.9 0.84 0.56 1.81 0.62 0.12 0.38 0.62
¾ 3.88 0.44 0.5 1.69 1.5 4-0.62 2.75 1.09 0.82 1.11 1.05 0.56 2 0.62 0.12 0.44 0.62
1 4.25 0.5 0.56 2 1.94 4-0.62 3.12 1.36 1.05 1.38 1.32 0.62 2.12 0.69 0.12 0.5 0.69
1¼ 4.62 0.56 0.62 2.5 2.31 4-0.62 3.5 1.7 1.38 1.72 1.66 0.75 2.19 0.81 0.19 0.56 0.81
1½ 5 0.62 0.69 2.88 2.56 4-0.62 3.88 1.95 1.61 1.97 1.9 0.81 2.38 0.88 0.25 0.62 0.88
2 6 0.69 0.75 3.62 3.06 4-0.75 4.75 2.44 2.07 2.46 2.38 0.94 2.44 1 0.31 0.69 1
2½ 7 0.81 0.88 4.12 3.56 4-0.75 5.5 2.94 2.47 2.97 2.88 1.06 2.69 1.12 0.31 0.75 1.12
3 7.5 0.88 0.94 5 4.25 4-0.75 6 3.57 3.07 3.6 3.5 1.12 2.69 1.19 0.38 0.81 1.19
3½ 8.5 0.88 0.94 5.5 4.81 8-0.75 7 4.07 3.55 4.1 4 1.19 2.75 1.25 0.38 0.88 1.25
4 9 0.88 0.94 6.19 5.31 8-0.75 7.5 4.57 4.03 4.6 4.5 1.25 2.94 1.31 0.44 0.94 1.31
5 10 0.88 0.94 7.31 6.44 8-0.88 8.5 5.66 5.05 5.69 5.56 1.38 3.44 1.44 0.44 0.94 1.44

ASME B16.5 FORGED FLANGE (CLASS 300) - DIMENSIONS & WEIGHT

+
NPS O T TJ R X #/Dia of Holesa Bolt Circle Dia B B2b B3 H L L2 L3c r C D Thr
½ 3.75 0.5 0.56 1.38 1.5 4-0.63 2.62 0.88 0.62 0.9 0.84 0.81 2 0.88 0.12 0.93 0.38 0.62
¾ 4.62 0.56 0.62 1.69 1.88 4-0.75 3.25 1.09 0.82 1.11 1.05 0.94 2.19 1 0.12 1.14 0.44 0.62
1 4.88 0.62 0.69 2 2.12 4-0.75 3.5 1.36 1.05 1.38 1.32 1 2.38 1.06 0.12 1.41 0.5 0.69
1¼ 5.25 0.69 0.75 2.5 2.5 4-0.75 3.88 1.7 1.38 1.72 1.66 1 2.5 1.06 0.19 1.75 0.56 0.81
1½ 6.12 0.75 0.81 2.88 2.75 4-0.88 4.5 1.95 1.61 1.97 1.9 1.13 2.63 1.19 0.25 1.98 0.62 0.88
2 6.5 0.81 0.88 3.62 3.31 8-0.75 5 2.44 2.07 2.46 2.38 1.25 2.69 1.31 0.31 2.5 0.69 1.12
2½ 7.5 0.94 1 4.12 3.94 8-0.88 5.88 2.94 2.47 2.97 2.88 1.44 2.94 1.5 0.31 3 0.75 1.25
3 8.25 1.06 1.12 5 4.62 8-0.88 6.62 3.57 3.07 3.6 3.5 1.63 3.06 1.69 0.38 3.63 0.81 1.25
3½ 9 1.12 1.19 5.5 5.25 8-0.88 7.25 4.07 3.55 4.1 4 1.69 3.13 1.75 0.38 4.13 0.88 1.44
4 10 1.19 1.25 6.19 5.75 8-0.88 7.88 4.57 4.03 4.6 4.5 1.82 3.32 1.88 0.44 4.63 --- 1.44

ASME B16.5 FORGED FLANGE (CLASS 400) - DIMENSIONS & WEIGHT

+
NPS O T R X #/Dia of Holesa Bolt Circle Dia B B2b B3 H L L2 L3c r C D Thr
½ 3.75 0.56 1.38 1.5 4-0.63 2.62 0.88 To Be Specified By Purchaser 0.9 0.84 0.88 2.06 0.88 0.12 0.93 0.38 0.62
¾ 4.62 0.62 1.69 1.88 4-0.75 3.25 1.09 1.11 1.05 1 2.25 1 0.12 1.14 0.44 0.62
1 4.88 0.69 2 2.12 4-0.75 3.5 1.36 1.38 1.32 1.06 2.44 1.06 0.12 1.41 0.5 0.69
1¼ 5.25 0.81 2.5 2.5 4-0.75 3.88 1.7 1.72 1.66 1.12 2.62 1.12 0.19 1.75 0.56 0.81
1½ 6.12 0.88 2.88 2.75 4-0.88 4.5 1.95 1.97 1.9 1.25 2.75 1.25 0.25 1.99 0.62 0.88
2 6.5 1 3.62 3.31 8-0.75 5 2.44 2.46 2.38 1.44 2.88 1.44 0.31 2.5 0.69 1.12
2½ 7.5 1.12 4.12 3.94 8-0.88 5.88 2.94 2.97 2.88 1.62 3.12 1.62 0.31 3 0.75 1.25
3 8.25 1.25 5 4.62 8-0.88 6.62 3.57 3.6 3.5 1.81 3.25 1.81 0.38 3.63 0.81 1.38
3½ 9 1.38 5.5 5.25 8-1.00 7.25 4.07 4.1 4 1.94 3.38 1.94 0.38 4.13 --- 1.56
4 10 1.38 6.19 5.75 8-1.00 7.88 4.57 4.6 4.5 2 3.5 2 0.44 4.63 --- 1.44
5 11 1.5 7.31 7 8-1.00 9.25 5.66 5.69 5.56 2.12 4 2.12 0.44 5.69 --- 1.69
6 12.5 1.62 8.5 8.12 12-1.00 10.62 6.72 6.75 6.63 2.25 4.06 2.25 0.5 6.75 --- 1.81
8 15 1.88 10.62 10.25 12-1.12 13 8.72 8.75 8.63 2.69 4.62 2.69 0.5 8.75 --- 2
10 17.5 2.12 12.75 12.62 16-1.25 15.25 10.88 10.92 10.75 2.88 4.88 4 0.5 10.88 --- 2.19
12 20.5 2.25 15 14.75 16-1.38 17.75 12.88 12.92 12.75 3.12 5.38 4.25 0.5 12.94 --- 2.38
14 23 2.38 16.25 16.75 20-1.38 20.25 14.14 14.18 14 3.31 5.88 4.62 0.5 14.19 --- 2.5
16 25.5 2.5 18.5 19 20-1.50 22.5 16.16 16.19 16 3.69 6 5 0.5 16.19 --- 2.69
18 28 2.62 21 21 24-1.50 24.75 18.18 18.2 18 3.88 6.5 5.38 0.5 18.19 --- 2.75
20 30.5 2.75 23 23.12 24-1.62 27 20.2 20.25 20 4 6.62 5.75 0.5 20.19 --- 2.88
22 33 2.88 25.25 25.25 24-1.75 29.25 22.22 22.25 22 4.25 6.75 6 0.5 --- --- –
24 36 3 27.25 27.62 24-1.88 32 24.25 24.25 24 4.5 6.88 6.25 0.5 24.19 --- 3.25

ASME B16.5 FORGED FLANGE (CLASS 600) - DIMENSIONS & WEIGHT

+
NPS O T R X #/Dia of Holesa Bolt Circle Dia B B2b B3 H L L2 L3c r C D Thr
½ 3.75 0.56 1.38 1.5 4-0.63 2.62 0.88 To Be Specified By Purchaser 0.9 0.84 0.88 2.06 0.88 0.12 0.93 0.38 0.62
¾ 4.62 0.62 1.69 1.88 4-0.75 3.25 1.09 1.11 1.05 1 2.25 1 0.12 1.14 0.44 0.62
1 4.88 0.69 2 2.12 4-0.75 3.5 1.36 1.38 1.32 1.06 2.44 1.06 0.12 1.41 0.5 0.69
1¼ 5.25 0.81 2.5 2.5 4-0.75 3.88 1.7 1.72 1.66 1.12 2.62 1.12 0.19 1.75 0.56 0.81
1½ 6.12 0.88 2.88 2.75 4-0.88 4.5 1.95 1.97 1.9 1.25 2.75 1.25 0.25 1.99 0.62 0.88
2 6.5 1 3.62 3.31 8-0.75 5 2.44 2.46 2.38 1.44 2.88 1.44 0.31 2.5 0.69 1.12
2½ 7.5 1.12 4.12 3.94 8-0.88 5.88 2.94 2.97 2.88 1.62 3.12 1.62 0.31 3 0.75 1.25
3 8.25 1.25 5 4.62 8-0.88 6.62 3.57 3.6 3.5 1.81 3.25 1.81 0.38 3.63 0.81 1.38
3½ 9 1.38 5.5 5.25 8-1.00 7.25 4.07 4.1 4 1.94 3.38 1.94 0.38 4.13 --- 1.56
4 10 1.38 6.19 5.75 8-1.00 7.88 4.57 4.6 4.5 2 3.5 2 0.44 4.63 --- 1.44
5 11 1.5 7.31 7 8-1.00 9.25 5.66 5.69 5.56 2.12 4 2.12 0.44 5.69 --- 1.69
6 12.5 1.62 8.5 8.12 12-1.00 10.62 6.72 6.75 6.63 2.25 4.06 2.25 0.5 6.75 --- 1.81
8 15 1.88 10.62 10.25 12-1.12 13 8.72 8.75 8.63 2.69 4.62 2.69 0.5 8.75 --- 2
10 17.5 2.12 12.75 12.62 16-1.25 15.25 10.88 10.92 10.75 2.88 4.88 4 0.5 10.88 --- 2.19
12 20.5 2.25 15 14.75 16-1.38 17.75 12.88 12.92 12.75 3.12 5.38 4.25 0.5 12.94 --- 2.38
14 23 2.38 16.25 16.75 20-1.38 20.25 14.14 14.18 14 3.31 5.88 4.62 0.5 14.19 --- 2.5
16 25.5 2.5 18.5 19 20-1.50 22.5 16.16 16.19 16 3.69 6 5 0.5 16.19 --- 2.69
18 28 2.62 21 21 24-1.50 24.75 18.18 18.2 18 3.88 6.5 5.38 0.5 18.19 --- 2.75
20 30.5 2.75 23 23.12 24-1.62 27 20.2 20.25 20 4 6.62 5.75 0.5 20.19 --- 2.88
22 33 2.88 25.25 25.25 24-1.75 29.25 22.22 22.25 22 4.25 6.75 6 0.5 --- --- –
24 36 3 27.25 27.62 24-1.88 32 24.25 24.25 24 4.5 6.88 6.25 0.5 24.19 --- 3.25

ASME B16.5 FORGED FLANGE (CLASS 900) - DIMENSIONS & WEIGHT

+
NPS O T R X #/Dia of Holesa Bolt Circle Dia B B2b B3 H L L2 L3c r C D Thr
½ 3.75 0.56 1.38 1.5 4-0.63 2.62 0.88 To Be Specified By Purchaser 0.9 0.84 0.88 2.06 0.88 0.12 0.93 0.38 0.62
¾ 4.62 0.62 1.69 1.88 4-0.75 3.25 1.09 1.11 1.05 1 2.25 1 0.12 1.14 0.44 0.62
1 4.88 0.69 2 2.12 4-0.75 3.5 1.36 1.38 1.32 1.06 2.44 1.06 0.12 1.41 0.5 0.69
1¼ 5.25 0.81 2.5 2.5 4-0.75 3.88 1.7 1.72 1.66 1.12 2.62 1.12 0.19 1.75 0.56 0.81
1½ 6.12 0.88 2.88 2.75 4-0.88 4.5 1.95 1.97 1.9 1.25 2.75 1.25 0.25 1.99 0.62 0.88
2 6.5 1 3.62 3.31 8-0.75 5 2.44 2.46 2.38 1.44 2.88 1.44 0.31 2.5 0.69 1.12
2½ 7.5 1.12 4.12 3.94 8-0.88 5.88 2.94 2.97 2.88 1.62 3.12 1.62 0.31 3 0.75 1.25
3 8.25 1.25 5 4.62 8-0.88 6.62 3.57 3.6 3.5 1.81 3.25 1.81 0.38 3.63 0.81 1.38
3½ 9 1.38 5.5 5.25 8-1.00 7.25 4.07 4.1 4 1.94 3.38 1.94 0.38 4.13 --- 1.56
4 10 1.38 6.19 5.75 8-1.00 7.88 4.57 4.6 4.5 2 3.5 2 0.44 4.63 --- 1.44
5 11 1.5 7.31 7 8-1.00 9.25 5.66 5.69 5.56 2.12 4 2.12 0.44 5.69 --- 1.69
6 12.5 1.62 8.5 8.12 12-1.00 10.62 6.72 6.75 6.63 2.25 4.06 2.25 0.5 6.75 --- 1.81
8 15 1.88 10.62 10.25 12-1.12 13 8.72 8.75 8.63 2.69 4.62 2.69 0.5 8.75 --- 2
10 17.5 2.12 12.75 12.62 16-1.25 15.25 10.88 10.92 10.75 2.88 4.88 4 0.5 10.88 --- 2.19
12 20.5 2.25 15 14.75 16-1.38 17.75 12.88 12.92 12.75 3.12 5.38 4.25 0.5 12.94 --- 2.38
14 23 2.38 16.25 16.75 20-1.38 20.25 14.14 14.18 14 3.31 5.88 4.62 0.5 14.19 --- 2.5
16 25.5 2.5 18.5 19 20-1.50 22.5 16.16 16.19 16 3.69 6 5 0.5 16.19 --- 2.69
18 28 2.62 21 21 24-1.50 24.75 18.18 18.2 18 3.88 6.5 5.38 0.5 18.19 --- 2.75
20 30.5 2.75 23 23.12 24-1.62 27 20.2 20.25 20 4 6.62 5.75 0.5 20.19 --- 2.88
22 33 2.88 25.25 25.25 24-1.75 29.25 22.22 22.25 22 4.25 6.75 6 0.5 --- --- –
24 36 3 27.25 27.62 24-1.88 32 24.25 24.25 24 4.5 6.88 6.25 0.5 24.19 --- 3.25

ASME B16.5 FORGED FLANGE (CLASS 1500) - DIMENSIONS & WEIGHT

+
NPS O T R X #/Dia of Holesa Bolt Circle Dia B B2b B3 H L L2 L3c r C D Thr
½ 3.75 0.56 1.38 1.5 4-0.63 2.62 0.88 To Be Specified By Purchaser 0.9 0.84 0.88 2.06 0.88 0.12 0.93 0.38 0.62
¾ 4.62 0.62 1.69 1.88 4-0.75 3.25 1.09 1.11 1.05 1 2.25 1 0.12 1.14 0.44 0.62
1 4.88 0.69 2 2.12 4-0.75 3.5 1.36 1.38 1.32 1.06 2.44 1.06 0.12 1.41 0.5 0.69
1¼ 5.25 0.81 2.5 2.5 4-0.75 3.88 1.7 1.72 1.66 1.12 2.62 1.12 0.19 1.75 0.56 0.81
1½ 6.12 0.88 2.88 2.75 4-0.88 4.5 1.95 1.97 1.9 1.25 2.75 1.25 0.25 1.99 0.62 0.88
2 6.5 1 3.62 3.31 8-0.75 5 2.44 2.46 2.38 1.44 2.88 1.44 0.31 2.5 0.69 1.12
2½ 7.5 1.12 4.12 3.94 8-0.88 5.88 2.94 2.97 2.88 1.62 3.12 1.62 0.31 3 0.75 1.25
3 8.25 1.25 5 4.62 8-0.88 6.62 3.57 3.6 3.5 1.81 3.25 1.81 0.38 3.63 0.81 1.38
3½ 9 1.38 5.5 5.25 8-1.00 7.25 4.07 4.1 4 1.94 3.38 1.94 0.38 4.13 --- 1.56
4 10 1.38 6.19 5.75 8-1.00 7.88 4.57 4.6 4.5 2 3.5 2 0.44 4.63 --- 1.44
5 11 1.5 7.31 7 8-1.00 9.25 5.66 5.69 5.56 2.12 4 2.12 0.44 5.69 --- 1.69
6 12.5 1.62 8.5 8.12 12-1.00 10.62 6.72 6.75 6.63 2.25 4.06 2.25 0.5 6.75 --- 1.81
8 15 1.88 10.62 10.25 12-1.12 13 8.72 8.75 8.63 2.69 4.62 2.69 0.5 8.75 --- 2
10 17.5 2.12 12.75 12.62 16-1.25 15.25 10.88 10.92 10.75 2.88 4.88 4 0.5 10.88 --- 2.19
12 20.5 2.25 15 14.75 16-1.38 17.75 12.88 12.92 12.75 3.12 5.38 4.25 0.5 12.94 --- 2.38
14 23 2.38 16.25 16.75 20-1.38 20.25 14.14 14.18 14 3.31 5.88 4.62 0.5 14.19 --- 2.5
16 25.5 2.5 18.5 19 20-1.50 22.5 16.16 16.19 16 3.69 6 5 0.5 16.19 --- 2.69
18 28 2.62 21 21 24-1.50 24.75 18.18 18.2 18 3.88 6.5 5.38 0.5 18.19 --- 2.75
20 30.5 2.75 23 23.12 24-1.62 27 20.2 20.25 20 4 6.62 5.75 0.5 20.19 --- 2.88
22 33 2.88 25.25 25.25 24-1.75 29.25 22.22 22.25 22 4.25 6.75 6 0.5 --- --- –
24 36 3 27.25 27.62 24-1.88 32 24.25 24.25 24 4.5 6.88 6.25 0.5 24.19 --- 3.25

ASME B16.5 FORGED FLANGE (CLASS 2500) - DIMENSIONS & WEIGHT

+
NPS O T R X #/Dia of Holesa Bolt Circle Dia B B2b B3 H L L2 L3c r C D Thr
½ 3.75 0.56 1.38 1.5 4-0.63 2.62 0.88 To Be Specified By Purchaser 0.9 0.84 0.88 2.06 0.88 0.12 0.93 0.38 0.62
¾ 4.62 0.62 1.69 1.88 4-0.75 3.25 1.09 1.11 1.05 1 2.25 1 0.12 1.14 0.44 0.62
1 4.88 0.69 2 2.12 4-0.75 3.5 1.36 1.38 1.32 1.06 2.44 1.06 0.12 1.41 0.5 0.69
1¼ 5.25 0.81 2.5 2.5 4-0.75 3.88 1.7 1.72 1.66 1.12 2.62 1.12 0.19 1.75 0.56 0.81
1½ 6.12 0.88 2.88 2.75 4-0.88 4.5 1.95 1.97 1.9 1.25 2.75 1.25 0.25 1.99 0.62 0.88
2 6.5 1 3.62 3.31 8-0.75 5 2.44 2.46 2.38 1.44 2.88 1.44 0.31 2.5 0.69 1.12
2½ 7.5 1.12 4.12 3.94 8-0.88 5.88 2.94 2.97 2.88 1.62 3.12 1.62 0.31 3 0.75 1.25
3 8.25 1.25 5 4.62 8-0.88 6.62 3.57 3.6 3.5 1.81 3.25 1.81 0.38 3.63 0.81 1.38
3½ 9 1.38 5.5 5.25 8-1.00 7.25 4.07 4.1 4 1.94 3.38 1.94 0.38 4.13 --- 1.56
4 10 1.38 6.19 5.75 8-1.00 7.88 4.57 4.6 4.5 2 3.5 2 0.44 4.63 --- 1.44
5 11 1.5 7.31 7 8-1.00 9.25 5.66 5.69 5.56 2.12 4 2.12 0.44 5.69 --- 1.69
6 12.5 1.62 8.5 8.12 12-1.00 10.62 6.72 6.75 6.63 2.25 4.06 2.25 0.5 6.75 --- 1.81
8 15 1.88 10.62 10.25 12-1.12 13 8.72 8.75 8.63 2.69 4.62 2.69 0.5 8.75 --- 2
10 17.5 2.12 12.75 12.62 16-1.25 15.25 10.88 10.92 10.75 2.88 4.88 4 0.5 10.88 --- 2.19
12 20.5 2.25 15 14.75 16-1.38 17.75 12.88 12.92 12.75 3.12 5.38 4.25 0.5 12.94 --- 2.38
14 23 2.38 16.25 16.75 20-1.38 20.25 14.14 14.18 14 3.31 5.88 4.62 0.5 14.19 --- 2.5
16 25.5 2.5 18.5 19 20-1.50 22.5 16.16 16.19 16 3.69 6 5 0.5 16.19 --- 2.69
18 28 2.62 21 21 24-1.50 24.75 18.18 18.2 18 3.88 6.5 5.38 0.5 18.19 --- 2.75
20 30.5 2.75 23 23.12 24-1.62 27 20.2 20.25 20 4 6.62 5.75 0.5 20.19 --- 2.88
22 33 2.88 25.25 25.25 24-1.75 29.25 22.22 22.25 22 4.25 6.75 6 0.5 --- --- –
24 36 3 27.25 27.62 24-1.88 32 24.25 24.25 24 4.5 6.88 6.25 0.5 24.19 --- 3.25

High-pressure forged flange Standards

High-pressure forged flanges are designed to handle extreme pressure and temperature conditions. They are manufactured following stringent international standards to ensure safety, reliability, and compatibility. Common standards include:

1. ASME/ANSI Standards (American)

  • ASME B16.5– Pipe Flanges and Flanged Fittings (NPS 1/2" to 24").
  • ASME B16.47 – Large Diameter Steel Flanges (Series A & B, NPS 26" to 60").
  • ASME B16.36 – Orifice Flanges.
  • ASME B16.48 – Line Blanks (Spectacle, Spade, and Spacer Flanges).
  • ANSI B16.1 – Cast Iron Flanges and Flanged Fittings.
  • ANSI B16.42 – Ductile Iron Pipe Flanges and Flanged Fittings.

2. ISO Standards (International)

  • ISO 7005-1 – Steel Flanges for General Applications.
  • ISO 7005-2 – Cast Iron Flanges.
  • ISO 7005-3 – Copper Alloy Flanges.

3. EN Standards (European)

  • EN 1092-1 – Steel Flanges.
  • EN 1092-2 – Cast Iron Flanges.
  • EN 1092-3 – Copper Alloy Flanges.
  • EN 1092-4 – Aluminium Alloy Flanges.

4. DIN Standards (German)

  • DIN 2527 – Blind Flanges.
  • DIN 2576 – Slip-On Flanges (PN 10).
  • DIN 2633 – Weld Neck Flanges (PN 16).
  • DIN 2634 – Weld Neck Flanges (PN 25).
  • DIN 2635 – Weld Neck Flanges (PN 40).

5. JIS Standards (Japanese)

  • JIS B2220 – Steel Pipe Flanges.

6. GOST Standards (Russian)

  • GOST 12820 – Flat Flanges for Steel Pipe Joints.
  • GOST 12821 – Steel Welded Flanges for High-Pressure Applications.
  • GOST 33259 – Flange Connections for Industrial Equipment and Pipelines.

7. BS Standards (British)

  • BS 4504 – Circular Flanges for Pipes, Valves, and Fittings.
  • BS 10 – Specification for Flanges and Bolting.

8. API Standards (Oil & Gas)

  • API 6A – Wellhead and Christmas Tree Equipment Flanges.
  • API 605 – Large-Diameter Carbon Steel Flanges (merged into ASME B16.47 Series B).

9. AWWA Standards (Waterworks)

  • AWWA C207 – Steel Ring Flanges for Waterworks Service.

10. MSS Standards (Manufacturer's Standardization Society)

  • MSS SP-44 – Steel Pipe Flanges (merged into ASME B16.47 Series A).
  • MSS SP-51 – Flanges for Glass-Lined Equipment.

11. Material-Specific Standards (ASTM)

  • ASTM A105 – Carbon Steel Forged Flanges.
  • ASTM A182 – Alloy and Stainless Steel Forged Flanges.
  • ASTM A350 – Carbon and Low-Alloy Steel Flanges for Low-Temperature Service.
  • ASTM A694 – High-Strength Carbon and Alloy Steel Flanges for High-Pressure Applications.

12. Other Regional and Specialized Standards

  • KS B1511 – Korean Standard Flanges.
  • NF E29-206 – French Standard Flanges.
  • SANS 1123 – South African Standard for Steel Flanges.

Why Choose Arrow Piping Solutions For Industrial Forged Flanges?

Arrow Piping Solutions is a trusted manufacturer and supplier of high-quality Industrial Forged Flanges, delivering products that meet the demanding requirements of modern piping systems. Our focus on quality, precision engineering, and customer satisfaction enables us to provide durable and reliable flange solutions for a wide range of industrial applications.

Extensive Industry Experience

With years of expertise in the flange manufacturing industry, Arrow Piping Solutions has established itself as a dependable supplier for sectors such as oil & gas, petrochemicals, power generation, chemical processing, water treatment, and marine engineering. Our industry knowledge allows us to deliver solutions that meet the highest performance standards.

Timely Delivery Commitment

We maintain efficient production processes and a strong logistics network to ensure prompt delivery of forged flanges, helping customers meet project deadlines and minimize operational delays.

Customized Flange Solutions

Arrow Piping Solutions offers forged flanges in customized sizes, pressure classes, material grades, and specifications to meet unique application requirements. Our flexible manufacturing capabilities allow us to provide tailored solutions for both standard and specialized projects.

Superior Product Quality

Our Industrial Forged Flanges are manufactured using premium-quality raw materials and advanced forging techniques. Each product undergoes strict quality inspections to ensure excellent strength, durability, dimensional accuracy, and long service life.

What Are the Different Types of Forged Flanges?

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Arrow Piping Solutions manufactures and supplies a comprehensive range of Forged Flanges, including:

  • Weld Neck Flanges
  • Slip-On Flanges
  • Blind Flanges
  • Socket Weld Flanges
  • Threaded Flanges
  • Lap Joint Flanges
  • Orifice Flanges

What Are the Applications of Forged Flanges?

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Forged Flanges are widely used in industries such as oil & gas, petrochemical processing, chemical plants, power generation facilities, water treatment systems, marine engineering, and industrial manufacturing for secure and leak-proof pipe connections.

How Are Forged Flanges Tested for Quality?

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Our Forged Flanges undergo comprehensive quality testing procedures, including dimensional inspection, visual examination, mechanical testing, hydrostatic testing, and non-destructive testing (NDT) methods where required.

These inspections ensure compliance with international standards and guarantee reliable performance in critical applications.

AVAILABLE TYPES OF FLANGES

TONGUE AND GROOVE FLANGES

MALE AND FEMALE FLANGES

WELD NECK FLANGES

BLIND FLANGES

Orifice Flange

Socket Weld Flange / SWRF Flange