BS 4504 Flange

BS 10 Flange Manufacturers

The BS 10 flange is a type of flange standard defined by the British Standard 10 (BS 10) specification. It is commonly used in piping systems to provide a connection between two pipe ends, valves, or other equipment. The flange is used primarily in low-pressure applications and is available in various pressure ratings, such as PN 2.5 to PN 40, depending on the specific requirement. BS 10 also sets guidelines for bolt hole patterns and flange sizes, ensuring compatibility with other components in the pipeline.

The BS 4504 Flange is a British Standard that specifies the requirements for flanges used in piping systems for a range of industries. This standard covers flanges made from a variety of materials, and is designed to ensure a secure, leak-tight connection in high-pressure and high-temperature applications. BS 4504 flanges are classified into different types based on pressure ratings, which include PN 6, PN 10, PN 16, PN 25, and others. The standard specifies dimensions, materials, and design characteristics for flanges, including welded, slip-on, and blind flanges. These flanges are designed to meet the need for durability, corrosion resistance, and reliability in pipeline systems. The standard ensures compatibility with other components, offering a reliable, standardized approach to flange connections in various industrial settings.

Ample Alloys is a leading manufacturer and supplier of high-quality industrial products, specializing in BS 10 Flange, BS 4504 Flange. With a commitment to excellence, the company provides a wide range of products that meet the highest standards of quality, durability, and performance. The company is known for its strong customer service, ensuring timely delivery and customized solutions to meet specific client requirements. Through strict quality control measures and adherence to international standards, Ample Alloys has earned a reputation for providing reliable and high-performance products, making it a trusted partner for industries worldwide.

BS 10 / BS 4504 Flange

British Standard 10 flange, BS 10 slip-on flange, BS 10 weld neck flange, BS 10 blind flange, BS 10 raised face flange, British Standard 4504 flange, BS 4504 PN10 flanges, BS 4504 slip-on flange, BS 4504 weld neck flange, BS 4504 blind flange, BS 10 Table D Flange, BS 10 Table E, BS 10 Table H Flange, BS 10 Table F Flange, BS10 Table J Flange

BS 10 pipe flange Specifications

Size Range

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

Flange Face Type

Raised Face (RF), Flat Face (FF), and Ring Type Joint (RTJ)

Stainless Steel

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

Standards / Dimension

BS4504, BS 10

Carbon Steel

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

Alloy Steel

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

Pressure Class

PN 2.5 to PN 40 / Table D, Table E, Table F, Table H, Table J.

Duplex & Super Duplex

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

MTC

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

BS 10 Standard Table D,Table E,Table F,Table H Flange - Dimensions & Weight

BS 10 Flange Dimensions

Tables D and E of BS 10 : 1962 - Dimensions & Weight

BS 10 Flange Dimensions

Tables D and E of BS 10 : 1962 - Dimensions & Weight

BS 10 Flange Dimensions

BS 4504 Standard Flange Facing - Dimensions & Weight

DN A mm       Face Dimensions      
PN 2.5 PN 6 PN 10 PN 16 PN 25 PN 40 B mm C mm D mm E mm a mm b mm c mm d mm αmm e mm
10 35 35 40 40 40 40 34 35 24 23 2 4 3 2 – 5
15 40 40 45 45 45 45 39 40 29 28 2 4 3 2 – 5
20 50 50 58 58 58 58 50 51 36 35 2 4 3 2 41°16′ 5
25 60 60 68 68 68 68 57 58 43 42 2 4 3 2 41°16′ 5
32 70 70 78 78 78 78 65 66 51 50 2 4 3 2 41°16′ 5
40 80 80 88 88 88 88 75 76 61 60 3 4 3 2 41°16′ 5
50 90 90 102 102 102 102 87 88 73 72 3 4 3 2 41°16′ 5
65 110 110 122 122 122 122 109 110 95 94 3 4 3 2 41°16′ 5
80 128 128 138 138 138 138 120 121 106 105 3 4 3 2 41°16′ 5
100 148 148 158 158 162 162 149 150 129 128 3 4.5 3.5 2.5 32°15′ 6
125 178 178 188 188 188 188 175 176 155 154 3 4.5 3.5 2.5 32°15′ 6
150 202 202 212 212 218 218 203 204 183 182 3 4.5 3.5 2.5 32°15′ 6
200 258 258 268 268 278 285 259 260 239 238 3 4.5 3.5 2.5 32°15′ 6
250 312 312 320 320 335 345 312 313 292 291 3 4.5 3.5 2.5 32°15′ 6
300 365 365 370 378 395 410 363 364 343 342 4 4.5 3.5 2.5 32°15′ 6
350 415 415 430 438 450 465 421 422 395 394 4 5 4 3 27°24′ 7
400 465 465 482 490 505 535 473 474 447 446 4 5 4 3 27°24′ 7
450 520 520 532 550 555 560 523 524 497 496 4 5 4 3 27°24′ 7
500 570 570 585 610 615 615 575 576 549 548 4 5 4 3 27°24′ 7
600 670 670 685 725 720 735 675 676 649 648 5 5 4 3 27°24′ 7
700 775 775 800 795 820 – 777 778 751 750 5 5 4 3 27°24′ 7
800 880 880 905 900 930 – 882 883 856 855 5 5 4 3 27°24′ 7
900 980 980 1005 1000 1030 – 987 988 961 960 5 5 4 3 27°24′ 7
1000 1080 1080 1110 1115 1140 – 1092 1094 1062 1060 5 6 5 4 28°39′ 8
1200 1280 1295 1330 1330 1350 – 1292 1294 1262 1260 5 6 5 4 28°39′ 8
1400 1480 1510 1535 1530 1560 – 1492 1494 1462 1460 5 6 5 4 28°39′ 8
1600 1690 1710 1760 1750 1780 – 1692 1694 1662 1660 5 6 5 4 28°39′ 8
1800 1890 1920 1960 1950 1985 – 1982 1894 1862 1860 5 6 5 4 28°39′ 8
2000 2090 2125 2170 2150 2210 – 2092 2094 2062 2060 5 6 5 4 28°39′ 8

BS 4504 Standard Flange Drilling - Dimensions & Weight

BS 4504 Standard Flange Drilling Dimensions

DN PN A B C Bolt Holes
　 　 mm mm mm No. Bolt size
350 2.5 & 6 490 445 22 12 M20
10 505 460 22 16 M20
16 520 470 26 16 M24
25 555 490 33 16 M30
40 580 510 36 16 M33
400 2.5 & 6 540 495 22 16 M20
10 565 515 26 16 M24
16 580 525 30 16 M27
25 620 550 36 16 M33
40 660 585 39 16 M36
450 2.5 & 6 595 550 22 16 M20
10 615 565 26 20 M24
16 640 585 30 20 M27
25 670 600 36 20 M33
40 685 610 39 20 M36
500 2.5 & 6 645 610 22 20 M20
10 670 620 26 20 M24
16 715 650 33 20 M30
25 730 660 36 20 M33
40 755 670 42 20 M39
600 2.5 & 6 755 705 26 20 M24
10 780 725 30 20 M27
16 840 770 36 20 M33
25 845 770 39 20 M36
40 890 795 48 20 M45
700 2.5 & 6 860 810 26 24 M24
10 895 840 30 24 M27
16 910 840 36 24 M33
25 960 875 42 24 M39
800 2.5 & 6 975 920 30 24 M27
10 1015 950 33 24 M30
16 1025 950 39 24 M36
25 1085 990 48 24 M45
900 2.5 & 6 1075 1020 30 24 M27
10 1115 1050 33 28 M30
16 1125 1050 39 28 M36
25 1185 1090 48 28 M45
1000 2.5 & 6 1175 1120 30 28 M27
10 1230 1160 36 28 M33
16 1255 1170 42 28 M39
25 1320 1210 56 28 M52
1200 2.5 1375 1320 30 32 M27
6 1405 1340 33 32 M30
10 1455 1380 39 32 M36
16 1485 1390 48 32 M45
25 1530 1420 56 32 M52
1400 2.5 1575 1520 30 36 M27
6 1630 1560 36 36 M33
10 1675 1590 42 36 M39
16 1685 1590 48 36 M45
25 1755 1640 62 36 M56
1600 2.5 1790 1730 30 40 M27
6 1830 1760 36 40 M33
10 1915 1820 48 40 M45
16 1930 1820 56 40 M52
25 1975 1860 62 40 M56
1800 2.5 1990 1930 30 44 M27
6 2045 1970 39 44 M36
10 2115 2020 48 44 M45
16 2130 2020 56 44 M52
25 2185 2070 70 44 M64
2000 2.5 2190 2130 30 48 M27
6 2265 2180 42 48 M39
10 2325 2230 48 48 M45
16 2345 2230 62 48 M56
25 2425 2300 70 48 M64

BS 4504 Standard Code 101 Plate Flange - Dimensions & Weight

DN PN A mm B mm C mm
10 2.5, 6 75 12 18
10 &16 90 14
25 & 40 90 14
15 2.5 & 6 80 12 22
10 &16 95 14
　 25 & 40 95 14
20 2.5 & 6 90 14 27.5
10 &16 105 16
25 & 40 105 16
25 2.5 & 6 100 14 34.5
10 &16 115 16
25 & 40 115 16
32 2.5 & 6 120 16 43.5
10 &16 140 18
25 & 40 140 18
40 2.5 & 6 130 16 49.5
10 &16 150 18
25 & 40 150 18
50 2.5 & 6 140 16 61.5
10 & 16 165 20
25 & 40 165 20
65 2.5 & 6 160 16 77.5
10 & 16 185 20
25 & 40 185 22
80 2.5 & 6 190 18 90.5
10 &16 200 20
25 & 40 200 24
100 2.5 & 6 210 18 116
10 &16 220 22
25 & 40 235 26
125 2.5 & 6 240 20 141.5
10 & 16 250 22
25 & 40 270 28
150 2.5 & 6 265 20 170.5
10 & 16 285 24
25 & 40 300 30
200 2.5 & 6 320 22 221.5
10 &16 340 24
25 360 32
40 375 36
250 2.5 & 6 375 24 276.5
10 395 26
16 405 29
25 425 35
40 450 42
300 2.5 & 6 440 24 327.5
10 445 26
16 460 32
25 485 38
40 515 48
350 2.5 & 6 490 26 359.5
10 505 28
16 520 35 359
25 555 42 359.5
40 580 54
400 2.5 & 6 540 28 411
10 565 32
16 580 38
25 620 46
40 660 60
450 2.5 & 6 595 30 462
10 615 36
16 640 42
25 670 50
40 685 66
500 2.5 & 6 645 30 513.5
10 670 38
16 715 46
25 730 56
40 755 72
600 2.5 & 6 755 32 616.5
10 780 42
16 840 52
25 845 68
40 890 84
700 2.5 860 36 To be specifiedby purchaser
800 2.5 975 38
900 2.5 1075 40
1000 2.5 1175 42
1200 2.5 1375 44
1400 2.5 1575 48
1600 2.5 1790 51
1800 2.5 1990 54
2000 2.5 2190 58

BS 4504 Standard Code 111 Weld Neck Flange - Dimensions & Weight

DN PN A mm B mm C mm D mm E mm F mm G mm H mm
10 2.5,6 75 17.2 12 28 6 26 3 1.8
10 90 14 35 　 28 1.8
16 90 14 35 　 28 1.8
25 90 16 35 　 28 1.8
40 90 16 35 　 28 1.8
15 2.5,6 80 21.3 12 30 6 30 3 2
10 95 14 35 32 2
16 95 14 35 32 2
25 95 16 38 32 2
40 95 16 38 32 2
20 2.5,6 90 26.9 14 32 6 38 4 2.3
10 105 16 38 39 2.3
16 105 16 38 39 2.3
25 105 18 40 40 2.3
40 105 18 40 40 2.3
25 2.5,6 100 33.7 14 35 6 42 4 2.6
10 115 16 38 46 2.6
16 115 16 38 46 2.6
25 115 18 40 46 2.6
40 115 18 40 46 2.6
32 2.5,6 120 42.4 14 35 6 55 5 2.6
10 140 16 40 56 2.6
16 140 16 40 56 2.6
25 140 18 42 56 2.6
40 140 18 42 56 2.6
40 2.5,6 130 48.3 14 38 7 62 5 2.6
10 150 16 42 64 2.6
16 150 16 42 64 2.6
25 150 18 45 64 2.6
40 150 18 45 64 2.6
50 2.5,6 140 60.3 14 38 8 74 5 2.9
10 165 18 45 74 2.9
16 165 18 45 74 2.9
25 165 20 48 74 2.9
40 165 20 48 74 2.9
65 2.5,6 160 76.1 14 38 9 88 6 2.9
10 185 18 45 10 92 2.9
16 185 18 45 92 2.9
25 185 22 52 92 2.9
40 185 22 52 92 2.9
80 2.5,6 190 88.9 16 42 10 102 6 3.2
10 200 20 50 110 3.2
16 200 20 50 12 110 3.2
25 200 24 58 110 3.2
40 200 24 58 110 3.2

BS 4504 Standard Code 112 Slip On Flange - Dimensions & Weight

BS 4504 Standard Code 112 Slip On Flange Dimensions

DN PN A mm B mm C mm D mm  E mm F mm
200 6 320 221.5 20 44 240 8
10 &16 340 24 44 246
25 360 30 52 256
40 375 34 52 260
250 6 375 276.5 22 44 295 10
10 395 26 46 298
16 405 26 46 298
25 425 32 60 310
40 450 38 60 312
300 6 440 327.5 22 44 355 10
10 445 26 46 350
16 460 28 46 350
25 485 34 67 364
40 515 42 67 380
350 10 505 359.5 26 53 400 10
16 520 359 30 57 400
25 555 359.5 38 72 418
40 580 46 72 424
400 10 565 411 26 57 456 10
16 580 32 63 456
25 620 40 78 472
40 660 50 78 478
450 10 615 462 28 63 502 12
16 640 34 68 502
25 670 42 84 520
40 685 50 84 522
500 10 670 513.5 28 67 559 12
16 715 34 73 559
25 730 44 90 580
40 755 52 90 576
600 10 780 616.5 28 75 658 12
16 840 36 83 658
25 845 46 100 684
40 890 60 100 686

BS 4504 Code 113 Threaded Flange - Dimensions & Weight

DN PN A mm B mm C mm D mm E mm
10 6 75 25 12 20 3
16 90 30 14 20
40 90 30 16 22
15 6 80 30 12 20 3
16 95 35 14 20
40 95 35 16 22
20 6 90 40 14 24 4
16 105 45 16 24
40 105 45 18 26
25 6 100 50 14 24 4
16 115 52 16 24
40 115 52 18 28
32 6 120 60 14 26 5
16 140 60 16 26
40 140 60 18 30
40 6 130 70 14 26 5
16 150 70 16 26
40 150 70 18 32
50 6 140 80 14 28 5
16 165 84 18 28
40 165 84 20 34
65 6 160 100 14 32 6
16 185 104 18 32
40 185 104 22 38
80 6 190 110 16 34 6
16 200 118 20 34
40 200 118 24 40
100 6 210 130 16 40 6
16 220 140 20 40
40 235 145 24 44
DN PN A mm B mm C mm D mm E mm
125 6 240 160 18 44 6
16 250 168 22 44
40 270 170 26 48
150 6 265 185 18 44 8
16 285 195 22 44
40 300 200 28 52
200 6 320 240 20 44 8
16 340 246 24 44
40 375 260 34 52
250 6 375 295 22 44 10
16 405 298 26 46
40 450 312 38 60
300 6 440 355 22 44 10
16 460 350 28 46
40 515 380 42 67
350 16 520 400 30 57 10
40 580 424 46 72
400 16 580 456 32 63 10
40 660 478 50 78
450 16 640 502 34 68 12
40 685 522 50 84
500 16 715 559 34 73 12
40 755 576 52 90
600 16 840 658 36 83 12
40 890 686 60 100
700 16 910 760 36 83 12
800 16 1025 864 38 90 12
900 16 1125 968 40 94 12
1000 16 1255 1072 42 100 12

BS 4504 Standard Code 105 Blank Flange (Blind Flange) - Dimensions & Weight

DN PN A mm B mm  C mm 
10 2.5, 6 75 12 –
10 &16 90 14 –
25 & 40 90 16 –
15 2.5 & 6 80 12 –
10 &16 95 14 –
25 & 40 95 16 –
20 2.5 & 6 90 14 –
10 &16 105 16 –
25 & 40 105 18 –
25 2.5 & 6 100 14 –
10 &16 115 16 –
25 & 40 115 18 –
32 2.5 & 6 120 14 –
10 &16 140 16 –
25 & 40 140 18 –
40 2.5 & 6 130 14 –
10 &16 150 16 –
25 & 40 150 18 –
50 2.5 & 6 140 14 –
10 & 16 165 18 –
25 & 40 165 20 –
65 2.5 & 6 160 14 55
10 & 16 185 18 55
25 & 40 185 22 55
80 2.5 & 6 190 16 70
10 &16 200 20 70
25&40 200 24 70
100 2.5 & 6 210 16 90
10 &16 220 20 90
25&40 235 24 90
125 2.5 & 6 240 18 115
10 & 16 250 22 115
25 & 40 270 26 115
150 2.5 & 6 265 18 140
10 & 16 285 22 140
25 & 40 300 28 140
200 2.5 & 6 320 20 190
10 &16 340 24 190
25 360 30 190
40 375 34 190
250 2.5 & 6 375 22 235
10 395 26 235
16 405 26 235
25 425 32 235
40 450 38 235
DN PN A mm B mm  C mm 
300 2.5 & 6 440 22 285
10 445 26 285
16 460 28 285
25 485 34 285
40 515 42 285
350 2.5 & 6 490 22 325
10 505 26 325
16 520 30 325
25 555 38 325
40 580 46 325
400 2.5 & 6 540 22 375
10 565 26 375
16 580 32 375
25 620 40 375
40 660 50 375
450 2.5 & 6 595 24 425
10 615 28 425
16 640 34 425
25 670 42 425
40 685 54 425
500 2.5 & 6 645 24 475
10 670 28 475
16 715 36 475
25 730 45 475
40 755 56 475
600 2.5 & 6 755 34 575
10 780 34 575
16 840 44 575
25 845 54 575
40 890 70 575
700 2.5 860 36 –
6 860 38 –
10 895 38 670
16 910 48 670
800 2.5 975 38 –
6 975 42 –
10 1015 42 770
16 1025 52 770
900 2.5 1075 40 –
6 1075 46 –
10 1115 46 860
16 1125 58 860
1000 2.5 1175 42 –
6 1175 52 –
10 1230 52 960
16 1255 64 960
1200 2.5 1375 44 –
6 1405 60 –
10 1455 60 1160
16 1485 76 1160
1400 2.5 1575 48 –
6 1630 68 –
1600 2.5 1790 51 –
6 1830 76 –
1800 2.5 1990 54 –
6 2045 84 –
2000 2.5 2190 58 –
6 2265 92 –

BS 10 flanged fittings Standards

The BS 10 flanged fittings are governed by British Standard 10, which defines the specifications and requirements for flanges used in piping systems. The standards are essential for ensuring the flanges are manufactured to certain dimensions, pressure ratings, and material specifications to suit various applications.

  1. BS Standards (British)
    • BS 4504 – Circular Flanges for Pipes, Valves, and Fittings.
    • BS 10 – Specification for Flanges and Bolting.
  2. 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.
  3. 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 Ample Alloys For BS 4504 flange!

Ample Alloys ensures that every BS 4504 flange meets the required dimensions, pressure ratings, and material specifications for optimal performance in various industrial applications.

High-Quality Standards

Ample Alloys ensures that all BS 4504 flanges are manufactured to meet international quality standards, ensuring reliability and durability.

Precision Manufacturing

Our BS 4504 flanges are produced with precise dimensions, pressure ratings, and material specifications for consistent performance.

Experienced Supplier

With years of experience in the industry, Ample Alloys has earned a reputation for providing top-quality flanges.

Competitive Pricing

We offer cost-effective solutions without compromising on quality, making us a trusted choice for businesses.

What pressure ratings do BS 10 and BS 4504 flanges have?

BS 10 flanges come with different pressure ratings ranging from PN 2.5 to PN 40. BS 4504 flanges cover pressure ratings up to PN 63 or higher, depending on the specific flange design and application.

Are BS 10 and BS 4504 flanges compatible with other flange standards?

While they are designed to meet British standards, BS 10 and BS 4504 flanges can often be used in conjunction with other international flange standards such as ASME or ANSI, though compatibility should be confirmed based on specific dimensions and pressure ratings.

What is the difference between BS 10 and BS 4504 flanges?

BS 10 flanges are used in lower-pressure systems, while BS 4504 flanges are designed for higher-pressure systems and more demanding applications.

Available Types of Flanges

ASME/ANSI B16.5, B16.47 Slip on Flange

Slip on Flanges

ASME/ANSI B16.5, B16.47 Weld Neck Flanges / Long Weld Neck

Weld Neck Flanges / Long Weld Neck

ASME/ANSI B16.5, B16.47 Blind Flange

Blind Flanges

ASME/ANSI B16.5, B16.47 Socket Weld Flange

Socket Weld Flanges

ASME/ANSI B16.5, B16.47 Orifice Flange

Orifice Flanges

ASME/ANSI B16.5, B16.47 Ring Type Joint Flange

Ring Type Joint Flanges / RTJ Flange

ASME/ANSI B16.5, B16.47 Threaded Flange

Threaded Flanges

ASME/ANSI B16.5, B16.47 Lap Joint Flange

Lap Joint Flanges

ASME/ANSI B16.5, B16.47 Spectacle Blind Flanges / Paddle Blind / Ring Spacer

Spectacle Blind Flanges / Paddle Blind / Ring Spacer

ASME/ANSI B16.5, B16.47 Nipoflange

Nipoflange

ASME/ANSI B16.5, B16.47 Weldoflange

Weldoflange

ASME/ANSI B16.5, B16.47 Flangeolet

Flangeolet

ASME/ANSI B16.5, B16.47 Forged Flange

Forged Flange

ASME/ANSI B16.5, B16.47 Tongue and Groove Flange

Tongue and Groove Flanges

ASME/ANSI B16.5, B16.47 Male and Female Flange

Male and Female Flanges

ASME/ANSI B16.5, B16.47 Reducing Flange

Reducing Flanges

ASME/ANSI B16.5, B16.47 Square Flange

Square Flanges