Class 2500 Flanges

A class 2500 flanges can be created from various materials like stainless steel, carbon steel, mild steel, alloy steel, etc. and is resistant to abrasion & corrosion with high durability. Flanges such as American standard flanges, British standard flanges, German standard flanges, Indian Standard Flanges & Japanese Standard Flanges created using above mentioned materials have separate pressure ratings.


Welding neck flanges

Welding neck flanges

Slip on flanges

Slip on flanges

Blind flanges

Blind flanges

Threaded flanges

Threaded flanges

Lap joint flanges

Lap joint flanges

Socket weld flanges

Socket weld flanges

DIMENSIONS OF CLASS 2500 FLANGES (ANSI B 16.5) (in mm)
Nominal
Pipe Size
Flange
Dia
'O'
Dia of
Bolt Circle
'A'
Dia of Bolt Holes
'D'
No. of
Holes
Thk of Flange
'C'
Diameter at Weld Bevel
'S'
Dia of Hub
'E'
Length Through Hub Bore 'B' Dia of
R/F
R
Depth of
Socket
F
Length
of
Threading
S/O & S/W
Y
W/N
Y
L/J
Y
S/O & S/W
B
L/J
B
1/2'' 15 133.3 88.9 22.2 4 30.2 21.3 42.9 39.7 73.3 39.7 22.3 22.9 34.9 - 28.6
3/4'' 20 139.7 95.2 22.2 4 31.7 26.7 50.8 42.9 79.4 42.9 27.7 28.2 42.9 - 31.7
1'' 25 158.7 107.9 25.4 4 34.9 33.5 57.1 47.7 88.9 47.7 34.5 35.0 50.8 - 34.9
1 ¼'' 32 184.1 130.2 28.6 4 38.1 42.2 73.0 52.4 95.2 52.4 43.2 43.7 63.5 - 38.1
1 ½'' 40 203.2 146.0 31.7 4 44.4 48.3 79.4 60.3 111.1 60.3 49.5 50.0 73.0 - 44.4
2'' 50 234.9 171.4 28.6 8 50.8 60.4 95.2 69.8 127.0 69.8 62.0 62.5 92.1 - 50.8
2 ½'' 65 266.7 196.8 31.7 8 57.1 73.1 114.3 79.4 142.9 79.4 74.7 75.4 104.8 - 57.1
3'' 80 304.8 228.6 34.9 8 66.7 88.9 133.3 92.1 168.3 92.1 90.7 91.4 127.0 - 63.5
4'' 100 355.6 273.0 41.3 8 76.2 114.3 165.1 107.9 190.5 107.9 116.1 116.8 157.2 - 69.8
5'' 125 419.1 323.8 47.6 8 92.1 141.2 203.2 130.0 128.6 130.0 143.8 144.5 185.7 - 76.2
6'' 150 482.6 368.3 54.0 8 107.9 168.4 234.9 152.4 273.0 152.4 170.7 171.4 215.9 - 82.5
8'' 200 552.4 438.1 54.0 12 127.0 219.2 304.8 177.8 317.5 177.8 221.5 222.2 269.9 - 95.2
10'' 250 673.1 539.7 66.7 12 165.1 273.0 374.6 228.6 419.1 228.6 276.3 277.4 323.8 - 107.9
12'' 300 762.0 619.1 73.0 12 184.1 323.8 441.3 254.0 463.5 254.0 327.1 328.2 381.0 - 120.6

Note : Thickness 'C' is exclusive of Raised Face Thickness of 6.25 MM. For Class 2500