ASME/ANSI B16.5 2500 Class Threaded Flange/Standards, Dimensions & Weight

Threaded Flanges, also known as Screwed flanges, have a similar outline to slip-on flanges, but with a threaded bore that allows for assembly without welding. However, this limits their use to relatively low-pressure piping systems. While Threaded Flanges can be welded around the joint after assembly, this method is not recommended for increasing their pressure applications. Typically, Threaded Flanges are used in low-pressure conditions.

  • Our company is a manufacturer of ASME/ANSI B16.5 2500LB Threaded Flange, which is precisely engineered in accordance with international quality standards. For detailed dimensions of 2500 Class Threaded flange, kindly check the table below. Also, you can download the datasheet.
2500 Class Threaded Flange Drawing ASME/ANSI B16.5
Product Threaded Flange
Pressure Rating 2500 lb, 2500 Class
Dimensional Specification ASME/ANSI B16.5
Size 1/2″ to 24″
Surface Treatment Anti-rust Oil, Paint, Zinc, Hot Dipped Galvanized
Grades 304, 304L, 316L, 321, 347, 904L, Duplex, Carbon Steel, Nickel Alloys
Test Certificates As per EN 10204 3.1
Inspection Videos, Pictures, Inspection Report with Goods
Pipe Normal Diam. O.D. Flange Thk. Of Flange Min Diam.
of
Hub
Length Hub Thread Length Diam.
of Bolt
Circle
Diam.
of Bolt
Holes
Number
of Bolts
Diam. of
Bolts
(inch)
KG LB
inch dn O C X Y T BC BH BN BD
1/2″ 15 133.4 30.2 42.9 39.6 28.4 88.9 22.4 4 3/4″ 3 6.6
3/4″ 20 139.7 31.8 50.8 42.9 31.8 95.3 22.4 4 3/4″ 4 8.8
1″ 25 158.8 35.1 57.2 47.8 35.1 108 25.4 4 7/8″ 5 11
1-1/4″ 32 184.2 38.1 73.2 52.3 38.1 130 28.4 4 1″ 8 17.6
1-1/2″ 40 203.2 44.5 79.2 60.5 44.5 146.1 31.8 4 1 1/8″ 11 25
2″ 50 235 50.8 95.3 69.9 50.8 171.5 28.4 8 1″ 17 38
2-1/2″ 65 266.7 57.2 114.3 79.2 57.2 196.9 31.8 8 1 1/8″ 25 55
3″ 80 304.8 66.5 133.4 228.6 35.1 8 1 1/4″ 38 83
3-1/2″ 90
4″ 100 355.6 76.2 165.1 273.1 41.1 8 1 1/2″ 58 127
5″ 125 419.1 91.9 203.2 323.9 47.8 8 1 3/4″ 95 210
6″ 150 482.6 108 235 368.3 53.8 8 2″ 146 323
8″ 200 552.5 127 304.8 438.2 53.8 12 2″ 220 485
10″ 250 673.1 165.1 374.7 539.8 66.5 12 2 1/2″ 420 925
12″ 300 762 184.2 441.5 619.3 73.2 12 2 3/4″ 590 1300