Class 2500 Standard Connection Flanges

elbow-90

Long Weld Neck "LWN"

graph-buttweld-90

Heavy Barrel "HB"

graph-buttweld-90

Equal Barrel "E"

Size Flange Barrel OD Bolting Nut Stud Bolt Weights Length
Nom Bore LWN & E Bore HB OD Thk RF of OD LWN HB E # ofHoles Hole Size Bolt Circle Stop Dia Relief Dia Relief Length Size RF Length RTJ Length LWN HB E Base
B T D D D C NS NR NL Base Per 1" Base Per 1" Base Per 1"
 ½ 0.5 0.55 5.25 1.19 1.38 1.81 2.25 5.25 4 0.88 3.5 2.25 1.81 1 ¾   4 ¾ 4 ¾ 11 0.7 14 1.1 45 6.1 9
 ¾ 0.75 0.74 5.5 1.25 1.69 2.06 2.5 5.5 4 0.88 3.75 2.5 2.06 1 ¾   5    5    13 0.8 17 1.3 49 6.6 9
1 1 0.96 6.25 1.38 2 2.25 2.81 6.25 4 1 4.25 2.81 2.25 1.12 ⅞  5 ½ 5 ½ 18 0.9 22 1.6 62 8.5 9
1 ¼ 1.25 1.28 7.25 1.5 2.5 2.88 3.5 7.25 4 1.12 5.12 3.5 2.88 1.25 1 6    6    27 1.5 32 2.4 84 11 9
1 ½ 1.5 1.5 8 1.75 2.88 3.12 3.94 8 4 1.25 5.75 3.94 3.12 1.38 1 ⅛  6 ¾ 6 ¾ 33 1.7 42 3 94 14 9
2 2 1.94 9.25 2 3.62 3.75 5.12 9.25 8 1.12 6.75 5.12 3.75 1.25 1 7    7    48 2.2 66 5 131 18 9
2 ½ 2.5 2.32 10.5 2.25 4.12 4.5 5.94 10.5 8 1.25 7.75 5.94 4.5 1.38 1 ⅛  7 ¾ 8    66 3.1 90 6.7 165 23 9
3 3 2.9 12 2.62 5 5.25 7 12 8 1.38 9 7 5.25 1.5 1 ¼  8 ¾ 9    97 4.1 127 9 210 30 9
4 4 3.83 14 3 6.19 6.5 8.38 14 8 1.62 10.75 8.38 6.5 1.75 1 ½   10    10 ¼ 159 5.8 218 12 391 40 12
5 5 4.81 16.5 3.62 7.31 8 10 16.5 8 1.88 12.75 10 8 2 1 ¾   11 ¾ 12 ¼ 248 8.7 319 17 518 55 12
6 6 5.76 19 4.25 8.5 9.25 11.38 19 8 2.12 14.5 11.38 9.25 2.25 2 13 ½ 14    358 11 441 21 641 73 12
8 8 7.62 21.75 5 10.62 12 14.12 21.75 12 2.12 17.25 14.12 12 2.25 2 15    15 ½ 589 18 743 31 1167 92 16
10 10 9.56 26.5 6.5 12.75 14.75 17.38 26.50 12 2.62 21.25 17.38 14.75 2.75 2 ½   19 ¼ 20    997 26 1202 47 1625 134 16
12 12 11.38 30 7.25 15 17.38 20.12 30 12 2.88 24.38 20.12 17.38 3 2 ¾   21 ¼ 22    1363 35 1609 61 1995 168 16

Dimensions are in inches. Weights are in pounds.

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In the lifeline of industries, our fittings make sure pipeline in fact life lines of our industries are in perfect fit always. we at Quality Forge & Fitting always strive to make fittings & flanges that are excellent in quality,rich in material content and made to perfection that will last forever.

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What Is Flange?

A flange is an external or internal ridge, or rim (lip), for strength, as the flange of an iron beam such as an I-beam or a T-beam; or for attachment to another object, as the flange on the end of a pipe, steam cylinder, etc., or on the lens mount of a camera; or for a flange of a rail car or tram wheel. Thus flanged wheels are wheels with a flange on one side to keep the wheels from running off the rails. The term "flange" is also used for a kind of tool used to form flanges. Pipes with flanges can be assembled and disassembled easily. read more

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