Flanges Products
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WELDING NECK
SLIP ON
THREADED
CLASS 150 FLANGES　　　　　　　　　　　　　　　　　FORGED STEEL ASTM A-105 ANSI B 16.5
STAINLESS 　　　　　　　　　　　STEEL
S304,S304L,S316,S316L
Non.Size
Flange Outside Diameter
Flange Thickness Min   
Rasied Face Dia.
Bore
Length thru. Hub 2
W.N.. Socket Welding
Slip on. Weld Socket
Lap Joint Min.
Welding neck
Slip on, Threaded & Sock.wled
Lap joint
   O
   T
   A
B3
C min.
D
   F
   G
H
           15 89 11.5 34.9 15.8 22.2 22.9 47.6 16 16
20 98 13.0 42.9 20.8 27.8 28.2 52.4 16 16
           25 108 14.5 50.8 26.7 34.5 34.9 55.6 17 17
           32 117 16.0 63.5 36.1 43.2 43.7 57.1 21 21
           40 127 17.5 73.0 40.9 49.5 50.0 61.9 22 22
           50 152 19.5 92.1 52.6 61.9 62.5 63.5 25 25
           65 178 22.5 104.8 62.7 74.6 75.4 69.8 29 29
           80 191 24.0 127.0 78 90.7 91.4 69.8 30 30
           90 216 24.0 139.7 90.2 103.4 104.1 71.4 32 32
          100 229 24.0 157.2 102.4 116.1 116.8 76.2 33 33
          125 254 24.0 185.7 128.3 143.7 144.5 88.9 36 36
          150 279 25.5 215.9 154.2 170.7 171.4 88.9 40 40
          200 343 29.0 269.9 202.7 221.5 222.2 101.6 44 44
          250 406 30.5 323.8 254.5 276.2 277.4 101.6 49 49
          300 483 32.0 381.0 304.8 327.0 328.2 114.3 56 56
          350 535 35.0 412.5 To be Specified By Purchaser 359.2 360.2 127.0 57 79
          400 595 37.0 469.9 410.4 411.2 127.0 64 87
          450 635 40.0 533.4 461.8 462.3 139.7 68 97
          500 700 43.0 584.2 513.1 514.3 144.5 73 103
600 815 480 692.2 615.9 615.9 152.4 83 111
1. Socket Welding Flanges,sizes NPS 3.1/2" (DN90) and larger are not covered by ANSI 　
　　B16.5
2. Includes .06" (1.6 mm) raised face.
3. These dimensions correspond to inside diameters of pipe as given in ANSI B16.10 for
　　Standard Wall Pipe. Thickness of Standard Wall is the same as Schedule 40 in size
　　NPS 10 (DN 250 ) and smaller.
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