Welding Neck Flange

ANSI/ ASME B16.5 CLASS 300 WELDING NECK FLANGE

SPECIFICATIONS




▪  All dimensions are in inches
 
▪  These flanges will be furnished with a 1/16" raised face

   unless otherwise specified
 
▪  Flat face option available
 
▪  Standard Bore will be furnished unless otherwise specified
 
Nominal
Pipe Size		 Outside
Diameter 		Thickness Raised Face
Diameter		 Length
Thru Hub		 Point of
Weld		 Hub
Diameter 		Bore Approximate Weight Bolt Circle Number
of Holes		 Diameter
of Holes
(O) (T)  (R)  (Y)  (A) (X)  (B) (lbs)  (C)
1/2 3.75 0.56 1.38 2.06 0.84 1.50 0.62 2 2.63 4 0.63
3/4 4.63 0.63 1.69 2.25 1.05 1.88 0.82 3 3.25 4 0.75
1 4.88 0.69 2.00 2.44 1.32 2.13 1.05 4 3.50 4 0.75
1 1/4 5.25 0.75 2.50 2.56 1.66 2.50 1.38 5 3.88 4 0.75
1 1/2 6.13 0.81 2.88 2.69 1.90 2.75 1.61 7 4.50 4 0.88
2 6.50 0.88 3.63 2.75 2.38 3.31 2.07 9 5.00 8 0.75
2 1/2 7.50 1.00 4.13 3.00 2.88 3.94 2.47 12 5.88 8 0.88
3  8.25 1.13 5.00 3.13 3.50 4.63 3.07 15 6.63 8 0.88
3 1/2 9.00 1.19 5.50 3.19 4.00 5.25 3.55 18 7.25 8 0.88
4 10.00 1.25 6.19 3.38 4.50 5.75 4.03 25 7.88 8 0.88
5 11.00 1.38 7.31 3.88 5.56 7.00 5.05 32 9.25 8 0.88
6 12.50 1.44 8.50 3.88 6.63 8.13 6.07 42 10.63 12 0.88
8 15.00 1.63 10.63 4.38 8.63 10.25 7.98 67 13.00 12 1.00
10 17.50 1.88 12.75 4.63 10.75 12.63 10.02 91 15.25 16 1.13
12 20.50 2.00 15.00 5.13 12.75 14.75 12.00 140 17.75 16 1.25
14 23.00 2.13 16.25 5.63 14.00 16.75 13.25 180 20.25 20 1.25
16 25.50 2.25 18.50 5.75 16.00 19.00 15.25 250 22.50 20 1.38
18 28.00 2.38 21.00 6.25 18.00 21.00 17.25 320 24.75 24 1.38
20 30.50 2.50 23.00 6.38 20.00 23.13 19.25 400 27.00 24 1.38
22 33.00 2.63 25.25 6.50 22.00 25.25 21.25 465 29.25 24 1.63
24 36.00 2.75 27.25 6.63 24.00 27.63 23.25 580 32.00 24 1.63 

ASME B16.5 CLASS 300 CARBON WELDING NECK FLANGE is one main product of Metleader. Welding neck flange is a very popular and widely used for some industry pipeline because of it is easy to install. The only one disadvantage is that the cost of (WN) welding neck is a little higher than other type.  
ASME B16.5 CLASS 300 WELDING NECK FLANGE
Metleader CARBON WELDING NECK FLANGE, the material generally adopt ASTM A105 to produce. When the raw materal entered to our factory we will begin the first step inspection to guarantee the material is fully correct. Then the following production processing we will arrange our inspector to check step by step. So our ASME B16.5 CLASS 300 CARBON WELDING NECK FLANGE deliveried to customer are almost perfect.
ASME B16.5 CLASS 300 CARBON WELDING NECK FLANGE
We also have Class 150 welding neck flange.