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  • All dimensions are in inches.
  • These flanges will be furnished with a 1/16" raised face unless otherwise specified.
  • Flat face option available.

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Industry Standard Class 125 Large Diameter Class 125/150 lb. Welding Neck Flange

Industry Standard Class 125/150 Weld Neck Flanges

Industry Standard Class 125 Large Diameter Class 125/150 lb. Welding Neck Flange

Industry Standard Class 125/150 Weld Neck Flanges

Industry Standard Class 125 Large Diameter Class 125/150 lb. Welding Neck Flange

Industry Standard Class 125/150 Weld Neck Flanges

Industry Standard Class 125 Large Diameter Class 125/150 lb. Welding Neck Flange

Industry Standard Class 125/150 Weld Neck Flanges

Industry Standard Class 125 Large Diameter Class 125/150 lb. Welding Neck Flange

Industry Standard Class 125/150 Weld Neck Flanges
Flange Type N/A Welding Neck
Nominal Pipe Size N/A 26 N/A 28 N/A 30 N/A 32 N/A 34
Outside Diameter (O) N/A 34.25 in N/A 36.50 in N/A 38.75 in N/A 41.75 in N/A 43.75 in
Thickness (T) N/A 2.00 in N/A 2.06 in N/A 2.13 in N/A 2.25 in N/A 2.31 in
Overall Thickness (Y) N/A 5.00 in N/A 5.06 in N/A 5.13 in N/A 5.25 in N/A 5.31 in
Point of Weld (A) N/A 26.00 in N/A 28.00 in N/A 30.00 in N/A 32.00 in N/A 34.00 in
Hub Diameter (X) N/A 28.50 in N/A 30.75 in N/A 32.75 in N/A 35.00 in N/A 37.00 in
Inside Diameter (B) N/A Specified by purchaser
Approximate Weight N/A 260 lb N/A 295 lb N/A 340 lb N/A 410 lb N/A 440 lb
Number of Bolt Holes N/A 24 N/A 28 N/A 28 N/A 28 N/A 32
Diameter of Bolt Holes N/A 1.38 in N/A 1.38 in N/A 1.38 in N/A 1.63 in N/A 1.63 in
Diameter of Bolt Circle (C) N/A 31.75 in N/A 34.00 in N/A 36.00 in N/A 38.50 in N/A 40.50 in