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Flange & Fitting


Standard specifications and technical requirements for various flanges and fittings.

ASME B16.5 Slip On Flange Class 300

Technical Drawing Dimensions and Weights *D: outside diameter of flange; G: outside diameter of raised face; X: diameter of hub at base; B: bore diameter of 300LB S/O flange. All units are mm. *K: diameter of bolt circle; n: number of bolts; d: diameter of bolt holes; l: diameter of bolts;  All units are mm except that d and l …

ASME B16.5 Slip On Flange Class 150

Technical Drawing Dimensions and Weights *D: outside diameter of flange; G: outside diameter of raised face; X: diameter of hub at base; B: bore diameter of 150LB S/O flange. All units are mm. *K: diameter of bolt circle; n: number of bolts; d: diameter of bolt holes; l: diameter of bolts;  All units are mm except that d and l …

ASME B16.5 Slip On Flanges

Construction, Welding & Application The slip on flange (S/O flange) manufactured in accordance with ASME B16.5 is a loose-type flange which has no direct connection to the adjoining pipe wall or the nozzle neck, or the vessel. It has a low hub that allows the flange to slip onto the pipe prior to welding. Two fillet welds, one internal and …

ASME B16.5 Welding Neck Flange Class 2500

Technical Drawing Dimensions and Weights *The dimensions of outside diameter, flange thickness, and raised face of ASME B16.5 Class 2500 welding neck flange. D: outside diameter of flange; T: flange thickness; t: height of raised face; G: outside diameter of raised face; all units are mm. *The bolting dimensions of ASME B16.5 Class 2500 welding neck flange. K: diameter of …

ASME B16.5 Welding Neck Flange Class 1500

Technical Drawing Dimensions and Weights *The dimensions of outside diameter, flange thickness, and raised face of ASME B16.5 Class 1500 welding neck flange. D: outside diameter of flange; T: flange thickness; t: height of raised face; G: outside diameter of raised face; all units are mm. *The bolting dimensions of ASME B16.5 Class 1500 welding neck flange. K: diameter of …

ASME B16.5 Welding Neck Flange Class 900

Technical Drawing Dimensions and Weights *The dimensions of outside diameter, flange thickness, and raised face of ASME B16.5 Class 900 welding neck flange. D: outside diameter of flange; T: flange thickness; t: height of raised face; G: outside diameter of raised face; all units are mm. *The bolting dimensions of ASME B16.5 Class 900 welding neck flange. K: diameter of …

ASME B16.5 Welding Neck Flange Class 600

Technical Drawing Dimensions and Weights *The dimensions of outside diameter, flange thickness, and raised face of ASME B16.5 Class 600 welding neck flange. D: outside diameter of flange; T: flange thickness; t: height of raised face; G: outside diameter of raised face; all units are mm. *The bolting dimensions of ASME B16.5 Class 600 welding neck flange. K: diameter of …

ASME B16.5 Welding Neck Flange Class 400

Technical Drawing Dimensions and Weights *The dimensions of outside diameter, flange thickness, and raised face of ASME B16.5 Class 400 welding neck flange. D: outside diameter of flange; T: flange thickness; t: height of raised face; G: outside diameter of raised face; all units are mm. *The bolting dimensions of ASME B16.5 Class 400 welding neck flange. K: diameter of …

ASME B16.5 Welding Neck Flange Class 300

Technical Drawing Dimensions and Weights *The dimensions of outside diameter, flange thickness, and raised face of ASME B16.5 Class 300 welding neck flange. D: outside diameter of flange; T: flange thickness; t: height of raised face; G: outside diameter of raised face; all units are mm. *The bolting dimensions of ASME B16.5 Class 300 welding neck flange. K: diameter of …

ASME B16.5 Welding Neck Flange Class 150

Technical Drawing Dimensions and Weights *The dimensions of outside diameter, flange thickness, and raised face of ASME B16.5 Class 150 welding neck flange. D: outside diameter of flange; T: flange thickness; t: height of raised face; G: outside diameter of raised face; all units are mm. *The bolting dimensions of ASME B16.5 Class 150 welding neck flange. K: diameter of …

ASME B16.5 Welding Neck Flange

Design and Construction The welding neck flange (WN) conforming to ASME B16.5 is a typical integral-type flange. It is cast or forged integrally with the tapered neck which is butt welded to the pipe. This design provides a smooth transition with little stress concentration since the high-stress concentration at the base of the flange is reduced by transferring stress to …

ASME B16.5 Flange

General Introduction Pipe flanges manufactured in accordance with ASME B16.5 are designated to 7 pressure ratings: Class 150, Class 300, Class 400, Class 600, Class 900, Class 1500 and Class 2500. The standard specification covers flanges with pressure ratings of Class 150, 300, 400, 600, 900 and 1500 in sizes NPS 1/2 through NPS 24 and flanges with pressure rating …

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