Asme, the american society of mechanical engineers, will be the essential resource for mechanical engineers and other technical professionals throughout the world for solutions that benefit humankind. These flanges will be furnished with a 116 raised face unless otherwise specified. Weld neck flange dimensions are covered in asme b16. Standard pipe dimensions nps od inches schedule designations ansiasme wall thickness inches inside diameter inches weight lbs.
Content provider american society of mechanical engineers asme add to alert. October 2016 cast copper alloy pipe flanges, flanged fittings, and valves. Weld neck flange dimensions class 150 to class 2500. October 23, the standard was published as ansi b16. Asme procedures and policies, which precludes the issuance of interpretations by individuals.
The length of the stud bolt does not include the height of the chamfers points. Flanges manufactured using existing forging dyes and machinery settings based on the inch dimensions should be able. The design of a flange involves the selection of the gasket material, type, and dimensions, flange facing, bolting, hub proportions, flange width, and flange thickness. The dimensions in mm reflect the needed precision as much as possible. Flange drillings in en10921 are generally the same as bs4504 and din 2501 but en10921 covers a wider range.
Bolted flange design according to asme section viii division 1. In general, relatively larger tightening torque is required for a flat face flange with a full face gasket compared to the flange with a ring gasket when we calculate the required tightening torque based on the latest nonmandatory japanese industrial standard jis evaluation method, jis b 22051991, basis for calculation of pipe flanges1. M015 asme codes and standards asme is the leading international developer of. Reducing flanges are available in all types and pressures. Even if you used closed form solutions to assessactual assembly loads, the stress limits in appendix 2 are not applicable, so you should not be going back to appendix2. Documents sold on the ansi webstore are in electronic adobe acrobat pdf format, however some iso and iec standards are available from amazon in. These specification include only welding neck and blind flanges. When you consider that the majority of the asme flanges do not pass the app2 calculation at fullpressure rating, you are being too conservative in your flange design. Mss sp44 also covers nps 12 to nps 24 flanges which are equivalent to asme b16. Flange drilling, outside diameter, thickness, and facing are the same as those of the standard flange of the size from which the reduction is being made. Asme is a notforprofit membership organization that enables collaboration, knowledge sharing, career enrichment, and. Carbon steel flanges mechanical properties and chemistry conform to astm a105. Wrought and forged fittings tandards for engineers worldwide asme b16. During dimensional inspection of flange, you should check for.
Mss sp44 is the only source for the nps 22 flange dimensions above. Texas flange provides the following series of individual pages in html and pdf format that contain flange dimensions of the standard flanges. Nps 12 through nps 24 metricinch standard asme b16. All dimensions are in inches these flanges will be furnished with a 116 raised face unless otherwise specified. Design of large size high pressure raised face flanges to. Standard bore will be furnished unless otherwise specified. Flange dimensions are determined by the pipe size and the pressure class required for the application. The mm values are rounded off to the nearest 0 or 5 in the asme standard.
Nominal pipe size outside diameter o thickness t raised face diameter r length thru hub y hub diameter x bore b number of holes diameter of holes bolt circle c approximate weight lbs 12 3. Except for diameter of bolts and flange bolt holes, combining values from the two systems constitutes. Flanges are furnished faced, drilled and spot faced or back faced. Download this section typical facings for steel pipe flangesdimensions typical facings for steel pipe flangesdrawings facing dimensions for ring joints class 1502500 ring joint dimensionsansi b16. Meeting service and quality demands since 1986 texas flange provides the following series of individual pages in html and pdf format that contain flange dimensions of the standard flanges we provide. Thus, a comparison is done only for this sealing surfaces.