G mm wn blind sow sw nominal size class 150 flanges to asme b16. A flange is designed to connect sections of pipe or tube, or to join the pipe or tube to an assembly such as a pressure vessel, valve or pump. Metal industries is a professional steel flanges and forgings manufacturer in india, specialize in manufacturing flanges table, flanges dimensions, flanges standard chart, flanges size chart, steel valve, flanges bolts, steel flanges, steel forgings range of flange and forging types and sizes. Flanges sorted by size, dimension, thickness, bolt circle, number of holes, and hole size. Flange table ansi bs 10 nominal size 25mm 1 in bs 4504 diameter of flange bolt circle number number of bolts diameter of bolts diameter of holes diameter of raised face height of raised face thickness of flange. Stainless steel flanges, carbon steel forged flanges 15 nb. For working steam pressure 50 ibs upto 100 ibs per sq. Dimensions and tolerances note 1 see page 85 for weld neck welding end dimension and tolerance data.
Vacuum flanges several vacuum flange standards exist with differences in ultimate attainable pressure, size, and ease of attachment. Each flange face is counterbored or grooved to receive a metal centering. The following section is in order by pressure class due to the overlapping dimensions of. Cast iron flanges stud reference chart the number, diameter and length of. Flange comparison table standard dimensions mm nb mm name rating od pcd bolts dia. Flange dimensions shall be such that the stresses in the flange, calculated in accordance with 27, do not exceed the allowable stresses specified in 28.
Texas flange provides the following series of individual pages in html and pdf format that contain flange dimensions of the standard flanges we provide. Cs15 the information presented on this sheet is correct at time of publication. This standard was prepared by the joint standards australiastandards new. Texas flange has served the petrochemical, process, and waterworks industries for over 3 decades. For working steam pressure above 150 ibs and upto 250 ibs per sq. Mistakes sometimes occur because cast iron or ductile iron flanged fittings have 250 cast in them indicating a 250 psi pressure rating but the flange dimensions and bolt pattern conform to ansiasme b16. Flanges are used on equipment for the nozzles and in piping systems. They share the same underlying principle as the qf kf or nw flange series in that two smoothfaced sexless flanges clamp together with a sealing device between them. Mss sp44 also covers nps 12 to nps 24 flanges which are equivalent to asme b16. C o r b 1 a x y 1 weld neck flange r o c blind flange x b 2 o r c y 1 slip on flange. Iso flanges conform to the vacuum flange standards issued by the international standards organization iso. 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. There are many common flange standards and flanges within the same standard can etiher be flat commonly cast iron, ductile iron or raised face commonly cast steel and stainless steel.
The design principles of iso and kf seals are identical. Additionally, a rotatable bolt ring can be used to fasten an of flange to a nonrotatable flange using bolts. All dimensions are in inches these flanges will be furnished with a 116 raised face unless otherwise specified. Flange dimensions en10921 introduction british metric standard bs4504 is now obsolete and replaced by en10921 edition 092008 for steel flanges which also incorporates din standard. For working steam pressure above 100 ibs and upto 150 ibs per sq. Flange flange butterfly valves with pn6, pnio, pn16 or pn25.
The six common types of ansi class flanges, including. These flanges will be furnished with a 116 raised face unless otherwise specified. Flange drillings in en10921 are generally the same as bs4504 and din 2501 but en10921 covers a wider range. Outside diameter 12 12 thickness q 1 716 raised face 116. Nominal pipe size nps inches outside diameter of flange incheso. Vacuum flanges several vacuum flange standards exist with.
Iso flanges also called large iso have a sexless design and are made from 304l stainless or aluminum the design principles of iso and kf seals are identical. Nominal pipe size outside diameter o thickness t raised face diameter r length thru hub y point of weld a hub diameter x bore b number of holes diameter of. Dimensions, sizes and specificafion of din flange din standard flanges. Stainless steel flanges, carbon steel forged flanges 15 nb to. Din blind flange 2527252725272527252725272527 flat flange for welding. Cast iron flanges stud reference chart the number, diameter and length of studs for cast iron flanges class 125 and 250. Technical data jersey village, texas coastal flange. Class 400600900 series a large diameter flange dimensions.
Nominal pipe size outside diameter o thickness t raised face diameter r. Bolted flange design according to asme section viii division 1. Long welding neck flanges catalogue hydraulic and offshore. Flanges are standardized according publications from organizations like asme, mss, api and others. Flange dimensions are determined by the pipe size and the pressure class required for the application. We provide ansi, api, and awwa pipe flanges in carbon steel, stainless steel, alloys, and chrome steel. Dimensions in mm for flanges type 21 the outside hub diameter approximately corresponds to the outside pipe diameter. To order a reducing flange, state the smaller size first, then the. This standard specifies the flange types and their facings, dimensions.
Dimensions n1, n2 and n3 are measured at the intersection of the hub draft angle and the back face of the flange. Iso flanges also called large iso have a sexless design and are made from 304l stainless or aluminum. These flange fittings are generally used in vacuum components in the low and medium vacuum range and can be found on a. D flange diameter n number of bolt holes hcd hole circle diameter d diameter of bolt holes l1 face to face length l1 face to center length l2 face to center length in order to supply correct valve we want information about dimensions acc to below. The flanges are bolted together with a gasket in between to prevent leackage. Coastal flange stocks import and domestic ansi b16. Bs 4504 flanges and bolting, metric series ansi, class 150. The standard covers a range of line blanks in nominal sizes dn. The information in these pages was compiled from industry sources which texas flange and fitting supply believe to be reliable. Flange tolerance pdf 296kb welding ends pdf 447kb ring joint flanges pdf 146kb print this page email this page. The dimensions of flanges in piping systems and also the smaller flanges on equipment are standardized. Grey cast iron copper alloy cast and forged steel pn 6 120 90 4 m12 14 70 2 16. Dimensions weight kg dn nps flange od a mm length thru hub bolt drilling flange thickness d mm bore sow sw b mm raised face diam. Texas flange flanges steel flanges industrial pipe.
Milwaukeehammond valve reserves the right to change design andor materials without. With regard to their stabilitytemperature property, the material s 1. Ansi standard flange dimensions are designated as 150, 300, 400, 600, 900, 1500, and 2500, in sizes nps 12 through nps 24. The specified dimensions ensure interchangeability between bolted, clamped and rotable flanges under special conditions. Texas flange flanges steel flanges industrial pipe flanges. Pn 16 flanges din en 10921 dimensions of pn 16 flanges. Sizes nps 12 through 312 are same as class 600 flanges. Standard bore will be furnished unless otherwise specified. Each flange face is counterbored or grooved to receive a metal centering ring with an elastomeric oring around its o. Or, to simplify, just state the actual pipe sizes in order. This fastening method allows the of flange to be rotated for ease of component alignment. Flanges and fittings stainless steel short weld nipples b a dimensions mm ab isokf flange dn tubing iso part number 304 s. Equipment such as pressure vessels can also have socalled body flanges. Flange dimensions shall be such that the stresses in the flange, calculated in accordance with 27, do.