Nstandard flange dimensions pdf

Below is a reference table for critical flange dimensions to help identify what standard you have. Flanges and fittings stainless steel short weld nipples b a dimensions mm ab isokf flange dn tubing iso part number 304 s. Dimensions, sizes and specificafion of din flange din standard flanges. Flange dimensions are determined by the pipe size and the pressure class required for the application. For working steam pressure above 150 ibs and upto 250 ibs per sq. Milwaukeehammond valve reserves the right to change design andor materials without. Dimensions in mm for flanges type 21 the outside hub diameter approximately corresponds to the outside pipe diameter. Texas flange provides the following series of individual pages in html and pdf format that contain flange dimensions of the standard flanges we provide. Coastal flange stocks import and domestic ansi b16. Flange tolerance pdf 296kb welding ends pdf 447kb ring joint flanges pdf 146kb print this page email this page. Ansi standard flange dimensions are designated as 150, 300, 400, 600, 900, 1500, and 2500, in sizes nps 12 through nps 24. Or, to simplify, just state the actual pipe sizes in order.

Sizes nps 12 through 312 are same as class 600 flanges. 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. Flange drillings in en10921 are generally the same as bs4504 and din 2501 but en10921 covers a wider range. G mm wn blind sow sw nominal size class 150 flanges to asme b16. The specified dimensions ensure interchangeability between bolted, clamped and rotable flanges under special conditions. Long welding neck flanges catalogue hydraulic and offshore. Stainless steel flanges, carbon steel forged flanges 15 nb. Flange flange butterfly valves with pn6, pnio, pn16 or pn25. Dimensions n1, n2 and n3 are measured at the intersection of the hub draft angle and the back face of the flange. Of flange to a tapped nonrotatable on a pump or gate valve.

This standard specifies the flange types and their facings, dimensions. 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. Class 400600900 series a large diameter flange dimensions. Dimensions and tolerances note 1 see page 85 for weld neck welding end dimension and tolerance data. Mss sp44 also covers nps 12 to nps 24 flanges which are equivalent to asme b16. Vacuum flanges several vacuum flange standards exist with differences in ultimate attainable pressure, size, and ease of attachment. Vacuum flanges several vacuum flange standards exist with. Stainless steel flanges, carbon steel forged flanges 15 nb to. 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. Flanges are joined by bolting, and sealing is completed with the use of gaskets and other sealing methods, and fixed to the piping system by welding or threading. Grey cast iron copper alloy cast and forged steel pn 6 120 90 4 m12 14 70 2 16. 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.

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. The six common types of ansi class flanges, including. All dimensions are in inches these flanges will be furnished with a 116 raised face unless otherwise specified. The flanges are bolted together with a gasket in between to prevent leackage. For working steam pressure above 100 ibs and upto 150 ibs per sq. Iso flanges also called large iso have a sexless design and are made from 304l stainless or aluminum. To order a reducing flange, state the smaller size first, then the. Flanges sorted by size, dimension, thickness, bolt circle, number of holes, and hole size.

Flange comparison table standard dimensions mm nb mm name rating od pcd bolts dia. Cast iron flanges stud reference chart the number, diameter and length of studs for cast iron flanges class 125 and 250. This standard was prepared by the joint standards australiastandards new. 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. The information in these pages was compiled from industry sources which texas flange and fitting supply believe to be reliable. These flange fittings are generally used in vacuum components in the low and medium vacuum range and can be found on a. 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. Cast iron flanges stud reference chart the number, diameter and length of. Flanges are standardized according publications from organizations like asme, mss, api and others. For d1 dimensions see document flange facing according to din en 10921. Mss sp44 is the only source for the nps 22 flange dimensions above. Ansi class flange types regardless of size or specification, flanges are fundamentally designed to close, cover, connect, or support pipe systems. Each flange face is counterbored or grooved to receive a metal centering.

Flanges are used on equipment for the nozzles and in piping systems. Nominal pipe size outside diameter o thickness t raised face diameter r. These flanges will be furnished with a 116 raised face unless otherwise specified. Bs 4504 flanges and bolting, metric series ansi, class 150. 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. For working steam pressure 50 ibs upto 100 ibs per sq. The standard covers a range of line blanks in nominal sizes dn. Standard bore will be furnished unless otherwise specified. 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 dimensions of flanges in piping systems and also the smaller flanges on equipment are standardized. Texas flange flanges steel flanges industrial pipe flanges. 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. 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. Additionally, a rotatable bolt ring can be used to fasten an of flange to a nonrotatable flange using bolts.

Din blind flange 2527252725272527252725272527 flat flange for welding. We provide ansi, api, and awwa pipe flanges in carbon steel, stainless steel, alloys, and chrome steel. Bolted flange design according to asme section viii division 1. Texas flange has served the petrochemical, process, and waterworks industries for over 3 decades. 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. Nominal pipe size nps inches outside diameter of flange incheso. Iso flanges conform to the vacuum flange standards issued by the international standards organization iso. Outside diameter 12 12 thickness q 1 716 raised face 116. Plate flanges aremade from castings conforming to astm a351 or a240 plate. Texas flange flanges steel flanges industrial pipe. This fastening method allows the of flange to be rotated for ease of component alignment. Pn 16 flanges din en 10921 dimensions of pn 16 flanges. Cs15 the information presented on this sheet is correct at time of publication. The following section is in order by pressure class due to the overlapping dimensions of.