Video beneath indicates the big difference among specific courses of a flange the usage of slip on flange to illustrate. Same concept applies to weld neck flange, blind flange or every other flange synthetic as consistent with ASME B16.five widespread.
We get this question plenty from buyers who're new to piping trade. Steel pipe flanges are categorised as consistent with ASME B16.five simple. The force rating of flange stages from one hundred fifty# to 2500#. The time period "lb", "type" and "#" are used interchangeably to designate the stress rating of the flange. The reality is that a hundred and fifty lb has no relation to one hundred fifty psi and so does the 300 or 600 lb does no longer correlate to three hundred or six hundred psi force rating. Pressure score of the flange relies on the material (A105, stainless, nickel alloy and many others.), the warmth deal with circumstance and rigidity "category". Here we will use the term "classification" to NOT confuse it with rigidity "ranking". So what's classification 150 flange or ASME B16.5 type one hundred fifty flange, because the query raised by using many clients.
First lets clarify the force ranking of metallic pipe flange. The table under presentations the power and temperature ranking of A105 carbon metal flange.
Pressure and Temperature Rating of Carbon Steel Pipe Flange
As you could see the rigidity decreases with rising temperature and has no precise correlation with power "class".
If you will have any question approximately ANSI Flange, ASME Flange, Flange Standards or Pressure Classification, electronic mail us at [email protected].
Industry Specification for Pipe Flange
Before we dive in to the the different kinds of flange, this is primary to notice the business specification it conforms to. So what's ANSI Flange, AWWA Flange and ASME Flange? What is the big difference among ANSI Flange and ASME Flange? What is the difference among Series A and Series B Flange. We will answer most of these questions.
There are four varieties of industry specifications overlaying extraordinary flange versions;
ANSI Flange, also which is called ASME B16.5 Flange
ASME Flange, also known as ASME B16.47 Flange (Series A and Series B)Industry Standard Flange (ASME B16.1 Flange)
AWWA Flange
ANSI sixteen.five / ASME B16.5 Flange Specification
ASME B16.five pipe flange and flanged fittings hide sizes from 1/2" nominal to 24" nominal. The simple covers strain, temperature, subject material, tolerance, size, checking out and marking of flange. The strain classed incorporated in ASME B16.five are a hundred and fifty#, 300#, 600#, 900# and 1500# for sizes up to 10" nominal and 2500# for sizes 12" with the aid of 24".ASME B16.5 generic is restricted to flanges created from solid or solid materials.
https://www.asme.org/products/codes-requirements/b165-2013-pipe-flanges-flanged-fittings-nps-12
ASME B16.47 Series A and Series B Flange Specification
ASME B16.47 covers monstrous diameter metal flanges from 26" nominal to 60" nominal pipe sizes. There are two styles of B16.forty seven flanes, Series A and Series B. Both have a bit of exceptional dimensions comparable to thickness, bolt circle diameter and variety of bolt holes. Pressure category coated by B16.forty seven is Class seventy five, one hundred fifty, three hundred, 400, 600 and 900#. Standard covers flanges fabricated from cast, forged or plate materials (for blind flange in basic terms).
What is the distinction between ASME B16.47 Series A and Series B (API605) flanges?
ASME B16.five established covers Steel Pipe Flanges and Flanged Fittings from NPS half of with the aid of NPS 24 Metric/Inch in strain class 150 to elegance 2500. It covers power-temperature scores, ingredients, dimensions, tolerances, marking, checking out, and tricks of designating openings for pipe flanges and flanged fittings. Two very great flanges such as weld neck flange and blind flanges are very on the whole utilized in piping programs. The term "B16.5" or "B16 five" is used interchangeability and refers to similar standard. However, the traditional ASME B16 five (ANSI B16 five) simply covers measurement up to 24 inches. For bigger sizes, ASME B16.47 familiar covers rigidity-temperature ratings, fabrics, dimensions, tolerances, marking, and checking out for pipe flanges in sizes NPS 26 because of NPS 60 and in ratings Classes 75, one hundred fifty, 300, four hundred, 600, and 900.
Standard ASME B16.5 weldneck flanges may also be received on line at Trupply (see hyperlink above)
Standard ASME B16.five blind flanges can also be purchased on-line at Trupply (see hyperlink above)
However, the everyday ASME B16.forty seven is in addition divided into ASME B16.forty seven collection A and ASME B16.47 sequence B flange for Blind flange and Weldneck flange. Series B flange turned into also formerly called API 605 flange. Term B16.forty seven or B sixteen 47 or ANSI B 16 forty seven are all used interchangeabily and refers to the equal commonplace.
The ASME B16.forty seven average include MSS SP-forty four: Steel Pipe Flanges and API 605: Large Diameter Flanges for Carbon Steel. Hence MSS SP44 flanges are equivalent to Series A flange where as API 605 flanges are equivalent to Series B flange. Materials protected on this commonplace are as that in ASME / ANSI B16.5 besides for nickel alloys. They also share the identical stress temperature score as B16.five flanges.
So what is the change among ASME B16.forty seven Series A and Series B (API605) flanges?
ASME B16 47 Series A flanges are an awful lot thicker, heavier and more desirable than Series B flanges for the comparable drive ans dimension. Series A flange can stand up to extra exterior loading than Series B flange. ASME B16.47 Series B flanges want smaller fasteners, in greater number, than Series A flanges. They actually have a smaller bolt circle diameter than that of Series A flanges. The smaller bolt circle diameter outcomes in less flange movement after install. Both Series A and Series B standards define weld neck flanges and blind flanges in raised face classification (RF) however in basic terms Series A defines ring model joint (RTJ) flanges from Class 300 via Class 900 inside of this fashionable. Price shrewd, ASME B16.forty seven Series A flanges are extra expensive than ASME B16 forty seven Series B flanges.
Most piping users or designers could choose Series A flanges for the hot pipeline or accessories. But while you are doing a little refurbishment, substitute job or non-quintessential piping layout, Series B flanges are extra general.
See files less than for contrast of flange sizes in two foremost principles (B16.5 and B16.47)
Flange Dimensions as in line with ASME B 16 5 common for 150# Welding Neck Flange, Blind Flange, Slipon, Socketweld & Lapjoint flange is right here
Flange Dimensions as in step with ASME B16 forty seven collection A generic for 150# weldneck and blind flange is the following
Flange Dimensions as in step with ASME B 16.forty seven series B trendy for one hundred fifty# weld neck and blind flange is the following
Conclusions: Standard weld neck, slip on, blind and so forth. flanges are covered by using in style B16.5 for sizes up to 24" nominal pipe. Sizes 26" and greater are blanketed by way of B16.forty seven series A or collection B for weldneck and blind flanges. Series A flange is heavier, thicker and settlement extra while sequence B flange has extra bolt holes and is lighter cheaper than sequence A. API605 flange and collection B flanges are equal component.
Industry Standard Flange (ASME B16.1 Flange)
No nationwide primary or governing frame controls the Industry Standard Flange. The measurement and material of Industry Standard Flange has been followed after years of "accepted" trade observe. It is sizeable to be aware that measurement and textile of trade trendy flange are lined by widely used ASME B16.1 whic his a commonly used for Class 25, one hundred twenty five and 250 Cast Iron Pipe Flange and Flanged Fittings. Pressure ranking of business flange fits the AWWA desk 4 magnificence E elementary. In sizes smaller than 24", Industry Standard Flange additionally matches B16.five flanges.AWWA Flange
This frequent covers slip-on and blind flanges for waterworks provider in sizes 4" through one hundred forty four" nominal (100mm by means of 3600 mm).
AWWA Website
Difference among ANSI and AWWA flange
We have already protected that ANSI flange potential ASME B16.5 flange. ANSI and AWWA well-liked for flanges fluctuate in a couple of tactics. The AWWA commonplace is meant for potable water use. Where as ANSI/ASME basic is aimed at industrial utility. AWWA flange rating are appropriate basically at atmospheric temperature while ANSI ranking covers from -20°F to 1500°F.
The two requisites additionally range within the scope of program. ANSI customary incorporates records for welding auxiliar connections while AWWA does not cover the installations. The AWWA familiar simply covers hub-form, ring, blind and threaded flange while ANSI known has more sorts comparable to weld neck, lap joint, socket weld flange and so on.
Standards protecting AWWA and ANSI flanges are;
ANSI/AWWA C115/A21.15-99: “American National Standard for Flanged Ductile-Iron Pipe with Ductile-Iron or Gray-Iron Threaded Flanges”
ANSI/AWWA C207-ninety four: “AWWA Standard for Steel Pipe Flanges for Waterworks Service-Sizes 4 In. Through one hundred forty four In.”ANSI / ASME B16.five-1981: “Pipe Flanges and Flanged Fittings”.
Dimension Table for B16.47, Industry Standard and AWWA FlangePipe Flange Gaskets
Steel pipe flange gaskets are used to create seal among two flange faces. The flange face acts at the seal seat and the flange gasket compresses among two flanges, with the bolt compression, to fill all irregularities inside the flange face and create a seal. The gasket is chosen established at the working condition including tension, temperature and chemical exposure. Gaskets are obtainable in following three styles;
Full Face Gasket: covers the complete face of the flange. Generally used on flat face flanges
Flat ring Gasket: covers best the sealing surface or the raised face of the flange.Metallic Ring Gakset: designed to be outfitted in RTJ Flanges.
Flange Manufacturers and Country of OriginUnapproved Import
Trupply carries extensive form of flanges in all rates levels. Our most cost-effective flanges are established import, above all from India. They are made by using numerous manufacturers and conforms to trade requirements inclusive of B16.5, B16.47 and so forth. Most of those manufacturers are ISO 9001 licensed with satisfactory method in vicinity. These flanges comes with Material Test Cert for traceability. Generic import makes up 40% of all flange gross sales inside the marketplace.Approved Import
Approved import carries flange producers which have been approved by using a number finish users after auditing their first-rate equipment and production centers. This includes producers from Europe, Korea and Pacific Rim nations. Notable authorized flange manufacturers carries;
Bebitz Germany
Metalfar ItalyGalperti USA / Italy
Technoforge ItalyUlma Spain
Domestic FlangeDomestic flange are made by means of manufacturers in United States and are judicious highest satisfactory flanges. They are on authorised listing of virtually all finish customers. A home flange is normally forty% bigger in expense when put next to authorized and unapproved flanges. Domestic producers include;
Weldbend
KerkauNational Flange
BoltexMaass Flange
Core PipeCoastal Flange
Federal FlangePrecision Flange
Buffalo FlangeTexas Flange
Anti Dumping Law Suit by using American Flange ManufacturersUpdate Mar 2017: Boltex and Weldbend added a law go well with on India, Italy and Spain for unfair change practices for flange imports. As of Mar 2017, the initial judgement used to be of their favor. More tips are within the press liberate right here.
*Video transcript for distinction between a hundred and fifty, 300 & six hundred # flange
Today we’ll talk approximately a slip on flange and diverse power ratings of a flange, we’ll use a slip on flange for example. This is a 2 inch raised face slip on flange, and you possibly can see it goes on a 2 inch pipe, it is a 2 inch pipe sample. It goes suitable here and then you definately weld it. When we discuss approximately a raised face flange, we’re talking about a 1/sixteen lip on the back give up, that it is easy to see perfect here. The same flange, if it is available in a flat face, there’s no lip on the bottom and that you may see the difference between a raised face and a flat confronted flange.All flanges include a marking on the part, and you might read correct here, the scale of the flange, the drive score, what specification it conforms to, and the state of foundation. The distinction between 150 pound and three hundred pound and a six hundred pound flange is broadly speaking the outer diameter, the quantity of bolts, and the bolt circle. This is a three hundred pound flange, raised face slip on. You can see it is going on a 2 inch pipe, as it’s a 2 inch flange, but this has greater bolts, you possibly can see accurate the following. The bolt measurement remains the identical for this 2 inch flange, it’s the 5/eight bolt length, however the variety of bolts are top, it went from four to 8 bolts.
Same factor, if you happen to start from 300 to 600 pound flange, once again, it really is for a 2 inch, you may see accurate the following. This element remains the similar. This outer diameter is relatively higher, this bolt circle is quite greater, it’s a thicker flange, that you may see precise right here should you compare it with this one, 300 pound, but for those who compare it with 150 pound, that you can see the 600 pound is a lot thicker. Also know the change that for a hundred and fifty pound and 300 pound, the raised face is 1/16, however in the event you move as much as 600 pound, the raised face is set a quarter inch, it’s plenty thicker at the returned stop.
In summary, the key difference between a hundred and fifty pound, 300 pound, and a six hundred pound flange is the quantity of bolt adjustments, the outer diameter adjustments, the ambitious circle diameter differences, and the flange will get thicker. Thank you.
*Video transcript for flange varieties
Today we’ll dialogue about diverse flanges such weld neck flange, slip on flange and blind flange and the like. These are all steel pipe flanges. This is a slip Click here for more on flange and here's a 2 inch flange, 150 pound. All flanges that we are displaying you as of late for the reason of this video are 150 pound flanges. 2 inch flange, it's a 2 inch pipe sample, and also you see the slip on flange is the best one, you just slide it on and you then weld it. This is a raised face flange, and the raised face flange, at the bottom of the flange, excellent here, you may see that has a lip, a 1/16 inch lip. This can also be a slip on flange, however it is a flat face, and we are exhibiting you as an instance that this doesn't have a raised face, this is often a flat faced flange slip on flange.
This is a 2 inch flange, however this is a threaded pipe flange. You can see the pipe threads right here. If you've got you have got a 2 inch pipe and you've a thread on it, then you definately basically thread it in. That’s the solely difference among a slip on or a threaded flange. Again, that's additionally a raised face, so it has a 1/sixteen lip on the bottom. A a hundred and fifty pound, 2 inch, threaded flange.
This is a socket weld flange. 2 inch, raised face, a hundred and fifty pound socket weld flange. Remember, all flanges have a stamping here that suggests the size, the power ranking, the state of foundation, the specification, the textile. A socket weld flange, if you may see desirable the following, has a touch socket. The pipe is going in the following and it suits inside the socket and then you can weld it. You can see from the backside, it truly is a widespread agenda pipe, this is often a wellknown bore socket weld flange, and it’s very flush from the bottom.
On the socket weld flange, that you need to specify the pipe agenda. The pipe schedule, it's a 2 inch nominal pipe, and this is a well-known time table pipe, and this can be a known schedule socket weld flange. The pipe time table and the bore of the socket weld flange has to tournament so that there's no raised face, there is no protrusion on the bottom. The difference between a socket weld flange that has a bore of schedule forty or time table 80 is this inner bore will modification so it fits the bore of the pipe. That’s what you’re attempting to do.
Remember, on a socket weld flange, as opposed to specifying if it’s a 150 pound or three hundred pound, you furthermore may have to mention if it is for a time table 40, schedule 80, agenda a hundred and twenty, agenda one hundred sixty, what is the time table of the pipe in which you’re looking to use this socket weld flange.
This is a weld neck flange, that's a completely preferred flange, a great deal of workers use it. Again, as the title says, it has a welding neck exact the following. 150 pound flange, it has 4 bolts, once again, raised face, it has slightly lip at the backside, the stamping on the area. The way the weld neck flange is used is you're taking a pipe, once more, that's a 2 inch pipe, and you want to have a bevel. This does no longer have a bevel, however whenever you are putting in, you’ll have a bevel, and you then simply butt it up accurate like this and then you definitely make a weld. That’s how it can be established and it’s which is called a weldneck flange, that's a welding neck of the flange.
On the weldneck also, it's important to specify the bore, so in the event you specify the time table, whether it’s for schedule 40, agenda eighty etc, as a way to identify the scale of the bore right here. Again, it really is also, that after you weld it, you don’t would like your pipe to be thicker than the flange; which may not be amazing for the pass. Once you specify the exact agenda of the flange that matches the schedule of the pipe, when you glance from the within, it will likely be very nearly flush. You won’t be ready to see any facet sticking out. A weld neck pipe flange.
This is a lap joint flange. The difference among a lap joint flange and a slip on flange, I desire to turn you a slip on flange, which seems to be very an identical. From the outdoors, it basically looks like the similar. But you seem on the backside, it has somewhat radius and a little stop exact right here. Some folks confuse it that it truly is a flat confronted flange. It seriously isn't. If you have a look at the distinction, in case you just look into the backside, you can still see that here is assorted since it has a bit of radius. I’ll tutor you good now why it has just a little radius, that lap joint flange.
For example, I even have the similar flange in stainless-steel, this can be a stainless-steel 304 flange. Whenever you’re making use of a lap joint flange, you employ a stub finish. The radius is for the stub end, so you do like this and that’s why it’s generally known as a lap joint flange. You need to have a stub finish and it truly is the goal of that little radius properly there.
This is a blind flange, and because the call says, there is no bore in it, only a blind flange. Again, 2 inch, one hundred fifty pound, blind flange, no bore in it. This is a 2 inch one. Again, it’s complicated to peer how the two inch suits on it, but the outer diameter matches what a 2 inch flange is.
This is an alternate illustration of a stainless steel flange. We lift equally carbon steel, chrome steel, nickel alloys flanges and this can be a 304 flange; it’s also feasible in 316. This is A105 solid subject material additionally achieveable in A105 normalized, you just have to specify what flange you choose. Thank you.