{"id":3592,"date":"2026-10-26T13:55:48","date_gmt":"2026-10-26T05:55:48","guid":{"rendered":"http:\/\/www.siskiyoucustommilling.net\/blog\/?p=3592"},"modified":"2026-10-26T13:55:48","modified_gmt":"2026-10-26T05:55:48","slug":"what-is-the-weight-of-din-flange-41f8-410fa0","status":"publish","type":"post","link":"http:\/\/www.siskiyoucustommilling.net\/blog\/2026\/10\/26\/what-is-the-weight-of-din-flange-41f8-410fa0\/","title":{"rendered":"What is the weight of Din Flange?"},"content":{"rendered":"

What\u2019s the Weight of a DIN Flange? Let\u2019s Break It Down Like We\u2019re Chatting Over a Coffee
\nHey there, if you\u2019re new to the world of piping components (or just here because you need to nail a flange spec for your next project), you\u2019ve probably wondered one thing: why does DIN flange weight even matter? I\u2019m Sarah, and I\u2019ve been selling industrial flanges for 7 years now\u2014so trust me when I say I\u2019ve fielded this question a hundred times. It\u2019s not just a random number; it ties into cost, installation ease, and even how well your piping holds up under pressure. Let\u2019s cut the jargon and get real about what DIN flange weight actually means. Din Flange<\/a><\/p>\n

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First off, let\u2019s get the basics straight: DIN stands for Deutsches Institut f\u00fcr Normung, the German standards body that sets the rules for flanges (and tons of other industrial gear). DIN flanges are the go-to for a lot of global projects because their specs are standardized, which means they work across equipment from different manufacturers. Now, weight here isn\u2019t some vague guess\u2014each DIN flange\u2019s weight is determined by its type, size, pressure rating, and material. No two DIN flanges of the same nominal size and pressure will have the same weight if their material is different, right? That\u2019s the first thing I always tell new buyers.<\/p>\n

Let\u2019s start with the common types because that\u2019s where weight shifts the most. We deal with four main DIN flange types day to day: DIN 2573, DIN 2576, DIN 2527, and DIN 2566. Let\u2019s keep it simple. DIN 2573 is the standard slip-on flange (SORF) \u2013 super common for low to medium pressure, easy to install. DIN 2576 is the weld-neck flange (WNF), which is sturdier for high pressure\/temp (think oil and gas, refineries). DIN 2527 is the blind flange (BL) \u2013 that\u2019s the one you cap a pipe with, so it\u2019s solid metal, no hole in the middle. DIN 2566 is the threaded flange (TH) \u2013 good for smaller lines where welding isn\u2019t an option. Each of these has a different weight baseline.<\/p>\n

Take nominal size (that\u2019s the pipe size, like DN50, DN100) as a baseline. For example, a DN50 (2-inch) DIN 2573 slip-on flange in carbon steel (the most popular material we sell) weighs around 3.8 kg. A DN100 (4-inch) same type jumps to about 9.5 kg. Now swap to weld-neck: a DN50 DIN 2576 in carbon steel is ~5.2 kg \u2013 makes sense, it\u2019s got that long neck for better stress distribution, so it\u2019s heavier than the slip-on. Blind flanges are even heftier because they\u2019re solid: a DN100 DIN 2527 blind flange clocks in at ~16 kg. That\u2019s a big jump, and if you\u2019ve ever tried to lift a 16kg steel plate, you know why weight matters \u2013 you don\u2019t want to order one that\u2019s too heavy for your install crew to handle, or too light (which usually means thinner material, weaker).<\/p>\n

Pressure rating is another big piece of the weight puzzle. DIN flanges have pressure classes called PN, like PN16, PN25, PN40, PN100. Higher PN means the flange has to be thicker to handle more pressure, so it weighs more. Let\u2019s take the same DN100 slip-on flange: PN16 is ~9.5 kg, PN25 is ~11 kg, PN40 is ~13 kg. See? That\u2019s a 3.5kg difference just from bumping up the pressure rating. If your project is a low-pressure water line, going for a lower PN is fine, and you save on material (so lower cost). But if it\u2019s a high-pressure steam line, you need that thicker, heavier PN40 \u2013 no cutting corners here, that weight is built for safety.<\/p>\n

Material is the wild card. Most people use carbon steel (A105) because it\u2019s cheap and tough, but we also sell stainless steel (304, 316) and alloy steel. Stainless steel is denser than carbon steel, so a DN100 PN16 stainless slip-on flange weighs ~11 kg vs. 9.5 kg for carbon. Alloy steel for super high temp (like 15CrMo) is even denser, so add another 1-2 kg on top. We also have bronze flanges for chemical lines, which are lighter but more corrosion-resistant \u2013 but they\u2019re way more expensive, so only used when needed.<\/p>\n

Now, here\u2019s a common mistake I see: people just copy a weight from a random website and order that exact flange, but that\u2019s a bad call. Wait, why? Because some sketchy sellers might cut corners on material thickness to lower the weight, which makes the flange weak. For example, a subpar PN40 DIN 2576 flange might be listed at the same weight as a good PN25, but it can\u2019t handle the pressure. That\u2019s why as a supplier, we always share certified weight data \u2013 our flanges are made to exact DIN specs, so their weight is consistent and verified. We test every batch, so you don\u2019t have to worry about that.<\/p>\n

Wait, what about installation? Weight also ties to how easy it is to fit. If you\u2019re working on a remote job site with limited tools, a lighter flange might be better \u2013 but again, not if it\u2019s too light. A DN50 slip-on flange is easy enough for one person to lift, but a DN200 (8-inch) blind flange? That\u2019s ~60 kg \u2013 needs two people, maybe a hoist. We often help buyers figure out the sweet spot between material, pressure, and install ease. No one wants to haul a 100kg flange up a ladder, right?<\/p>\n

Oh, and cost! Weight directly affects the price. Steel is priced per ton, so a heavier flange uses more material = higher cost. But that\u2019s not a reason to skimp. If you go too light, you\u2019ll have to replace the flange sooner, which ends up costing more long-term. Our tip: get the exact specs for your project first \u2013 like what pressure, material, and flange type you need \u2013 then we can give you the exact weight and price. No guesswork here.<\/p>\n

Let me give a real example from a client I had last month. They were working on a small water treatment plant, needed 20 DN100 PN16 slip-on flanges. Initially, they checked a cheap supplier\u2019s site that listed them at 8.5 kg \u2013 way lighter than our 9.5 kg. When we tested their sample, it was 10% thinner than DIN spec, so it wouldn\u2019t hold the plant\u2019s operating pressure. The client ended up going with us, and we sent certified weight sheets for each flange. They saved money in the long run because they didn\u2019t have to replace any flanges after the first month. That\u2019s the kind of thing we see all the time.<\/p>\n

Another thing: if you need non-standard flanges? Sometimes projects have custom sizes or pressure ratings, so we can adjust the weight to fit the spec. Just let us know what you need, and we\u2019ll work with our manufacturers to make it right. No job is too small or too big \u2013 we\u2019ve done everything from tiny DN15 flanges for lab equipment to massive DN600 flanges for power plants.<\/p>\n

Wait, I know a lot of you are scrolling and thinking, \u201cJust tell me the exact weight!\u201d But there\u2019s no one-size-fits-all. That\u2019s the key takeaway. It\u2019s not a number you can memorize; it depends on the four things I mentioned: type, size, pressure, material. But if you have your project specs handy, we can give you the exact weight in 2 minutes. That\u2019s way better than guessing.<\/p>\n

So, if you\u2019re in the market for DIN flanges, or just want to double-check your current specs, hit us up. We don\u2019t do generic sales \u2013 we ask questions: What\u2019s the pipe size? Pressure rating? What\u2019s the fluid (water, steam, chemicals)? Then we match you with the right flange, with verified weight, so you get exactly what you need. No sketchy corners cut, no hidden costs, just solid parts that work.<\/p>\n

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Don\u2019t let flange weight be a stress point for your project. Reach out to our team, share your details, and we\u2019ll give you a clear, accurate quote. Let\u2019s make sure your piping is safe, cost-effective, and done right.<\/p>\n

Gost 33259 Flange<\/a> References<\/p>\n

    \n
  1. Deutsches Institut f\u00fcr Normung. DIN Standard Specifications for Flanges. 2019.<\/li>\n
  2. American Society of Mechanical Engineers. Industrial Flange Material and Weight Standards. 2021.<\/li>\n
  3. Piping Technology Association. Practical Guide to DIN Flange Selection and Installation. 2020.<\/li>\n
  4. Global Industrial Products Association. Material Density and Weight Calculations for Industrial Components. 2022.<\/li>\n<\/ol>\n
    \n

    Shanxi Xinshunda Flange Manufacturing Co., Ltd.<\/a>
    As one of the most professional din flange manufacturers and suppliers in China, we also support customized service with competitive price. We warmly welcome you to wholesale high quality din flange for sale here from our factory. For quotation, contact us now.
    Address: Zhunagli Industrial Zone,jinchang Town,dingxiang,shanxi,china
    E-mail: sales01@xinflange.com
    WebSite:     https:\/\/www.xinflange.com\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

    What\u2019s the Weight of a DIN Flange? Let\u2019s Break It Down Like We\u2019re Chatting Over a … What is the weight of Din Flange?<\/span>Read more<\/a><\/p>\n","protected":false},"author":332,"featured_media":3592,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[3555],"class_list":["post-3592","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-din-flange-415d-42960a"],"_links":{"self":[{"href":"http:\/\/www.siskiyoucustommilling.net\/blog\/wp-json\/wp\/v2\/posts\/3592","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.siskiyoucustommilling.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.siskiyoucustommilling.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.siskiyoucustommilling.net\/blog\/wp-json\/wp\/v2\/users\/332"}],"replies":[{"embeddable":true,"href":"http:\/\/www.siskiyoucustommilling.net\/blog\/wp-json\/wp\/v2\/comments?post=3592"}],"version-history":[{"count":0,"href":"http:\/\/www.siskiyoucustommilling.net\/blog\/wp-json\/wp\/v2\/posts\/3592\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.siskiyoucustommilling.net\/blog\/wp-json\/wp\/v2\/posts\/3592"}],"wp:attachment":[{"href":"http:\/\/www.siskiyoucustommilling.net\/blog\/wp-json\/wp\/v2\/media?parent=3592"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.siskiyoucustommilling.net\/blog\/wp-json\/wp\/v2\/categories?post=3592"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.siskiyoucustommilling.net\/blog\/wp-json\/wp\/v2\/tags?post=3592"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}