فلنج(FLANGE) چیست؟

فلنج (FLANGE) قطعه‌ای دایره‌ای‌شکل با چندین سوراخ است که برای اتصال لوله‌ها به یکدیگر یا متصل کردن آن‌ها به تجهیزاتی مانند شیرآلات و پمپ‌ها به کار می‌رود. این اتصال‌دهنده را می‌توان با پیچ و مهره یا از طریق جوشکاری به کار گرفت. فلنج‌ها به دلیل ایمنی بالا و سازگاری با فشارهای مختلف، از پرکاربردترین و پرفروش‌ترین اتصالات در صنایع مختلف محسوب می‌شوند.

A flange is a plate or ring to form a rim at the end ofa pipe when fastened
to the pipe (for example, a closet flange). A blind flange is a plate for
covering or closing the end of a pipe. A flange joint is a connection of pipes,
where the connecting pieces have flanges by which the parts are bolted
together.
There are many different flange standards to be found worldwide. To allow
easy functionality and interchangeability, these are designed to have
standardised dimensions. Common world standards include ASA ANSI
ASME (USA), DIN (European), B10$ (British-Australian), and JIS.KS
(Japanese Korean).
In most cases these are not interchangeable. Further, many of the flanges in
each standard are divided into “pressure classes”, allowing flanges to be
capable of taking different pressure ratings. Again these are not generally
interchangeable. The flange faces are also made to standardized dimensions
and are typically “FLAT FACE”, “RAISED FACE”, “RING TYPE JOINT
(RTJ)”, “TONGUE AND GROOVE” styles, although other obscure styles are
possible.
Flange designs are available as “weld neck”, “slip-on”, “lap joint”, “socket
weld”, “threaded”, “blind”, “orifice” and also “spectacle”