ASME Standard Flanges

ASME has been defining piping safety since 1922.ASME flanges are widely used to ensure the safe operation of pipelines. In order to better understand ASME flanges, let’s first take a look at ASME.

What is ASME?

ASME Flange is an abbreviation of the American Society of Mechanical Engineers, a non-profit and private organization created for bringing uniformity in voluntary standards used in engineering and industrial disciplines.


ASME stands for American Society of Mechanical Engineers and serves as the leading international developer of standards and codes used to regulate the mechanical engineering industry. It is a private organization dedicated to promoting art, science, and multidisciplinary engineering, and encouraging collaboration across engineering disciplines. ASME is involved in various periodicals and industry publications, conferences, and professional development and education courses.

Founded in 1880 as the American Society of Mechanical Engineers, ASME is now a professional organization with 120,000 members in 151 countries, focusing on technology, education, training, and research in the engineering sciences and technological community. ASME sets internationally recognized codes and standards that increase security.

ASME (Boiler and Pressure Vessel) Pipe Code regulates the requirements for steam and heating boilers, pipes, pressure vessels, fittings, and nuclear components for the American and Canadian markets. The code ranges from the regulation of manufacturer certification, quality assurance, design, material selection, manufacturing, testing, testing, acceptance to certification. Around 120 countries worldwide have now joined this set of rules. When it comes to selling flange and other pipe products on international markets, companies cannot avoid this set of rules.

Within the industrial heating industry specifically, the ASME code – also referred to as ASME Boiler & Pressure Vessel Code – is the established standard that regulates the design, development, and manufacturing of boilers utilized in a variety of industries.

ASME Standard Flanges

ASME/ANSI B16.5 flanges

ASME Standard Flanges refers to a series of specifications for the production of flange products based on ASME Boiler and Pressure Vessel Code and ASME Pipe Codes, by specifying the flange size, surface conditions of the flange joint faces, sealing surface shape, pressure/temperature relationships, marking and the technical delivery conditions of materials, which ensure the quality and safety of flanges and other pipeline products. ASME standard focuses on flange measurement, working pressure, and tolerance, which means the high performance of global engineering components and is widely recognized by many countries around the world.

ASME standard flanges are referred to as the flanges are governed by ASME standards, which classify the different flanges according to the relationships between obtaining a curve in its material by the effect of exposure to given pressure and temperature. Based on this standard, the ASME flange classes are 75, 150, 300, 600, 900, 1500, 2500. Flanges according to ASME B16.5 or ASME B16.47 standards are normally made from forging with machined faces.

ASME Pipe Flanges Application Industries

ASME Pipe Flanges Application Industries

ASME standard pipe flanges widely used in many industries for waterworks and municipal pipe systems, heating systems and heat exchangers, plumbing and mechanical systems, fire protection services, and other valves, vessels, and industrial pumps around the world:

  • Chemical, Oil & Glass assemblies
  • Petrochemicals
  • Pulp and paper
  • Mining industry
  • Plants and the nuclear power industry
  • Construction
  • Water Treatment
  • Food processing and manufacturing

Customized ASME Standard Flange producing including designing, boring, drilling (smooth or with thread), blasting, coating, and marking for all requirements according to customer specifications.
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