What is a butt weld pipe fitting?


A butt weld pipe fitting is designed to be welded on site at its end(s) to connect pipe(s) together and allow change in direction or pipe diameter, or branching or ending.


This fitting then becomes part of a system for transporting fluids (oil, gas, steam, chemicals …) in a safe and efficient manner, over short or long distances. Other types of fittings can be threaded or socket welded.


Who decides on standards and specifications for butt weld fittings?


Manufacturers of butt weld pipe fittings have to meet specifications and requirements of many organizations, to assure quality, compatibility and performance of their products.


Key national and international standards organizations focus on materials and end-user industries, including American Society for Testing and Materials (ASTM), American Society of Mechanical Engineers (ASME), International Organization for Standardization (ISO), Norway’s NORSOK, etc. Some international organizations also focus on quality standards across all industries, such as International Organization for Standardization (ISO).


Large industrial end-users also have their own programs to certify individual manufacturing plants as meeting their criteria to be listed on their Approved Manufacturers List (AML). All these certifications and approvals are valid for a specific period, and must be renewed regularly.


Butt weld fittings are used in the most demanding applications: oil & gas, nuclear, chemicals. They look like a simple product, but many things can go wrong during design and manufacturing, causing problems later in the field: scratched inner surface, thinner wall at outside radius, oval fittings, out-of-specs welding-end finish, invisible cracks, wrong chemical composition of steel grade, etc. So, need experienced and highly skilled manufacturer to produce and ensure the highest quality.


Wellgrow Industries Corp. is the expert of manufacturing butt weld fittings. If you are interested or need further details about butt weld fitting series, welcome to check out Wellgrow’s website! Feel free to contact with them for more products information.


Article Source: http://ezeflow.com/buttweld-pipe-fittings-faqs/