Butt-welded fittings are used in a piping system for changing direction,branching and to mechanically joined to the system. A piping system using Butt-welded fittings has many inherent advantages over other forms. Butt-welded fittings are used widely in high pressure and high temperature application.
Material specification is totally in compliance with ASTM A 234. This standard covers wrought carbon steel fittings of seamless and welded construction which are manufactured to the dimensional specifications of ASME B16.9. These fittings are primarily for use in pressure piping and in pressure vessel fabrication for service at moderate and elevated temperatures. The starting material for fittings consist of killed (deoxidized) steel, forgings, bars, plates; seamless or fusion-welded tubular products with filler metal added and conform to the Mechanical & Chemical requirements of ASTM A 234.
Butt-welded fittings are manufactured in accordance with this specification conforms to the dimensions and tolerances given in the latest revision of ASME B16.9 & B16.28.z
Features and Applications:-
The Butt weld fittings are designed to be welded on site to connect pipes together and become part of a system for transporting fluids (oil, gas, steam, chemicals etc.) in a safe and efficient manner, over short or long distances. Depending on size, butt weld fittings require 10% to 75% less material than a flanged connection, which means lower material cost and lower weight. Welded construction permits greater freedom in designing a layout; this system uses less space, is more compact, and has greater strength. Butt weld fittings provide optimum flow characteristics, without pockets or sharp corners, creating less frictional resistance, no pressure loss, less turbulence.