Electric Fusion Welded Pipe

A672 electric fusion welded efw steel pipe american piping products stocks a672 efw pipe in the grades and classes listed on the following tables.

Electric fusion welded pipe.

Electric fusion welding efw steel pipe refers to an electron beam welding the use of high speed movement of the electron beam directed impact kinetic energy is converted to heat the workpiece so that the workpiece leaving the melt the formation of the weld. Efw pipe vs ssaw pipe. Electric resistance welding erw is a welding process where metal parts in contact are permanently joined by heating them with an electric current melting the metal at the joint. Fusion welded method of new polyethylene pipe.

The efw pipe divison consists of a jco forming press helical spiral mill inside and outside welding system heat treatment furnace and testing facilities. Plate specification pipe grade type of steel astm specification no. Efw electric fusion welding steel pipe refers to an electron beam welding the use of high speed movement of the electron beam directed impact kinetic energy is converted to heat the workpiece so that the workpiece leaving the melt the formation of the weld. Electrofusion is an electrical fusion process by which an external sleeve fitting incorporating an element is installed to poly pipe or fittings and with application of electrical current they are welded to each other.

Welding process employed is gtaw for root pass and saw tig for final pass with suitable filler wires as prescribed by aws specifications and asme. It is mainly used for welding dissimilar steel welding sheet or which high power density metal weldment can. Pipe steel black and hot dipped zinc coated welded and seamless electric fusion welded steel pipe for high pressure service at moderate temperatures. Wall thicknesses are mainly sch 40 std and sch 80 xs.

Efw steel pipe is formed by rolling plate and welding the seam. Efw pipe vs erw pipe. Efw is the abbreviation of electric fusion welding. The weld of the high quality erw welded pipe can reach the same level of toughness as the base metal which cannot be achieved by the submerged arc welding process.

Grade a 45 plain carbon a285 a285m a a50 plain carbon a285 a285m b a 55 plain carbon a285. Efw pipe vs erw pipe. One of the two most used steel pipe material for welding bending and coiling. Electric fusion welding efw steel pipe refers to an electron beam welding the use of high speed movement of the electron beam directed impact kinetic energy is converted to heat the workpiece so that the workpiece leaving the melt the formation of the weld.

Electric resistance welding is widely used for example in manufacture of steel pipe and in assembly of bodies for automobiles. Prefabricated fittings are used incorporating an electrical heating coil which melts the plastic of both the fitting and the pipe causing them to fuse together. The weld flash can be removed from the outside or inside surfaces.