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2. Electric resistance welding - Wikipedia

   en.wikipedia.org/wiki/Electric_resistance_welding

   Electric resistance welding (ERW) is a welding process in which metal parts in contact are permanently joined by heating them with an electric current, melting the metal at the joint. [1] Electric resistance welding is widely used, for example, in manufacture of steel pipe and in assembly of bodies for automobiles. [2]

3. Low-frequency electric resistance weld - Wikipedia

   en.wikipedia.org/wiki/Low-frequency_electric...

   Low-frequency electric resistance weld, LF-ERW is Electric resistance welded (ERW) pipe manufactured by cold-forming a sheet of steel into a cylindrical shape. Current is then passed between the two edges of the steel to heat the steel to a point at which the edges are forced together to form a bond without the use of welding filler material.

4. Electrofusion welding - Wikipedia

   en.wikipedia.org/wiki/Electrofusion_Welding

   It is most commonly used to join polyethylene (PE) and polypropylene (PP) pipes. Electrofusion welding is the most common welding technique for joining PE pipes. [1] Because of the consistency of the electrofusion welding process in creating strong joints, it is commonly employed for the construction and repair of gas-carrying pipelines. [2]

5. ASTM A53 steel - Wikipedia

   en.wikipedia.org/wiki/ASTM_A53_steel

   It is suitable for welding, and suitable for forming operations involving coiling, bending, and flanging. 3. Types and Grades This specification covers the following types and grades: 3.1 Type F—Furnace-butt-welded, continuous welded Grades A and B. 3.2 Type E—Electric-resistance-welded, Grades A and B, 3.3 Type S—Seamless, Grades A and B.

6. List of welding processes - Wikipedia

   en.wikipedia.org/wiki/List_of_welding_processes

   Pipe, railroad rails (limited) Resistance welding. Overview article: electric resistance welding. Name N AWS Characteristics Applications Resistance spot welding: 21:

7. Pipe (fluid conveyance) - Wikipedia

   en.wikipedia.org/wiki/Pipe_(fluid_conveyance)

   Advances since the 1970s, in materials, process control, and non-destructive testing, allow correctly specified welded pipe to replace seamless in many applications. Welded pipe is formed by rolling plate and welding the seam (usually by Electric resistance welding ("ERW"), or Electric Fusion Welding ("EFW")). The weld flash can be removed from ...