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  Welding is a process of joining two base metals by heating it. It can be done with or without additional filler metal being used. Below are the few types of welding process : 1)Shield Metal Arc Welding, 2) Metal Inert Gas Welding 3) Tungsten Inert Gas Welding 4) Oxygen fuel gas welding 5) Friction Stir Welding (no filler metal required) 6) Electric Resistance Welding (no filler metal required) and few more…. For welding with additional filler wires, care should be taken that the selected filler wire or electrode is compatible for the metal being joined. Collect the Material Test Certificate of the material . Batch test certificate of the filler wire and verify the values. First step is to check the chemical composition of filler wire. The minimum required chemical content should be present and maximum allowed chemicals should be restricted in the filler wire. If Carbon Equivalent value is restricted for the base metal then check the carbon equivalent value of t...

Welder Certificate is a document that shows ability of a welder to make a quality weld in a particular welding process. The Certificate also denotes on which type of welding material and which position the welder is able to perform. A full penetration weld can be performed by welder who is qualified for full penetration & fillet. A welder qualified by vertical position (3G) can perform Flat and vertical in production and so on. These qualification ranges are mentioned in the certificates after referring the applicable codes and standards. Welders are qualified for different process individually. Welding process: Shielded Metal Arc Welding (SMAW)- Arc Welding Tungsten Inert Gas Welding (TIG/GTAW)- Arc Welding Metal Inert Gas Welding (MIG)- Arc Metal Active Gas welding (MAG)- Arc Flux Cores Arc Welding (FCAW)- Arc Electric Resistance welding (ERW) and Lot more.. Welding Qualification standards are given in AWS D 1.1 – Structural Welding ...