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"Guide to Welding Procedure and Welder Qualification as per ASME Section IX"

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"Learn the essentials of welding procedures and welder qualifications according to ASME Sec. IX for effective pressure vessel fabrication."   This blog is written to serve as an introduction to ASME Sec. IX. For any details, the code should be referred to Sec. IX of the ASME Code specifies the rules for the preparation of welding procedure specifications and the qualification of welding procedures, welders, and welding operators. This code specifies the rules for all manual and machine welding processes. In the first part of this article, we will see how a welding procedure is to be written and qualified and in the second part, we will see how the welders are qualified. Throughout this article, only shielded metal arc welding (Manual Arc Welding) and Gas Tungsten Arc Welding (TIG Welding) will be considered.  Before we proceed, we shall see how the materials and the filler metal (electrodes and filler wires) are grouped in this code.   MATERIALS   All the mat...