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DL/T 679-2012 English PDF (DLT679-2012)

DL/T 679-2012 English PDF (DLT679-2012)

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DL/T 679-2012: Code for welder technical qualification
This standard stipulates the welder and #39;s technical qualification methods in the production, installation, maintenance and transformation of power generation and power supply equipment in the power industry. This standard applies to the welding methods such as shielded metal arc welding (SMAW), tungsten inert gas welding (TIG), melting electrode (solid and flux cored) gas metal arc welding (GMAW, FCAW), oxygen fuel gas welding (OFW), submerged arc welding (SAW), etc.

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