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NORSOK STANDARD
This standard covers technical requirements for welding and weld inspection of piping systems, for which NORSOK L-CR-001, «Piping and Valves» is the governing design standard . This standard is based on ASME B31.3 in general and as an option to use EN 288 for welding procedure qualifications and EN 287 for welder qualifications in particular. The
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