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D1.8 Seismic Supplement Welding Manual
Appendix C:
Alternative To Production
Lot Testing
As an alternative to certification by test of every production lot made, D1.8 allows an alternative means for a manufacturer to demonstrate that products are manufactured consistently and capable of achieving the required weld metal mechanical properties. This includes certification of three lots for each product, as described in Appendix A, in addition to the certification of a manufacturer’s production processes to recognized quality management standards.
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