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See Chinese contents: NB/T 47018.1-2017 NB/T 47018.1-2017: Technical permission of welding materials for pressure equipment. Section 1: General rule
This Part of NB/T 47018-2017 specifies the basic procurement requirements, batch marking, batching rules, quality certification, re-inspection, storage and transportation of the welding materials. This Part is applicable to both the supplier and the purchaser of welding materials for pressure equipment; and the procurement rules are compiled in accordance with the procurement requirements.
