Nace Rp0472 Pdf ((free)) Jun 2026

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| Standard | Focus | Environment | Action | | :--- | :--- | :--- | :--- | | | Material selection (base metals & castings) | Upstream & Downstream | Prescribes allowable alloys & hardness limits. | | RP0472 | Fabrication (welding & repair) | Primarily Refining | Prescribes welding methods, PWHT, and hardness testing. | nace rp0472 pdf