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Last updateFri, 18 Aug 2017 1pm

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ASTM A890

materials_q_and_a_graphicQ: Our piping specification requires that duplex stainless-steel castings be supplied per ASTM A890. A valve company took exception, and indicated that duplex valve bodies and bonnets would be supplied per ASTM A995. What is the difference between these specifications?


PMI Analysis

materials_q_and_a_graphicQ: Why does the valve supplier refuse to accept my claim that its material is out of specification based on my PMI analysis?

NACE MR0175

materials_q_and_a_graphicQ: I've heard there are major changes to the 2003 revision of NACE MR0175. Why was the standard changed so dramatically and how will the changes affect valves?

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