One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 231
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Fill-in-the-blank: In pressure pipelines, （ ） is commonly used as the material for the valve stems and valve cores of carbon steel and chromium-molybdenum steel valves; the two most common grades are （ ） and （ ）. Marshall-type stainless steel, 1Cr13, 3Cr13
In pressure pipelines, (martensitic stainless steel) is commonly used as the material for the valve stems and valve cores of carbon steel and chromium-molybdenum steel valves; the two most common grades are (1Cr13), (2Cr13) and (3Cr13). ).
Stainless steel 304 316L
In pressure pipelines, (martensitic stainless steel) is commonly used as the material for the stem and disc of carbon steel and chromium-molybdenum steel valves; the two most common grades are (1Cr13) and (2Cr13).
Q235A 1cr13 2Cr13
1Cr13, 2Cr13
In pressure pipelines, (martensitic stainless steel) is commonly used as the material for the stem and disc of carbon steel and chromium-molybdenum steel valves; the two most common grades are (1Cr13) and (2Cr13).
Stainless steel: 1Cr13, 3Cr13. Well, it’s hard to type these characters, so that’s it
Answer: Maraging stainless steel, 1Cr13, 3Cr13
In pressure pipelines, (martensitic stainless steel) is commonly used as the material for the stem and disc of carbon steel and chromium-molybdenum steel valves; the two most common grades are (1Cr13) and (2Cr13).
In pressure pipelines, (martensitic stainless steel) is commonly used as the material for the stem and disc of carbon steel and chromium-molybdenum steel valves, with the common grades being (1Cr13, 2Cr13, and 3Cr13).