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Wallchart of Tool and Steel Micro-organizational Gold Rating Standard 5
Wallchart of Tool and Steel Micro-organization Gold Rating Standard 5
1 Alloy tool steel microorganization rating (GB/T1299-2000)
Jollion Organisation
Net carbon level
2 High-speed tool steel large-scale carbide rating (GB/T9943-2008)
Level I chart: Tungsten is a large agular carbon grade of high-speed steel tools
Level 2: Molybdenum high-speed instrument wire large particles carbon grade
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