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insulation core drilling machine
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... test of plane type parts also. Standard: ISO 6508-2: 2015 Metallic materials – Rockwell hardness test – Part 2: Verification and calibration of ...
2024-12-09 20:11:25
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...Rockwell hardness of steel pipe, pressure vessel, drill stem and other cylinder type parts, may determine the Rockwell hardness test of plane type ...
2024-12-09 20:11:25
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...drill pipe, etc., may determine the hardness of other cylinder type and plane type parts also. Standard: GB/T 231.2-2012 Metallic materials - ...
2024-12-09 20:11:25
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