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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 3849.1-2015 |
Hardmetals—Rockwell hardness test(scale A)—Part 1: Test method 硬质合金 洛氏硬度试验（A标尺）第1部分：试验方法 |
China National Standards Hardmetals Rockwell hardness |
 English PDF |
| GB/T 3849.2-2010 |
Hardmetals - Rockwell hardness test (scale A) - Part 2: Preparation and calibration of standard test blocks 硬质合金 洛氏硬度试验（A标尺） 第2部分：标准试块的制备和校准 |
China National Standards Hardmetals Rockwell hardness |
English PDF |
| GB/T 3849-1983 |
Hardmetals--Rockwell hardness (scaleA) test method 硬质合金洛氏硬度 (A标尺) 试验方法 |
China National Standards Hardmetals Rockwell hardness |
English PDF |
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