China National Standards

China Gears chemical etching GB Standards List

  •  China "Gears chemical etching" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 17879-2023 Gears - chemical etching test for surface tempering after grinding {译}
    齿轮 磨削后表面回火的化学浸蚀检验    		 China National Standards
    Gears chemical etching
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