China Fastening screw thre GB Standards Search Result

and Chinese version GB Standards, you can purchase directly in the web page; After receive your payment, we will send the GB Standards PDF file to your Email within 1~3 days.
2. Other English version GB Standards are not ready translated, only after get your order, then we translate them, time usually need 3-5 days .


	GB/T 39641-2020 Methods for gaging Fastening screw threads by thread indicating gages 螺纹指示量规检测紧固螺纹方法 - 中英文版
	GB/T 37050-2019 Fastening screw thread gaging systems for acceptability 紧固螺纹检测体系 - 中英文版

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