China Top drive drilling e 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 31049-2022 Oil and Gas Drilling Equipment Top drive drilling equipment 石油天然气钻采设备顶部驱动钻井装置 - 中英文版
	GB/T 31049-2014 Top drive drilling equipment for oil drilling rigs 石油钻机顶部驱动钻井装置 - 中英文版

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