China Top drive drilling e GB Standards Search Result |
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1. Ready translated GB standards ![]() 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 . |
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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 - 英文版 |
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GB/T 31049-2014 Top drive drilling equipment for oil drilling rigs 石油钻机顶部驱动钻井装置 - 英文版 |
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