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1. Ready translated GB standards  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
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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 35211-2017 Measurement of nature gas calorific value—Continuous combustion 天然气发热量的测量 连续燃烧法 - 英文版 |
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GB/T 31253-2014 Natural gas―Validation for gaseous reference materials―Direct measurement of calorific value and density 天然气 气体标准物质的验证 发热量和密度直接测量法 - 英文版 |
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GB/T 18604-2014 Measurement of natural gas flow by gas ultrasonic flow meters 用气体超声流量计测量天然气流量 - 英文版 |
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GB/T 21446-2008 Measurement of natural gas flow by means of standard orifice meter 用标准孔板流量计测量天然气流量 - 英文版 |
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GB/T 21391-2008 Measurement of natural gas flow by turbine meters 用气体涡轮流量计测量天然气流量 - 英文版 |
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