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| SY/T 675 4-2009 SY/T 675 4-2009 General requirements and testing method of echo bullet for oil and gas well (English Version) |
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Detail of SY/T 675 4-2009
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Introduction of SY/T 675 4-2009
本标准规定了油气井用回声弹的技术要求、检测方法、检验规则、运输和储存。本标准适用于回声弹的制造、验收和性能检测。
Contents of SY/T 675 4-2009