几十年来，美国国家标准学会设计的ANSI法兰已经为石油和天然气工业提供了壹种适用的密封技术，而且卓有成效。
For decades, American national standards institute ANSI flange design has been for the oil and gas industry is provided one of the sealing technology, and effectiveness.
这个标准涵盖塑料美国锥管螺纹(NPT)的尺寸和计量方法，用于泄漏密封连接，现在已在所有有关塑料管道产品的ASTM标准中引用。
The standard covers dimensions and gaging of plastic tapered National Pipe Threads (NPT) for leak-tight joints, and it is now referenced in all ASTM Standards for plastic piping products.
几十年来，美国国家标准学会设计的ANSI法兰已经为石油和天然气工业提供了一种适用的密封技术，而且卓有成效。
For decades, the American National Standards Institute ANSI flange design for the oil and gas industry provides a seal applied technology, and effective.
高防伪标签必须贴在美国的约束所有的密封必须达到或超过当前的考绩标准17712的高安全标准，所有已加载的密封容器。
A high security seal must be affixed to all loaded containers bound for the U. s. all seals must meet or exceed the current PAS ISO 17712 standards for high security seals.
高防伪标签必须贴在美国的约束所有的密封必须达到或超过当前的考绩标准17712的高安全标准，所有已加载的密封容器。
A high security seal must be affixed to all loaded containers bound for the U. s. all seals must meet or exceed the current PAS ISO 17712 standards for high security seals.
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