本文介绍了液化石油气汽车罐车安全阀的特点与要求，着重讨论了下导式弹簧安全阀的设计、制造和调试。
The article introduces the characteristic and demand of LPG carrier tanker safety valve, and discusses emphatically the design, making and debug for lead-down spring safety valve and its structure.
本文介绍了液化石油气汽车罐车由于使用过程中造成凹陷缺陷的修理程序、方法、修理后的检验、试验过程。
This paper introduced the repair procedure , method, inspection and test of liquefied petroleum gas ank truck with the defect of hollow .
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