PPH储罐在有很多方面性能优于在同等应用条件下用其他材质制做的储罐，在自然条件下的使用寿命更长。有很多优点，在应用之前，请仔细检查PPH储罐。

第一，PPH储罐在应用前要做好外观检查，其表面应无裂纹、缩孔、夹渣、折叠、重皮等缺陷。腐蚀深度和凹陷机械损伤深度不得超过相应产品标准允许的负壁厚偏差。

第二，PPH罐阀的壳体试验压力必须在公称压力的1.5倍以下，试验时间必须在5min以下，以没有壳体填充剂泄漏为合格，密封试验以公称压力进行，阀密封面没有泄漏为合格。

第三，机械设备运输有毒液体、有害液体、易燃液体管道闸阀，分别设计方法论工作压力太大于1MPa，设计方法论温度小于-29C或大于186C不易燃液体，进行了有毒液体管道闸阀壳体工作压试验和密封试验。

第四，请通过观察pph储存罐外螺纹突面，再加精度和表面粗糙度应合乎设计构思规定或规范，并应有商品分辨。

The service life of PPH storage tank is longer than that of other storage tanks under the same natural conditions. There are many advantages. Please carefully check the PPH tank before application.

First, the appearance of PPH storage tank shall be inspected before application, and its surface shall be free of cracks, shrinkage cavities, slag inclusion, folding, double skin and other defects. The corrosion depth and mechanical damage depth of depression shall not exceed the negative wall thickness deviation allowed by the corresponding product standards.

Second, the shell test pressure of PPH tank valve must be less than 1.5 times of the nominal pressure, and the test time must be less than 5min. It is qualified if there is no leakage of shell filler. The sealing test is conducted at the nominal pressure and there is no leakage on the valve sealing surface.

Third, for the mechanical equipment transporting toxic liquid, harmful liquid and flammable liquid pipeline gate valve, the working pressure of the design methodology is too greater than 1MPa, and the temperature of the design methodology is less than - 29c or greater than 186c. The working pressure test and sealing test of the shell of the toxic liquid pipeline gate valve are carried out.

Fourth, please observe the protruding surface of the external thread of the PPH storage tank. In addition, the accuracy and surface roughness should meet the design concept or specifications, and there should be commodity discrimination.