PPH儲罐在有很多方麵性能優於在同等應用條件下用（yòng）其他材質製做的儲罐（guàn），在自然條件下的使用壽命更長。有很多優（yōu）點，在（zài）應（yīng）用（yòng）之前，請仔細檢查（chá）PPH儲罐。

第一，PPH儲罐（guàn）在應用前要做（zuò）好外觀檢查，其表麵應無裂紋、縮（suō）孔、夾渣、折疊、重皮等缺陷。腐蝕深度和（hé）凹陷機械損傷深度不得超過（guò）相應產品標準允許的負壁厚偏（piān）差。

第（dì）二，PPH罐閥的殼（ké）體試驗壓力必須在公稱（chēng）壓力的1.5倍以下，試驗（yàn）時間必（bì）須在5min以下，以沒有殼體填充（chōng）劑泄漏為合格，密封（fēng）試驗以公稱壓力進行，閥（fá）密封麵沒有泄漏為合格。

第三，機械設備運輸有毒（dú）液體、有害液體、易燃液（yè）體管（guǎn）道閘閥，分別（bié）設計方法論工作壓力（lì）太大於1MPa，設（shè）計方法論溫度小於-29C或大於186C不易燃（rán）液體，進行了（le）有毒液（yè）體管道閘閥（fá）殼體工作壓試驗和密封試驗。

第四，請通過觀察pph儲存罐外螺紋突麵，再加精度和表（biǎo）麵粗糙度（dù）應合乎（hū）設計構思（sī）規定或規範（fàn），並應有商品分（fèn）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.