Nitrogen filling and pressure maintaining：makes refrigeration copper pipes more outstanding

充氮保压，是每一个制冷人耳熟能详的词语，它是制冷铜管安装维护过程中必不可少的一个重要环节。

而在宏泰R410A冷媒专用铜管（盘管系列）的生产过程中，也有一道充氮保压的特殊工序，作为铜管高品质制造中至关重要的一环，它究竟扮演了什么样的角色呢？

Nitrogen filling and pressure maintaining is a word familiar to every refrigeration person. It is an indispensable and important link in the installation and maintenance process of refrigeration copper pipes.

In the production process of Hongtai R410A refrigerant special copper tubes (coil series), there is also a special process of nitrogen filling and pressure maintaining. As a vital link in the high-quality manufacturing of copper tubes, what role does it play?

一  防止铜管内壁氧化 Prevent oxidation of the inner wall of copper pipes  

由于氮气在常温下难以跟其他物质发生化学反应，将氮气作为保护气体填充铜管内部，可以隔绝空气，防止铜管内壁暴露于空气中而逐渐氧化，从而延长宏泰R410A冷媒专用铜管的储存期，提升铜管使用体验。

Since nitrogen is difficult to chemically react with other substances at room temperature, filling the inside of the copper tube with nitrogen as a protective gas can isolate the air and prevent the inner wall of the copper tube from being exposed to the air and gradually oxidizing, thus extending the storage period of Hongtai R410A special copper tube for refrigerant , improve the experience of using copper pipes.

二  保持清洁，减轻施工负担 Keep clean and reduce construction burden

宏泰R410A冷媒专用铜管在进行充氮保压后封堵铜管两端管口，可以将外界灰尘、杂质隔绝于外，以防内部遭受污染，从而减轻安装施工过程中的负担。

Hongtai R410A refrigerant special copper pipe seals the openings at both ends of the copper pipe after filling with nitrogen and maintaining pressure, which can isolate external dust and impurities from the outside to prevent internal contamination, thus reducing the burden during installation and construction.

三  检测管壁漏点 Detect pipe wall leakage points

在经过充氮保压之后，可以通过检测管内压力再次排查铜管漏点，进一步保证出厂的每一盘R410A冷媒专用铜管的品质。

After filling with nitrogen and maintaining pressure, the leakage point of the copper pipe can be checked again by detecting the pressure inside the pipe, further ensure the quality of each R410A refrigerant-specific copper pipes shipped from the factory.

四  施工更放心 Construction more assured

在施工过程中，焊接时是需要使用氮气保护以防内壁氧化的。但实际上，有的安装公司会为了节约成本而省去充氮环节，影响内壁清洁度；而经过充氮保压的宏泰R410A冷媒专用盘管可以减少焊接时的充氮时间，减少焊接成本，在一定程度上解决这一问题。

During the construction process, nitrogen protection is required during welding to prevent oxidation of the inner wall. But in fact, some installation companies will omit the nitrogen filling in order to save costs, which affects the cleanliness of the inner wall; Hongtai R410A refrigerant special coil that has been filled with nitrogen and pressure-maintained can reduce the nitrogen filling time during welding and reduce welding costs,solve this problem to a certain extent.