PPR配件图片-Gafloon-浙江PPR配件

正确的法兰连接操作应按如下步骤进行：

①在小型采暖系统中，可以采用螺纹连接的法兰。

②法兰连接前，应先检查两个法兰是否平行（法兰平行度偏差≯法兰外径的1.5%）和法兰连接面是否清洁。在检查两个法兰螺栓孔同心度时，若螺栓无法穿过，应进行铰孔（而不是扩孔），或者重新调整法兰。

③法兰连接时，应采用同一规格的螺栓；螺栓的垫片只能使用一片；螺栓的插入方向应一致。

④拧紧螺栓应按对称的顺序或十字法顺序，分几次拧紧。紧固后伸出螺母的螺栓长度一般不宜超过螺距的2倍。

PPR管施工后须经试压验收后方能封管和使用。PPR管安装主要采用热熔管件，PPR配件图片，熔接时间和压力不好掌握，工艺随机性较大，PPR配件，在热熔推接过程中易产生堆料从而减小通径，并使熔接处成为不规则的缺陷区，产生应力集中，PPR配件加盟，影响PPR管价格的长期性能；对于PPR管的电熔连接，由于电熔丝主要采用促进PPR降解的铜，会加速PPR管的老化。

PPR pipe can be sealed and used only after pressure test and acceptance.The PPR pipe is mainly installed with hot-melt pipe fittings. The welding time and pressure are not well mastered， and the process is random. In the process of hot melt push welding， it is easy to generate stacking materials to reduce the diameter， and make the fusion joint become an irregular defect area， which produces stress concentration， which affects the long-term energy of price of PPR pipe; For the electric melting connection of PPR pipe， the aging of PPR pipe will be accelerated because copper is mainly used to promote the degradation of PPR.

相对于其他PP管材，PP-R管材的突出优点是既改善了PP-H的低温脆性，浙江PPR配件，又在较高温度下(60℃)具有良好的耐长期水压能力，特别是用于热水管使 用时，长期强度均较PP-H和PP-B好。

Compared with other PP pipes， the outstanding advantage of PP-R pipe is that it not only improves the low temperature brittleness of pp-h， but also has good long-term water pressure resistance at higher temperature (60 ℃). Especially when it is used for hot water pipe， the long-term strength is better than pp-h and pp-b.