Does not have cold shortness, the shape and the size thermostability very is also good, the service life may for 50 years.
无冷脆性，形状和尺寸的热稳定性也很好，使用寿命可以长达50年。
Long service life: at rated temperature and pressure conditions, PE tube can be safely used for more than 50 years.
长久的使用寿命：在额定温度、压力状况下，PE管道可安全使用50年以上。
On the basis of a high standard on the water quality and water treatment, a service life of 30-50 years is anticipated for the whole central heating system.
在北欧国家，由于供暖的水质和水处理有很高的标准，整个集中供暖系统的使用寿命都可预期在50年。
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