现在PPR水管的熔焊器制作合格的不多，因为一是缺少部件；二是生产厂家为了节省材料，一些厂家的底座采用很薄的白铁皮，造成上重下轻而不稳。操作时，往往需要另一个工人帮助稳住。
At present， there are few qualified welding tools for PPR water pipes because of the lack of parts; Second， in order to s***e materials， some manufacturers use very thin sheet iron for the base，PVC水管电话， which makes the top he***y and the bottom light and unstable. When operating，宁德PVC水管， it often needs another worker to help stabilize.
In addition to the wall thickness， we can also distinguish from the color marking on the outer wall of PPR pipe. Color marking is also called coextrusion. The PPR hot water pipe is marked with red color marking， the PPR cold water pipe is marked with blue color marking， and there are also manufacturers who do not need any color marking for PPR cold water pipe.
什么是低温脆性？低温脆性是指材料的冲击吸收功随温度降低而降低，当试验温度低于Tk(韧脆临界转变温度)时，冲击吸收功明显下降，材料由韧性状态变为脆性状态，PVC水管品牌，这种现象称为低温脆性。
What is low temperature brittleness? Low temperature brittleness means that the impact absorbed energy of material decreases with the decrease of temperature. When the test temperature is lower than TK (critical transition temperature of toughness and brittleness)， the impact absorbed energy decreases clears， and the material changes from ductile state to brittle state. This phenomenon is called low temperature brittleness.
宁德PVC水管-Gafloon卡弗龙-PVC水管品牌由台州艾菲力塑胶有限公司提供。台州艾菲力塑胶有限公司是浙江 台州 ,塑料管的见证者，多年来，公司贯彻执行科学管理、创新发展、诚实守信的方针，满足客户需求。在艾菲力塑胶***携全体员工热情欢迎各界人士垂询洽谈，共创艾菲力塑胶更加美好的未来。同时本公司还是从事PPR管，地暖管，PVC管的厂家，欢迎来电咨询。