Casing expansion is made up of body tube, telescopic tube, pressure and composition of the seal ring. Casing expansion pipe is mainly used for water supply and drainage engineering, it is urban tap tap, pump room water meter and valve installation conversion provides a great convenience. Casing expansion can also solve the problem of long from pipe temperature difference caused by the expansion, had good filling effect.
The heat pipe expansion http://www.yalishiyan.cn/Products-detail.asp? Cpid = 103