For further improvement of products safety performance, ZOZEN strictly carries out the hydraulic pressure and air pressure test on each boiler before delivery, which are also important parts for customers on-site inspection and acceptance. The air pressure test for boilers is a test to check the tightness of the furnace wall after the hydraulic pressure test. The air pressure test for boilers is a test to check the tightness of the furnace wall after the hydrau...
