Metal Fitting
Metal fitting is normally brass material with nickel plated.  Brass color is available. It is widely be used in high temperature and high pressure where plastic fitting isn’t competent. Like G thread, PT thread, inch NPT thread are optional. There are many types. For instance, straight, bulkhead, reducer, elbow, Long socket elbow, Branch Y, Branch T and Branch double etc. Delicate appearance, wide range of applications.