This annealing oxide layer on DI pipe and fittings, much like the patina on copper, is so thin it’s hardly measurable nevertheless serves to avoid further pitting or degradation on the metal in normal ambient situations. There exists an in depth array of pipe fittings �?elbows, tees and minimizing pieces https://www.facebook.com/permalink.php?story_fbid=pfbid02bWZZp6hfaiyiKeQ1PtMXodEwM1QuUU28Fo6Wj8XS41YUaBSmujBUShhXH3U8xYcal&id=61560512640678&__cft__[0]=AZXxKXI9uOSzE8Zr9OpjD4CH6WH3E9kjFcHe9YaDRFRb8QUtJAk3HVaRj6V8ia1OgA7KWdbjzTbf5Bfi9_HNaX0AvL6TcVF2IPnbpYvB5JVp2eIhm1kZA5RMipvQpAQ8Y3ceh5e6Cjf65I2TJyhhejLffG-sWR3APSs-H0_gr1tMpH4Lox3l7nRxKbfUzMNhXSWbuxHhvDVKntg9T7oHjRSw&__tn__=%2CO%2CP-R