1. Equal tee in pipe fitting 2. Tees (straight, reducing) NPS 1/4" - 4" 3. Standard:ASTM B363 ASME B16.9 4. Completed ... , Carbonization, Refrigeration, Light Industry, Salt Industry, Electric Power,etc.2. Standard: ASTM B363, ASME B16.9,ASME SB363,ANSI B16.9 ...