1. carbon steel straight tee 2. size:1/2"-48" 3. Standard : ASTM, GB,JIN ... : 1) Carbon steel fitting and stainless steel fitting 2) Standard: ASME, ANSI, API, JIS,Features:1 ... ) Carbon steel fitting and stainless steel fitting 2) Standard: ASME, ANSI, API, JIS, DIN 3 ... 321H ,20#, 4) Size: 1/2" - 24"5) Production with anneal solution for stainless performance carbon steel material equal tee