... : ANSI 150lbs-2500lbs. 3.Carbon steel materials,ASTM A105, ST37.2,C22.8,Q235 1. Type: welding neck flange2. Material: carbon steel, stainless steel and ... alloy steel flange3. Standard: ANSI, JIS, BS, DIN, UNI, EN, GB, AWWA, API ... Ton/month12. Payment terms: T/T .L/C at sight ANSI b16.5 WN flange