Type: welding neck flange, slip on flange, lap joint flange, thread flange, slip on flange, blind flange 1. Type: welding neck flange, slip on flange, lap joint flange, thread flange, slip on flange, blind flange2. Material: carbon steel, ... stainless steel and alloy steel flange3.Standard: ANSI, JIS, BS, DIN,UNI, EN, GB, AWWA, API ...