... -DN4 Features:1) Standard: ANSI / ASTM B16.5, ANSI / ASTM B16.47 SERIES A (MSS SP - 44), ANSI / ASTM B16.47 SERIES B (API ... 605), ASTM B16.36, BS10 - 1962, BS4504, DIN, JIS B2220, UNI standard 2) Material: ASTM A 105, RST 37.2 ... , C22.8, ASTM A182, F304, F316, F316L, F321 and other ...