MS18308, MILITARY STANDARD: ALLOY STEEL SOCKET WELDING FLANGES AND FLANGED NIPPLES, 1/4 INCH AND 3/8 INCH, 600 POUNDS PER SQUARE INCH AT 850 DEG. F (MAXIMUM) (18 JUN 1976)

MS18308, MILITARY STANDARD: ALLOY STEEL SOCKET WELDING FLANGES AND FLANGED NIPPLES, 1/4 INCH AND 3/8 INCH, 600 POUNDS PER SQUARE INCH AT 850 DEG. F (MAXIMUM) (18 JUN 1976).