Size: 1/8" NBTO48"NB Types: Slip On , Socket Weld , Blind , Lapped , Screwed , Weld Neck , Reducing , Spectacle ,slip On Boss , Plate , Plate Blank , Screwed Boss. Class: 150#, 300#, 600#, 900#, 1500# 2500# Carbon Steel Standard ASTM A 105, ASTM A 181 Grade F304, 304L, 304H, 316, 316L, 36Ti, 310, 310S, 321, 321H, 317, 347, 347H Stainless Steel Alloy Steel Stainless Steel ASTM 182, A240 Alloy Steel ASTM / ASME A 182 GR F 5, F 9 , F 11 , F 12 , F 22 , F 91. Nickel Alloy Copper Alloy Nickel Alloy Monel 400 500, Inconel 600 625, Incolloy 800, 825, Hastalloy 904 Copper Alloy Aluminium, Copper, brass Gunmetal