Specification standards ANSI B16.9; JIS B2311/2312/2313; DIN 2605/2615/2616/2617;GB13401/12459 Material 304/304l , 316/316l , 321 , 31803 , 317l Thickness SCH10S, SCH20, STD, SCH40, XS, SCH80, XXS, SCH160 etc. Size concentric reducer 3/4"x1/2"~48"x40" Eccentric reducer 3/4"x1/2"~48"x40" Wood case