Butt Weld Concentric Reducer Size: 1/8"NB TO 48"NB Butt Weld Concentric Reducer Schedule : SCH10, SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS Butt Weld Concentric Reducer Type : Seamless / ERW / Welded Butt Weld Concentric Reducer Form: Concentric Reducer Butt Weld Concentric Reducer Grades : Stainless Steel Concentric Reducer ASTM A403 WP Gr. 304, 304H, 309, 310, 316, 316L, 317L, 321, 347, 904L Carbon Steel Concentric Reducer ASTM A 234 WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70. Low Temperature Carbon Steel Concentric Reducer ASTM A420 WPL3 / A420WPL6 Alloy Steel Concentric Reducer ASTM / ASME A/SA 234 Gr.WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91 Duplex Steel Concentric Reducer - ASTM A 815 UNS NO S 31803, S 32205.