elbow Materials: 304, 304L, 316, 316L, 321, 2520 etc Size: 15- ... : Stainless steel, carbon steel, alloy steel etc. 3. OD: From 1/2" to 48". 4. Thickness: Std, XS, XXS, Sch10, Sch20, Sch30, Sch40, Sch60 ... , Sch80, Sch160 etc. Our advantage: 1. Competitive price. Sound quality 2. Short delivery time, long quality guarantee validity elbow