... .Stainless Steel Elbow 2.Size: 1/2"-72" 3.Wall Thickness: SCH20,STD,SCH40,SCH80,SCH160, 4.Standard: ANSI,ASME,ASTM ... ,JIS,DIN Stainless Steel Pipe Fittings1. Elbow(Radius:LR,SR;Degree:45D,90D,180D ... )2. Standard: ANSI B16.9 / 16.28, ASTM ... ,321,321H,316,316L,317,317L Stainless Steel Elbow