1, Products: 45 LR/SR, 90 LR/SR, 180 LR/SR gost elbow 2, Seam & Seamless 3, Painted: black, varnish, antirust oil 1 ... Deg. SR Elbows, 180 Deg. LR Elbow,gost elbow180 Deg. SR Elbow, 45 Deg. LR Elbow, 45 Deg. SR Elbow 2, Thickness: SCH20, SGP, STD, SCH40 ... 2617 III JIS B2311 JIS B2312 JIS B2313 CS GOST ELBOW