... ASME ,API 5L , DIN , JIS ,BS ,GB Materials carbon steel , alloy steel , stainless steel Type elbow series , flange,series tee series ,reducer series ... .stainless steel series . radius of curvature 1D--10D ANSI , ASME , API ... ,gas,power,construction,etc Company name XI'AN LINKUN MATERIALS (STEEL PIPE SUPPLIES) CO.,LTDMain products : C.S seamless & ...