1)Standard:ASME,AISI,JIS,DIN,GB,BS (2)Size:seamless fittings,1/2"--24"(DN15--DN600);welded ... ) elbow s'features:(1)Standard:ASME,AISI,JIS,DIN,GB,BS(2)Size:seamless fittings,1/2"--24"(DN15--DN600);welded ... , chemical industry, electric power,Shipping Industry and other pipe projects steel Equal Elbow