angle-bulb 球缘角钢

angle bulb-iron 球头角钢

bulb angle-bar 球缘角钢

bulb angle section 圆头角材 ; 球缘型材

bulb angle bar 圆头角料 ; 圆边角型铁料

bulb angle 球缘角材 ; [材] 圆头角钢