I --Beam 1) Size: 10# - 63# , 100mm to 900mm 2) Grade: ... 3) Standard:GB/T11263 One kind of profile bars with "I" shape section, the specification is usually expressed by web height ... (h)* flange width (b)* web thickness (d). I --Beam1) Size: 10# - 63# , 100mm to 900mm 2) Grade: Q235 ...