length

weight

cross-section

weight per unit length

carbon and silicon

manganese and phosphorous

carbon and manganese

carbon and sulfur

12 m and 12 m

12 m and 13 m

13 m and 12 m

13 m and 13 m

only (i)

(i)and(ii)

(ii) and (iii)

(i) and (iii)

height

foot width

head width

any of the above