What is the maximum diameter of hot rolled round steel in Nangang?

Hot rolled ribbed bar 50㎜, nominal cross-sectional area 1964㎜? , the theoretical bulk density is15.42kg/m.

Hot rolled round steel bar is 22㎜, with a nominal cross-sectional area of 380. 1㎜? The theoretical bulk density is 2.98kg/m.

See GB 1499.2-2007 for details.

GB 1499. 1-2008