General specification for steel

Steel specifications should be set out in the import and export trade contracts. Standard grades should be included (type code), the bar nominal diameter, nominal weight (mass), regulation length and the tolerance values of indicators, such as the. Our standard recommended nominal diameter 6, 8, 10, 12, 16, 20, 25, 32, 40, 50mm steel series. Delivery length and two kinds of double length of fixed length. Export rebar to length selected in the range of 6~12m, Japan produced rebar to length selection for 3.5~10m; domestic domestic rebar do not specify if the contract requirement, usually scale to 9m, 12m two lengths.