This standard specifies the grade, size, shape, weight and allowable deviation, technical requirements, test methods, inspection rules, packaging, signs and quality certificates of carbon structural steel. This standard is applicable to hot-rolled steel plates, steel strips, section steels and steel bars generally used for welding, riveting and bolting engineering structures. This standard specifies the chemical composition and is also applicable to steel ingots, continuous casting slabs, billets and their products.
GB/T 700-2006 Referenced Document
GB/T 222-2006 Permissible tolerances for chemical composition of steel products
GB/T 223.10 Methods for chemical analysis of iron,steel and alloy The cupferron separation-chrome azurol S photometric method for the determination of aluminium content
GB/T 223.11 Determination of chromium content in iron, steel and alloy by visual titration or potentiometric titration*, 2009-05-01 Update
GB/T 223.18 Methods for chemical analysis of iron steel and alloy.The sodium thiosulfate separation iodimetric method for the determination of cupper content
GB/T 223.3 Methods for chemical analysis of iron, steel and alloy--The diantipyrylmethane phosphomolybdate gravimetric method for the determination of phosphorus content