GB/T 13298 Inspection methods of microstructure for metals
GB/T 1499.2 Steel for the reinforcement of concrete—Part 2:Hot rolled ribbed bars
GB/T 2101 General requirment of acceptance, packaging, marking and certification for section steel
GB/T 222 Permissible tolerances for chemical composition of steel products
GB/T 223.11 Determination of chromium content in iron, steel and alloy by visual titration or potentiometric titration
GB/T 223.5 Steel and iron.Determination of acid-soluble silicon and total silicon content.Reduced molybdosilicate spectrophotometric method
GB/T 4336 Determination of multi-element content in carbon steel and medium and low alloy steel Spark discharge atomic emission spectrometry (conventional method) Amendment No. 1
GB/T 6394 Determination of estimating the average grain size of metal
YB/T 081 Rule for rounding off of numberical values and judgement of testing values for technical standards of metallurgy
GB/T 1499.2-2018 history
2018GB/T 1499.2-2018 Steel for the reinforcement of concrete—Part 2:Hot rolled ribbed bars
2007GB/T 1499.2-2007 Steel for the reinforcement of concrete - Part 2: Hot rolled bars
1998GB 1499-1998 Hot rolled ribbed steel bars for the reinforcement of concrete
1991GB 1499-1991 Hot rolled ribbed steel bars for the reinforcement of concrete