国家标准螺纹钢规格表(2)国家标准螺纹钢规格表规格理论质量规格理论质量规格理论质量规格理论质量mmkg/mmmkg/mmmkg/mmmkg/m5.50.184212.72409.869555.660.222222.984210.910061.76.50.260233.264512.51056870.302243.554814.211074.680.395253.855015.411581.590.499264.175317.312088.8100.617274.495518.612596.3110.746284.835619.3130104...