依据标准GB/T 228.1-2010中的要求,对牌号级别为Q690的20mm的试样进行屈服强度、抗拉强度、断后伸长率、断面收缩率和弹性模量的检验,试样数量16支。
According to the requirements of GB / T 228.1-2010, the yield strength, tensile strength, elongation after fracture, reduction of area and elastic modulus of 20mm samples with grade Q690 are tested. The number of samples is 16.