ASTM A490M-09 最小拉伸强度为150千磅-平方英寸热处理钢结构螺栓
肉的英语怎么读Designation:A 490M –09Standard Specification forHigh-Strength Steel Bolts,Class 10.9and 10.9.3,for Structural Steel Joints (Metric)1This standard is issued under the fixed designation A 490M;th
时间:2023-07-26 热度:45℃