stud-bolt 是螺栓 A193就是标准代号 是美国标准制表示的材料标准代号 GR是 等级的意思 B7就是螺栓的具体等级 W/ 其中W是with 就是和 NUTS是螺母 整体就是表示 A193等级为B7美标的螺栓和A194等级为2H美标的螺母
stud-bolt A193 GR B7 W/A194 GR 2H NUTS 最好具体点
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