用J422GM(E4303);船用结构钢.普低钢的焊接.
J501Fe15(E5024), 普通船用A,D级钢的焊接.
J503Z(E5001), 碳素钢.普低钢的焊接
顶一下
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(0)
0%
踩一下
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(0)
0%