瑞士奧林康OERLIKONFLUXOFIL碳鋼焊絲 焊接材料倉庫視頻 說明:R717是低氫鈉型藥皮的含Cr9%-Mo1%-Ni0.8%-V的貝氏體-馬氏體耐熱鋼焊條,直流反接,短弧操作,可進(jìn)行...
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