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凯斯ER90-S气保焊丝氩弧焊丝/气保焊丝化学成份
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20CrMo气保焊丝氩弧焊丝●化学成份:碳C:0.17~0.24硅Si:0.17~0.37锰Mn:0.40~0.70硫S:答应残余含量≤0.035磷P:答应残余含量≤0.035铬Cr:0.80~1.1


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